Attachment 189146 Details for Bug 224625 – build log of poudriere on 11.1-RELEASE amd64

build log of poudriere on 11.1-RELEASE amd64

ruby25-bdb-0.6.6_5.log (text/plain), 251.66 KB, created by Yasuhiro Kimura on 2017-12-27 23:41:45 UTC

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Creator: Yasuhiro Kimura

Created: 2017-12-27 23:41:45 UTC

Size: 251.66 KB

patch

obsolete

>build started at Thu Dec 28 08:27:38 JST 2017
>port directory: /usr/ports/databases/ruby-bdb
>package name: ruby25-bdb-0.6.6_5
>building for: FreeBSD 111amd64-original 11.1-RELEASE-p6 FreeBSD 11.1-RELEASE-p6 amd64
>maintained by: knu@FreeBSD.org
>Makefile ident:      $FreeBSD: head/databases/ruby-bdb/Makefile 431392 2017-01-13 14:44:55Z sunpoet $
>Poudriere version: 3.2.3
>Host OSVERSION: 1101001
>Jail OSVERSION: 1101001
>Job Id: 
>
>---Begin Environment---
>SHELL=/bin/csh
>OSVERSION=1101001
>UNAME_v=FreeBSD 11.1-RELEASE-p6
>UNAME_r=11.1-RELEASE-p6
>BLOCKSIZE=K
>MAIL=/var/mail/root
>STATUS=1
>SAVED_TERM=screen
>NO_WARNING_PKG_INSTALL_EOL=yes
>MASTERMNT=/usr/local/poudriere/data/.m/111amd64-original/ref
>HTTP_PROXY=http://proxy.home.utahime.org:8080/
>UID=0
>PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/sbin:/usr/local/bin:/root/bin
>POUDRIERE_BUILD_TYPE=bulk
>OLDPWD=/usr/local/poudriere/data/.m/111amd64-original/ref/.p/pool
>P_PORTS_FEATURES=FLAVORS SELECTED_OPTIONS
>PWD=/usr/local/poudriere/data/.m/111amd64-original/ref/.p
>MASTERNAME=111amd64-original
>SCRIPTPREFIX=/usr/local/share/poudriere
>USER=root
>HOME=/root
>P_PYTHON_MAJOR_VER=2
>POUDRIERE_VERSION=3.2.3
>SCRIPTPATH=/usr/local/share/poudriere/testport.sh
>GID=0
>TRYBROKEN=yes
>LIBEXECPREFIX=/usr/local/libexec/poudriere
>LOCALBASE=/usr/local
>FTP_PROXY=http://proxy.home.utahime.org:8080/
>POUDRIEREPATH=/usr/local/bin/poudriere
>---End Environment---
>
>---Begin Poudriere Port Flags/Env---
>PORT_FLAGS=
>PKGENV=PACKAGES=/tmp/pkgs PKGREPOSITORY=/tmp/pkgs
>FLAVOR=
>DEPENDS_ARGS=
>MAKE_ARGS=
>---End Poudriere Port Flags/Env---
>
>---Begin OPTIONS List---
>===> The following configuration options are available for ruby25-bdb-0.6.6_5:
>     DOCS=on: Build and/or install documentation
>     EXAMPLES=on: Build and/or install examples
>===> Use 'make config' to modify these settings
>---End OPTIONS List---
>
>--MAINTAINER--
>knu@FreeBSD.org
>--End MAINTAINER--
>
>--CONFIGURE_ARGS--
>--with-db-include=/usr/local/include/db5  --with-db-lib=/usr/local/lib/db5 --with-opt-dir="/usr/local"
>--End CONFIGURE_ARGS--
>
>--CONFIGURE_ENV--
>RB_USER_INSTALL=yes XDG_DATA_HOME=/wrkdirs/usr/ports/databases/ruby-bdb/work  XDG_CONFIG_HOME=/wrkdirs/usr/ports/databases/ruby-bdb/work  HOME=/wrkdirs/usr/ports/databases/ruby-bdb/work TMPDIR="/tmp" PATH=/wrkdirs/usr/ports/databases/ruby-bdb/work/.bin:/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/sbin:/usr/local/bin:/root/bin SHELL=/bin/sh CONFIG_SHELL=/bin/sh
>--End CONFIGURE_ENV--
>
>--MAKE_ENV--
>RUBY_RDOC=/usr/local/bin/rdoc XDG_DATA_HOME=/wrkdirs/usr/ports/databases/ruby-bdb/work  XDG_CONFIG_HOME=/wrkdirs/usr/ports/databases/ruby-bdb/work  HOME=/wrkdirs/usr/ports/databases/ruby-bdb/work TMPDIR="/tmp" PATH=/wrkdirs/usr/ports/databases/ruby-bdb/work/.bin:/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/sbin:/usr/local/bin:/root/bin NO_PIE=yes MK_DEBUG_FILES=no MK_KERNEL_SYMBOLS=no SHELL=/bin/sh NO_LINT=YES PREFIX=/usr/local  LOCALBASE=/usr/local  LIBDIR="/usr/lib"  CC="cc" CFLAGS="-O2 -pipe  -fstack-protector -fno-strict-aliasing"  CPP="cpp" CPPFLAGS=""  LDFLAGS=" -fstack-protector" LIBS=""  CXX="c++" CXXFLAGS="-O2 -pipe -fstack-protector -fno-strict-aliasing "  MANPREFIX="/usr/local" BSD_INSTALL_PROGRAM="install  -s -m 555"  BSD_INSTALL_LIB="install  -s -m 0644"  BSD_INSTALL_SCRIPT="install  -m 555"  BSD_INSTALL_DATA="install  -m 0644"  BSD_INSTALL_MAN="install  -m 444"
>--End MAKE_ENV--
>
>--PLIST_SUB--
>RUBY_LIBDIR="lib/ruby/2.5" RUBY_ARCHLIBDIR="lib/ruby/2.5/amd64-freebsd11" RUBY_SITELIBDIR="lib/ruby/site_ruby/2.5" RUBY_SITEARCHLIBDIR="lib/ruby/site_ruby/2.5/amd64-freebsd11" RUBY_VENDORLIBDIR="lib/ruby/vendor_ruby/2.5" RUBY_VENDORARCHLIBDIR="lib/ruby/vendor_ruby/2.5/amd64-freebsd11" RUBY_MODDOCDIR="share/doc/ruby25/bdb" RUBY_MODEXAMPLESDIR="share/examples/ruby25/bdb" RUBY_DOCDIR="share/doc/ruby25" RUBY_EXAMPLESDIR="share/examples/ruby25" RUBY_RIDIR="share/ri/2.5/system" RUBY_SITERIDIR="share/ri/2.5/site"  RUBY_VERSION="2.5.0"  RUBY_VER="2.5"  RUBY_SHLIBVER="25"  RUBY_ARCH="amd64-freebsd11"  RUBY_SUFFIX="25"  RUBY_NAME="ruby25"  RUBY_DEFAULT_SUFFIX="25"  RUBY22="@comment "  RUBY23="@comment "  RUBY24="@comment "  RUBY25="" OSREL=11.1 PREFIX=%D LOCALBASE=/usr/local  RESETPREFIX=/usr/local PORTDOCS="" PORTEXAMPLES="" LIB32DIR=lib DOCSDIR="share/doc/ruby25/bdb"  EXAMPLESDIR="share/examples/ruby25/bdb"  DATADIR="share/bdb"  WWWDIR="www/bdb"  ETCDIR="etc/bdb"
>--End PLIST_SUB--
>
>--SUB_LIST--
>PREFIX=/usr/local LOCALBASE=/usr/local  DATADIR=/usr/local/share/bdb DOCSDIR=/usr/local/share/doc/ruby25/bdb EXAMPLESDIR=/usr/local/share/examples/ruby25/bdb  WWWDIR=/usr/local/www/bdb ETCDIR=/usr/local/etc/bdb
>--End SUB_LIST--
>
>---Begin make.conf---
>USE_PACKAGE_DEPENDS=yes
>BATCH=yes
>WRKDIRPREFIX=/wrkdirs
>PORTSDIR=/usr/ports
>PACKAGES=/packages
>DISTDIR=/distfiles
>FORCE_PACKAGE=yes
>PACKAGE_BUILDING=yes
>PACKAGE_BUILDING_FLAVORS=yes
>#### /usr/local/etc/poudriere.d/make.conf ####
># Setting for master sites
>MASTER_SORT=.jp
>
>DEFAULT_VERSIONS+=ruby=2.5
>#### /usr/ports/Mk/Scripts/ports_env.sh ####
>ARCH=amd64
>CONFIGURE_MAX_CMD_LEN=262144
>HAVE_COMPAT_IA32_KERN=YES
>OPSYS=FreeBSD
>OSREL=11.1
>OSVERSION=1101001
>PYTHONBASE=/usr/local
>_OSRELEASE=11.1-RELEASE-p6
>_SMP_CPUS=4
>#### Misc Poudriere ####
>---End make.conf---
>--Resource limits--
>cpu time               (seconds, -t)  unlimited
>file size           (512-blocks, -f)  unlimited
>data seg size           (kbytes, -d)  33554432
>stack size              (kbytes, -s)  524288
>core file size      (512-blocks, -c)  unlimited
>max memory size         (kbytes, -m)  unlimited
>locked memory           (kbytes, -l)  unlimited
>max user processes              (-u)  12056
>open files                      (-n)  1024
>virtual mem size        (kbytes, -v)  unlimited
>swap limit              (kbytes, -w)  unlimited
>socket buffer size       (bytes, -b)  unlimited
>pseudo-terminals                (-p)  unlimited
>kqueues                         (-k)  unlimited
>umtx shared locks               (-o)  unlimited
>--End resource limits--
>=======================<phase: check-sanity   >============================
>===>  License RUBY accepted by the user
>===========================================================================
>=======================<phase: pkg-depends    >============================
>===>   ruby25-bdb-0.6.6_5 depends on file: /usr/local/sbin/pkg - not found
>===>   Installing existing package /packages/All/pkg-1.10.3_1.txz
>[111amd64-original] Installing pkg-1.10.3_1...
>[111amd64-original] Extracting pkg-1.10.3_1: .......... done
>===>   ruby25-bdb-0.6.6_5 depends on file: /usr/local/sbin/pkg - found
>===>   Returning to build of ruby25-bdb-0.6.6_5
>===========================================================================
>=======================<phase: fetch-depends  >============================
>===========================================================================
>=======================<phase: fetch          >============================
>===>  License RUBY accepted by the user
>===>   ruby25-bdb-0.6.6_5 depends on file: /usr/local/sbin/pkg - found
>===> Fetching all distfiles required by ruby25-bdb-0.6.6_5 for building
>===========================================================================
>=======================<phase: checksum       >============================
>===>  License RUBY accepted by the user
>===>   ruby25-bdb-0.6.6_5 depends on file: /usr/local/sbin/pkg - found
>===> Fetching all distfiles required by ruby25-bdb-0.6.6_5 for building
>=> SHA256 Checksum OK for ruby/bdb-0.6.6.tar.bz2.
>===========================================================================
>=======================<phase: extract-depends>============================
>===>   ruby25-bdb-0.6.6_5 depends on file: /usr/local/bin/ruby25 - not found
>===>   Installing existing package /packages/All/ruby-2.5.0,1.txz
>[111amd64-original] Installing ruby-2.5.0,1...
>[111amd64-original] `-- Installing libedit-3.1.20170329_2,1...
>[111amd64-original] `-- Extracting libedit-3.1.20170329_2,1: .......... done
>[111amd64-original] `-- Installing libffi-3.2.1_2...
>[111amd64-original] |   `-- Installing indexinfo-0.3.1...
>[111amd64-original] |   `-- Extracting indexinfo-0.3.1: .... done
>[111amd64-original] `-- Extracting libffi-3.2.1_2: .......... done
>[111amd64-original] `-- Installing libunwind-20170113_1...
>[111amd64-original] `-- Extracting libunwind-20170113_1: .......... done
>[111amd64-original] `-- Installing libyaml-0.1.6_2...
>[111amd64-original] `-- Extracting libyaml-0.1.6_2: ......... done
>[111amd64-original] Extracting ruby-2.5.0,1: .......... done
>Message from ruby-2.5.0,1:
>
>====
>Some of the standard commands are provided as separate ports for ease
>of upgrading:
>
>	devel/ruby-gems:	gem - RubyGems package manager
>	devel/rubygem-rake:	rake - Ruby Make
>
>And some of the standard libraries are provided as separate ports
>since they require extra dependencies:
>
>	databases/ruby-gdbm:	GDBM module
>
>Install them as occasion demands.
>====
>===>   ruby25-bdb-0.6.6_5 depends on file: /usr/local/bin/ruby25 - found
>===>   Returning to build of ruby25-bdb-0.6.6_5
>===========================================================================
>=======================<phase: extract        >============================
>===>  License RUBY accepted by the user
>===>   ruby25-bdb-0.6.6_5 depends on file: /usr/local/sbin/pkg - found
>===> Fetching all distfiles required by ruby25-bdb-0.6.6_5 for building
>===>  Extracting for ruby25-bdb-0.6.6_5
>=> SHA256 Checksum OK for ruby/bdb-0.6.6.tar.bz2.
>===>   ruby25-bdb-0.6.6_5 depends on file: /usr/local/bin/ruby25 - found
>===========================================================================
>=======================<phase: patch-depends  >============================
>===>   ruby25-bdb-0.6.6_5 depends on file: /usr/local/bin/ruby25 - found
>===========================================================================
>=======================<phase: patch          >============================
>===>  Patching for ruby25-bdb-0.6.6_5
>===>   ruby25-bdb-0.6.6_5 depends on file: /usr/local/bin/ruby25 - found
>===>  Applying extra patch /usr/ports/databases/ruby-bdb/files/extra-patch-src-common.c-22
>===>  Applying extra patch /usr/ports/databases/ruby-bdb/files/extra-patch-src-recnum.c-22
>===>  Applying extra patch /usr/ports/databases/ruby-bdb/files/extra-patch-src-cursor.c-22
>===>  Applying FreeBSD patches for ruby25-bdb-0.6.6_5
>===========================================================================
>=======================<phase: build-depends  >============================
>===>   ruby25-bdb-0.6.6_5 depends on file: /usr/local/bin/ruby25 - found
>===========================================================================
>=======================<phase: lib-depends    >============================
>===>   ruby25-bdb-0.6.6_5 depends on shared library: libdb-5.3.so - not found
>===>   Installing existing package /packages/All/db5-5.3.28_6.txz
>[111amd64-original] Installing db5-5.3.28_6...
>[111amd64-original] Extracting db5-5.3.28_6: .......... done
>===>   ruby25-bdb-0.6.6_5 depends on shared library: libdb-5.3.so - found (/usr/local/lib/libdb-5.3.so)
>===>   Returning to build of ruby25-bdb-0.6.6_5
>===========================================================================
>=>> Recording filesystem state for prebuild... done
>=======================<phase: configure      >============================
>===>   ruby25-bdb-0.6.6_5 depends on file: /usr/local/bin/ruby25 - found
>===>   ruby25-bdb-0.6.6_5 depends on shared library: libdb-5.3.so - found (/usr/local/lib/libdb-5.3.so)
>===>  Configuring for ruby25-bdb-0.6.6_5
>===>  Running extconf.rb to configure
>extconf.rb: Entering directory `src'
>checking for db_version() in -ldb5... no
>checking for db_version_5000() in -ldb5... no
>checking for db_version() in -ldb... yes
>checking for ruby/io.h... yes
>checking for rb_frame_this_func() in ruby.h... yes
>checking for rb_block_proc() in ruby.h... yes
>checking for rb_io_stdio_file() in ruby.h... yes
>checking for rb_block_call() in ruby.h... yes
>checking for Array#insert... yes
>checking for Array#values_at... yes
>checking for rb_io_t in ruby.h,ruby/io.h... yes
>checking for DB_AFTER in db.h...yes
>checking for DB_AGGRESSIVE in db.h...yes
>checking for DB_APPEND in db.h...yes
>checking for DB_ARCH_ABS in db.h...yes
>checking for DB_ARCH_DATA in db.h...yes
>checking for DB_ARCH_LOG in db.h...yes
>checking for DB_AUTO_COMMIT in db.h...yes
>checking for DB_BEFORE in db.h...yes
>checking for DB_BTREE in db.h...yes
>checking for DB_CACHED_COUNTS in db.h...no
>checking for DB_CDB_ALLDB in db.h...yes
>checking for DB_CHECKPOINT in db.h...no
>checking for DB_CHKSUM in db.h...yes
>checking for DB_CHKSUM_SHA1 in db.h...no
>checking for DB_CLIENT in db.h...no
>checking for DB_CONFIG in db.h...no
>checking for DB_CONSUME in db.h...yes
>checking for DB_CONSUME_WAIT in db.h...yes
>checking for DB_CREATE in db.h...yes
>checking for DB_CURLSN in db.h...no
>checking for DB_CURRENT in db.h...yes
>checking for DB_DBT_MALLOC in db.h...yes
>checking for DB_DBT_PARTIAL in db.h...yes
>checking for DB_DBT_REALLOC in db.h...yes
>checking for DB_DBT_USERMEM in db.h...yes
>checking for DB_DIRECT_DB in db.h...yes
>checking for DB_DIRECT_LOG in db.h...no
>checking for DB_DIRTY_READ in db.h...yes
>checking for DB_DONOTINDEX in db.h...yes
>checking for DB_DSYNC_LOG in db.h...no
>checking for DB_DUP in db.h...yes
>checking for DB_DUPSORT in db.h...yes
>checking for DB_EID_BROADCAST in db.h...yes
>checking for DB_EID_INVALID in db.h...yes
>checking for DB_ENCRYPT in db.h...yes
>checking for DB_ENCRYPT_AES in db.h...yes
>checking for DB_ENV_THREAD in db.h...no
>checking for DB_EVENT_PANIC in db.h...yes
>checking for DB_EVENT_REP_CLIENT in db.h...yes
>checking for DB_EVENT_REP_ELECTED in db.h...yes
>checking for DB_EVENT_REP_MASTER in db.h...yes
>checking for DB_EVENT_REP_NEWMASTER in db.h...yes
>checking for DB_EVENT_REP_PERM_FAILED in db.h...yes
>checking for DB_EVENT_REP_STARTUPDONE in db.h...yes
>checking for DB_EVENT_WRITE_FAILED in db.h...yes
>checking for DB_EXCL in db.h...yes
>checking for DB_FAST_STAT in db.h...yes
>checking for DB_FIRST in db.h...yes
>checking for DB_FIXEDLEN in db.h...no
>checking for DB_FLUSH in db.h...yes
>checking for DB_FORCE in db.h...yes
>checking for DB_GET_BOTH_RANGE in db.h...yes
>checking for DB_GET_RECNO in db.h...yes
>checking for DB_GET_BOTH in db.h...yes
>checking for DB_HASH in db.h...yes
>checking for DB_HOME in db.h...no
>checking for DB_IGNORE_LEASE in db.h...yes
>checking for DB_INCOMPLETE in db.h...no
>checking for DB_INIT_CDB in db.h...yes
>checking for DB_INIT_LOCK in db.h...yes
>checking for DB_INIT_LOG in db.h...yes
>checking for DB_INIT_MPOOL in db.h...yes
>checking for DB_INIT_REP in db.h...yes
>checking for DB_INIT_TXN in db.h...yes
>checking for DB_JOINENV in db.h...yes
>checking for DB_JOIN_ITEM in db.h...yes
>checking for DB_JOIN_NOSORT in db.h...yes
>checking for DB_KEYEMPTY in db.h...yes
>checking for DB_KEYEXIST in db.h...yes
>checking for DB_KEYFIRST in db.h...yes
>checking for DB_KEYLAST in db.h...yes
>checking for DB_LAST in db.h...yes
>checking for DB_LOCKDOWN in db.h...yes
>checking for DB_LOCK_CONFLICT in db.h...no
>checking for DB_LOCK_DEADLOCK in db.h...yes
>checking for DB_LOCK_DEFAULT in db.h...yes
>checking for DB_LOCK_EXPIRE in db.h...yes
>checking for DB_LOCK_GET in db.h...yes
>checking for DB_LOCK_GET_TIMEOUT in db.h...yes
>checking for DB_LOCK_IREAD in db.h...yes
>checking for DB_LOCK_IWR in db.h...yes
>checking for DB_LOCK_IWRITE in db.h...yes
>checking for DB_LOCK_MAXLOCKS in db.h...yes
>checking for DB_LOCK_MINLOCKS in db.h...yes
>checking for DB_LOCK_MINWRITE in db.h...yes
>checking for DB_LOCK_NG in db.h...yes
>checking for DB_LOCK_NOTGRANTED in db.h...yes
>checking for DB_LOCK_NOTHELD in db.h...no
>checking for DB_LOCK_NOWAIT in db.h...yes
>checking for DB_LOCK_OLDEST in db.h...yes
>checking for DB_LOCK_PUT in db.h...yes
>checking for DB_LOCK_PUT_ALL in db.h...yes
>checking for DB_LOCK_PUT_OBJ in db.h...yes
>checking for DB_LOCK_RANDOM in db.h...yes
>checking for DB_LOCK_READ in db.h...yes
>checking for DB_LOCK_TIMEOUT in db.h...yes
>checking for DB_LOCK_WRITE in db.h...yes
>checking for DB_LOCK_YOUNGEST in db.h...yes
>checking for DB_LOG_AUTOREMOVE in db.h...no
>checking for DB_LOG_AUTO_REMOVE in db.h...yes
>checking for DB_LOG_DIRECT in db.h...yes
>checking for DB_LOG_DSYNC in db.h...yes
>checking for DB_LOG_INMEMORY in db.h...no
>checking for DB_LOG_IN_MEMORY in db.h...yes
>checking for DB_LOG_ZERO in db.h...yes
>checking for DB_MPOOL_CLEAN in db.h...no
>checking for DB_MPOOL_CREATE in db.h...yes
>checking for DB_MPOOL_DIRTY in db.h...yes
>checking for DB_MPOOL_DISCARD in db.h...yes
>checking for DB_MPOOL_LAST in db.h...yes
>checking for DB_MPOOL_NEW in db.h...yes
>checking for DB_MPOOL_PRIVATE in db.h...no
>checking for DB_MULTIVERSION in db.h...yes
>checking for DB_MUTEX_PROCESS_ONLY in db.h...yes
>checking for DB_NEXT_DUP in db.h...yes
>checking for DB_NEXT_NODUP in db.h...yes
>checking for DB_NODUPDATA in db.h...yes
>checking for DB_NOORDERCHK in db.h...yes
>checking for DB_NOSERVER in db.h...yes
>checking for DB_NOSERVER_HOME in db.h...no
>checking for DB_NOSERVER_ID in db.h...no
>checking for DB_NOTFOUND in db.h...yes
>checking for DB_OLD_VERSION in db.h...yes
>checking for DB_ORDERCHKONLY in db.h...yes
>checking for DB_OVERWRITE in db.h...yes
>checking for DB_POSITION in db.h...yes
>checking for DB_PRIVATE in db.h...yes
>checking for DB_SYSTEM_MEM in db.h...yes
>checking for DB_RMW in db.h...yes
>checking for DB_PAD in db.h...no
>checking for DB_PREV_DUP in db.h...yes
>checking for DB_PREV_NODUP in db.h...yes
>checking for DB_PRINTABLE in db.h...yes
>checking for DB_PRIORITY_DEFAULT in db.h...yes
>checking for DB_PRIORITY_HIGH in db.h...yes
>checking for DB_PRIORITY_LOW in db.h...yes
>checking for DB_PRIORITY_VERY_HIGH in db.h...yes
>checking for DB_QUEUE in db.h...yes
>checking for DB_RDONLY in db.h...yes
>checking for DB_READ_COMMITTED in db.h...yes
>checking for DB_READ_UNCOMMITTED in db.h...yes
>checking for DB_RECNO in db.h...yes
>checking for DB_RECNUM in db.h...yes
>checking for DB_RECORDCOUNT in db.h...no
>checking for DB_RECOVER in db.h...yes
>checking for DB_RECOVER_FATAL in db.h...yes
>checking for DB_REGION_INIT in db.h...yes
>checking for DB_RENUMBER in db.h...yes
>checking for DB_REPFLAGS_MASK in db.h...no
>checking for DB_REPMGR_ACKS_ALL in db.h...yes
>checking for DB_REPMGR_ACKS_ALL_PEERS in db.h...yes
>checking for DB_REPMGR_ACKS_NONE in db.h...yes
>checking for DB_REPMGR_ACKS_ONE in db.h...yes
>checking for DB_REPMGR_ACKS_ONE_PEER in db.h...yes
>checking for DB_REPMGR_ACKS_QUORUM in db.h...yes
>checking for DB_REPMGR_CONNECTED in db.h...yes
>checking for DB_REPMGR_DISCONNECTED in db.h...yes
>checking for DB_REPMGR_PEER in db.h...yes
>checking for DB_REP_ACK_TIMEOUT in db.h...yes
>checking for DB_REP_ANYWHERE in db.h...yes
>checking for DB_REP_BULKOVF in db.h...yes
>checking for DB_REP_CHECKPOINT_DELAY in db.h...yes
>checking for DB_REP_CLIENT in db.h...yes
>checking for DB_REP_CONF_BULK in db.h...yes
>checking for DB_REP_CONF_DELAYCLIENT in db.h...yes
>checking for DB_REP_CONF_NOAUTOINIT in db.h...no
>checking for DB_REP_CONF_NOWAIT in db.h...yes
>checking for DB_REP_CONNECTION_RETRY in db.h...yes
>checking for DB_REP_DEFAULT_PRIORITY in db.h...yes
>checking for DB_REP_DUPMASTER in db.h...yes
>checking for DB_REP_EGENCHG in db.h...no
>checking for DB_REP_ELECTION in db.h...yes
>checking for DB_REP_ELECTION_RETRY in db.h...yes
>checking for DB_REP_ELECTION_TIMEOUT in db.h...yes
>checking for DB_REP_FULL_ELECTION in db.h...no
>checking for DB_REP_FULL_ELECTION_TIMEOUT in db.h...yes
>checking for DB_REP_HANDLE_DEAD in db.h...yes
>checking for DB_REP_HOLDELECTION in db.h...yes
>checking for DB_REP_IGNORE in db.h...yes
>checking for DB_REP_ISPERM in db.h...yes
>checking for DB_REP_JOIN_FAILURE in db.h...yes
>checking for DB_REP_LEASE_EXPIRED in db.h...yes
>checking for DB_REP_LEASE_TIMEOUT in db.h...yes
>checking for DB_REP_LOCKOUT in db.h...yes
>checking for DB_REP_LOGREADY in db.h...yes
>checking for DB_REP_LOGSONLY in db.h...no
>checking for DB_REP_MASTER in db.h...yes
>checking for DB_REP_NEWMASTER in db.h...yes
>checking for DB_REP_NEWSITE in db.h...yes
>checking for DB_REP_NOBUFFER in db.h...yes
>checking for DB_REP_NOTPERM in db.h...yes
>checking for DB_REP_OUTDATED in db.h...no
>checking for DB_REP_PAGEDONE in db.h...yes
>checking for DB_REP_PERMANENT in db.h...yes
>checking for DB_REP_REREQUEST in db.h...yes
>checking for DB_REP_UNAVAIL in db.h...yes
>checking for DB_RPCCLIENT in db.h...no
>checking for DB_RUNRECOVERY in db.h...yes
>checking for DB_SALVAGE in db.h...yes
>checking for DB_SECONDARY_BAD in db.h...yes
>checking for DB_SET in db.h...yes
>checking for DB_SET_LOCK_TIMEOUT in db.h...yes
>checking for DB_SET_RANGE in db.h...yes
>checking for DB_SET_RECNO in db.h...yes
>checking for DB_SET_TXN_TIMEOUT in db.h...yes
>checking for DB_SNAPSHOT in db.h...yes
>checking for DB_STAT_ALL in db.h...yes
>checking for DB_STAT_CLEAR in db.h...yes
>checking for DB_STAT_SUBSYSTEM in db.h...yes
>checking for DB_THREAD in db.h...yes
>checking for DB_TRUNCATE in db.h...yes
>checking for DB_TXN_ABORT in db.h...yes
>checking for DB_TXN_APPLY in db.h...yes
>checking for DB_TXN_BACKWARD_ROLL in db.h...yes
>checking for DB_TXN_FORWARD_ROLL in db.h...yes
>checking for DB_TXN_NOSYNC in db.h...yes
>checking for DB_TXN_NOWAIT in db.h...yes
>checking for DB_TXN_PRINT in db.h...yes
>checking for DB_TXN_SNAPSHOT in db.h...yes
>checking for DB_TXN_SYNC in db.h...yes
>checking for DB_TXN_WRITE_NOSYNC in db.h...yes
>checking for DB_UNKNOWN in db.h...yes
>checking for DB_UPGRADE in db.h...yes
>checking for DB_USE_ENVIRON in db.h...yes
>checking for DB_USE_ENVIRON_ROOT in db.h...yes
>checking for DB_VERB_CHKPOINT in db.h...no
>checking for DB_VERB_DEADLOCK in db.h...yes
>checking for DB_VERB_RECOVERY in db.h...yes
>checking for DB_VERB_REPLICATION in db.h...yes
>checking for DB_VERB_WAITSFOR in db.h...yes
>checking for DB_VERIFY in db.h...yes
>checking for DB_PRIORITY_VERY_LOW in db.h...yes
>checking for DB_WRITECURSOR in db.h...yes
>checking for DB_XA_CREATE in db.h...yes
>checking for DB_XIDDATASIZE in db.h...no
>checking for DB_MULTIPLE_KEY in db.h...yes
>checking for DB_REP_CONF_LEASE in db.h...yes
>checking for DB_REP_HEARTBEAT_MONITOR in db.h...yes
>checking for DB_REP_HEARTBEAT_SEND in db.h...yes
>checking for DB_TXN_NOT_DURABLE in db.h...yes
>checking for DB_KEY_RANGE in db.h... yes
>checking for DB_INFO in db.h... no
>checking for DB_SEQUENCE in db.h... yes
>checking for DB_LOGC in db.h... yes
>checking for DBTYPE in db.h... yes
>checking for DB_COMPACT in db.h... yes
>checking for DB_HASH_STAT in db.h... yes
>checking for DB_HASH_STAT.hash_nkeys in db.h... yes
>checking for DB_HASH_STAT.hash_nrecs in db.h... no
>checking for DB_HASH_STAT.hash_ndata in db.h... yes
>checking for DB_HASH_STAT.hash_nelem in db.h... no
>checking for DB_HASH_STAT.hash_pagecnt in db.h... yes
>checking for DB_QUEUE_STAT in db.h... yes
>checking for DB_QUEUE_STAT.qs_nkeys in db.h... yes
>checking for DB_QUEUE_STAT.qs_nrecs in db.h... no
>checking for DB_QUEUE_STAT.qs_ndata in db.h... yes
>checking for DB_QUEUE_STAT.qs_start in db.h... no
>checking for DB_REP_STAT in db.h... yes
>checking for DB_REP_STAT.st_bulk_fills in db.h... yes
>checking for DB_REP_STAT.st_bulk_overflows in db.h... yes
>checking for DB_REP_STAT.st_bulk_records in db.h... yes
>checking for DB_REP_STAT.st_bulk_transfers in db.h... yes
>checking for DB_REP_STAT.st_client_rerequests in db.h... yes
>checking for DB_REP_STAT.st_client_svc_miss in db.h... yes
>checking for DB_REP_STAT.st_client_svc_req in db.h... yes
>checking for DB_REP_STAT.st_egen in db.h... yes
>checking for DB_REP_STAT.st_election_nvotes in db.h... yes
>checking for DB_REP_STAT.st_election_sec in db.h... yes
>checking for DB_REP_STAT.st_election_usec in db.h... yes
>checking for DB_REP_STAT.st_next_pg in db.h... yes
>checking for DB_REP_STAT.st_pg_duplicated in db.h... yes
>checking for DB_REP_STAT.st_pg_records in db.h... yes
>checking for DB_REP_STAT.st_pg_requested in db.h... yes
>checking for DB_REP_STAT.st_startup_complete in db.h... yes
>checking for DB_REP_STAT.st_waiting_pg in db.h... yes
>checking for DBC.c_close in db.h... yes
>checking for DBC.c_count in db.h... yes
>checking for DBC.c_del in db.h... yes
>checking for DBC.c_dup in db.h... yes
>checking for DBC.c_get in db.h... yes
>checking for DBC.c_pget in db.h... yes
>checking for DBC.c_put in db.h... yes
>checking for DBC.close in db.h... yes
>checking for DBC.count in db.h... yes
>checking for DBC.del in db.h... yes
>checking for DBC.dup in db.h... yes
>checking for DBC.get in db.h... yes
>checking for DBC.pget in db.h... yes
>checking for DBC.put in db.h... yes
>checking for DBC.get_priority in db.h... yes
>checking for DB.app_private in db.h... yes
>checking for DB.set_h_compare in db.h... yes
>checking for DB.set_append_recno in db.h... yes
>checking for DB.set_feedback in db.h... yes
>checking for DB.set_q_extendsize in db.h... no
>checking for DB.set_encrypt in db.h... yes
>checking for DB.set_errcall in db.h... yes
>checking for DB.get_type in db.h... yes
>checking for DB.pget in db.h... yes
>checking for DB.fd in db.h... yes
>checking for DB.set_priority in db.h... yes
>checking for DB.byteswapped in db.h... no
>checking for DB.get_bt_minkey in db.h... yes
>checking for DB.get_cachesize in db.h... yes
>checking for DB.get_dbname in db.h... yes
>checking for DB.get_env in db.h... yes
>checking for DB.get_h_ffactor in db.h... yes
>checking for DB.get_h_nelem in db.h... yes
>checking for DB.get_lorder in db.h... yes
>checking for DB.get_pagesize in db.h... yes
>checking for DB.get_q_extentsize in db.h... yes
>checking for DB.get_re_delim in db.h... yes
>checking for DB.get_re_len in db.h... yes
>checking for DB.get_re_pad in db.h... yes
>checking for DB.get_re_source in db.h... yes
>checking for DB.get_flags in db.h... yes
>checking for DB.get_open_flags in db.h... yes
>checking for DB.verify in db.h... yes
>checking for DB.truncate in db.h... yes
>checking for DB.upgrade in db.h... yes
>checking for DB.remove in db.h... yes
>checking for DB.rename in db.h... yes
>checking for DB.join in db.h... yes
>checking for DB.get_byteswapped in db.h... yes
>checking for DB.set_cache_priority in db.h... no
>checking for DB_GET_TYPE_2... yes
>checking for DB.open in db.h... yes
>checking for DB_OPEN_7... yes
>checking for DB.associate in db.h... yes
>checking for DB_ASSOCIATE_TXN... yes
>checking for DB_JOIN_FLAG_DBC... yes
>checking for DB_GET_BYTESWAPPED_2... yes
>checking for DB_ENV.get_cachesize in db.h... yes
>checking for DB_ENV.get_data_dirs in db.h... yes
>checking for DB_ENV.get_flags in db.h... yes
>checking for DB_ENV.get_home in db.h... yes
>checking for DB_ENV.get_lg_bsize in db.h... yes
>checking for DB_ENV.get_lg_dir in db.h... yes
>checking for DB_ENV.get_lg_max in db.h... yes
>checking for DB_ENV.get_lg_regionmax in db.h... yes
>checking for DB_ENV.get_lk_detect in db.h... yes
>checking for DB_ENV.get_lk_max_lockers in db.h... yes
>checking for DB_ENV.get_lk_max_locks in db.h... yes
>checking for DB_ENV.get_lk_max_objects in db.h... yes
>checking for DB_ENV.get_mp_mmapsize in db.h... yes
>checking for DB_ENV.get_open_flags in db.h... yes
>checking for DB_ENV.get_rep_limit in db.h... no
>checking for DB_ENV.get_rep_nsites in db.h... no
>checking for DB_ENV.get_shm_key in db.h... yes
>checking for DB_ENV.get_tas_spins in db.h... no
>checking for DB_ENV.get_tmp_dir in db.h... yes
>checking for DB_ENV.get_timeout in db.h... yes
>checking for DB_ENV.get_tx_max in db.h... yes
>checking for DB_ENV.get_tx_timestamp in db.h... yes
>checking for DB_ENV.rep_get_nsites in db.h... yes
>checking for DB_ENV.rep_get_priority in db.h... yes
>checking for DB_ENV.lg_info in db.h... no
>checking for DB_ENV.log_put in db.h... yes
>checking for DB_ENV.log_flush in db.h... yes
>checking for DB_ENV.log_cursor in db.h... yes
>checking for DB_ENV.log_file in db.h... yes
>checking for DB_ENV.log_flush in db.h... yes
>checking for DB_ENV.set_feedback in db.h... yes
>checking for DB_ENV.set_app_dispatch in db.h... yes
>checking for DB_ENV.set_rep_transport in db.h... no
>checking for DB_ENV.set_timeout in db.h... yes
>checking for DB_ENV.set_txn_timeout in db.h... no
>checking for DB_ENV.set_lock_timeout in db.h... no
>checking for DB_ENV.set_encrypt in db.h... yes
>checking for DB_ENV.set_rep_limit in db.h... no
>checking for DB_ENV.rep_elect in db.h... yes
>checking for DB_ENV.rep_start in db.h... yes
>checking for DB_ENV.rep_process_message in db.h... yes
>checking for DB_ENV.rep_set_limit in db.h... yes
>checking for DB_ENV.set_msgcall in db.h... yes
>checking for DB_ENV.set_thread_id in db.h... yes
>checking for DB_ENV.set_thread_id_string in db.h... yes
>checking for DB_ENV.set_isalive in db.h... yes
>checking for DB_ENV.set_shm_key in db.h... yes
>checking for DB_ENV.rep_set_nsites in db.h... yes
>checking for DB_ENV.rep_set_priority in db.h... yes
>checking for DB_ENV.rep_set_config in db.h... yes
>checking for DB_ENV.rep_set_timeout in db.h... yes
>checking for DB_ENV.rep_set_transport in db.h... yes
>checking for DB_ENV.repmgr_set_local_site in db.h... no
>checking for DB_ENV.repmgr_add_remote_site in db.h... no
>checking for DB_ENV.repmgr_set_ack_policy in db.h... yes
>checking for DB_ENV.repmgr_set_site_list in db.h... no
>checking for DB_ENV.repmgr_start in db.h... yes
>checking for DB_ENV.set_intermediate_dir_mode in db.h... yes
>checking for DB_ENV.set_event_notify in db.h... yes
>checking for DB_ENV.set_cachesize in db.h... yes
>checking for DB_ENV.set_region_init in db.h... no
>checking for DB_ENV.set_tas_spins in db.h... no
>checking for DB_ENV.set_tx_timestamp in db.h... yes
>checking for DB_ENV.db_verbose in db.h... no
>checking for DB_ENV.set_verbose in db.h... yes
>checking for DB_ENV.lk_detect in db.h... yes
>checking for DB_ENV.set_lk_detect in db.h... yes
>checking for DB_ENV.lk_max in db.h... yes
>checking for DB_ENV.set_lk_max in db.h... no
>checking for DB_ENV.lk_conflicts in db.h... yes
>checking for DB_ENV.set_lk_conflicts in db.h... yes
>checking for DB_ENV.set_timeout in db.h... yes
>checking for DB_ENV.set_lk_max_locks in db.h... yes
>checking for DB_ENV.set_lk_max_lockers in db.h... yes
>checking for DB_ENV.lg_max in db.h... no
>checking for DB_ENV.set_lk_max_objects in db.h... yes
>checking for DB_ENV.set_lg_bsize in db.h... yes
>checking for DB_ENV.set_data_dir in db.h... yes
>checking for DB_ENV.set_lg_dir in db.h... yes
>checking for DB_ENV.set_tmp_dir in db.h... yes
>checking for DB_ENV.set_server in db.h... no
>checking for DB_ENV.set_rpc_server in db.h... no
>checking for DB_ENV.set_flags in db.h... yes
>checking for DB_ENV.close in db.h... yes
>checking for DB_ENV.set_func_sleep in db.h... no
>checking for DB_ENV.set_func_yield in db.h... no
>checking for DB_ENV.set_alloc in db.h... yes
>checking for DB_ENV.set_errcall in db.h... yes
>checking for DB_ENV.lsn_reset in db.h... yes
>checking for DB_ENV.fileid_reset in db.h... yes
>checking for DB_ENV.failchk in db.h... yes
>checking for DB_ENV.rep_sync in db.h... yes
>checking for DB_ENV.rep_stat in db.h... yes
>checking for DB_ENV.log_set_config in db.h... yes
>checking for DB_ENV.fidp in db.h... no
>checking for DB_ENV.rep_set_clockskew in db.h... yes
>checking for DB_ENV.rep_set_request in db.h... yes
>checking for DB_ENV.open in db.h... yes
>checking for ENV_OPEN_DB_CONFIG... no
>checking for ENV_REMOVE_4... no
>checking for DB_ENV.log_stat in db.h... yes
>checking for DB_ENV.log_archive in db.h... yes
>checking for DB_ENV.log_register in db.h... no
>checking for DB_ENV.log_unregister in db.h... no
>checking for DB_CURSOR_4... yes
>checking for DB_ENV_REP_ELECT_7... no
>checking for DB_ENV_REP_ELECT_5... no
>checking for DB_ENV_REP_PROCESS_MESSAGE_5... yes
>checking for DB_LOG_STAT.st_refcnt in db.h... no
>checking for DB_LOG_STAT.st_lg_bsize in db.h... yes
>checking for DB_LOG_STAT.st_lg_size in db.h... yes
>checking for DB_LOG_STAT.st_lg_max in db.h... no
>checking for DB_LOG_STAT.st_wcount_fill in db.h... yes
>checking for DB_LOG_STAT.st_disk_file in db.h... yes
>checking for DB_LOG_STAT.st_disk_offset in db.h... yes
>checking for DB_LOG_STAT.st_flushcommit in db.h... no
>checking for DB_LOG_STAT.st_maxcommitperflush in db.h... yes
>checking for DB_LOG_STAT.st_mincommitperflush in db.h... yes
>checking for DB_BTREE_STAT.bt_nkeys in db.h... yes
>checking for DB_BTREE_STAT.bt_nrecs in db.h... no
>checking for DB_BTREE_STAT.bt_ndata in db.h... yes
>checking for DB_BTREE_STAT.bt_pagecnt in db.h... yes
>checking for DB_STAT_4... yes
>checking for DB_CURSOR_4... yes
>checking for DB_ENV.lock_id_free in db.h... yes
>checking for DB_ENV.lock_id in db.h... yes
>checking for DB_ENV.lk_info in db.h... no
>checking for DB_ENV.lock_detect in db.h... yes
>checking for DB_ENV.lock_stat in db.h... yes
>checking for DB_ENV.lock_get in db.h... yes
>checking for DB_ENV.lock_vec in db.h... yes
>checking for DB_ENV.lock_put in db.h... yes
>checking for DB_LOCK_STAT.st_id in db.h... yes
>checking for DB_LOCK_STAT.st_lastid in db.h... no
>checking for DB_LOCK_STAT.st_lock_nowait in db.h... yes
>checking for DB_LOCK_STAT.st_lock_wait in db.h... yes
>checking for DB_LOCK_STAT.st_nnowaits in db.h... no
>checking for DB_LOCK_STAT.st_nconflicts in db.h... no
>checking for DB_LOCK_STAT.st_objs_nowait in db.h... yes
>checking for DB_LOCK_STAT.st_objs_wait in db.h... yes
>checking for DB_LOCK_STAT.st_lockers_nowait in db.h... yes
>checking for DB_LOCK_STAT.st_lockers_wait in db.h... yes
>checking for DB_LOCK_STAT.st_locks_nowait in db.h... no
>checking for DB_LOCK_STAT.st_locks_wait in db.h... no
>checking for DB_LOCKREQ.timeout in db.h... yes
>checking for DB_TXN.abort in db.h... yes
>checking for DB_TXN.commit in db.h... yes
>checking for DB_TXN.id in db.h... yes
>checking for DB_TXN.prepare in db.h... yes
>checking for DB_TXN.discard in db.h... yes
>checking for DB_TXN.set_timeout in db.h... yes
>checking for DB_TXN.set_name in db.h... yes
>checking for DB_ENV.tx_info in db.h... no
>checking for DB_ENV.txn_begin in db.h... yes
>checking for DB_ENV.txn_checkpoint in db.h... yes
>checking for DB_ENV.txn_recover in db.h... yes
>checking for DB_ENV.txn_stat in db.h... yes
>checking for DB_ENV.dbremove in db.h... yes
>checking for DB_ENV.dbrename in db.h... yes
>checking for DB_ENV.set_tx_max in db.h... yes
>checking for DB_TXN_STAT.st_maxnactive in db.h... yes
>checking for DB_TXN_STAT.st_regsize in db.h... yes
>checking for DB_TXN_STAT.st_region_wait in db.h... yes
>checking for DB_TXN_STAT.st_region_nowait in db.h... yes
>checking for DB_TXN_STAT.st_last_ckp in db.h... yes
>checking for DB_TXN_STAT.st_pending_ckp in db.h... no
>checking for DB_TXN_STAT.st_nrestores in db.h... yes
>checking for DB_TXN_ACTIVE.tid in db.h... yes
>checking for DB_TXN_ACTIVE.name in db.h... yes
>checking for DB_TXN_ACTIVE.parentid in db.h... yes
>checking for ENV_REP_TRANSPORT_6... yes
>checking for DB_ENV_REP_PROCESS_MESSAGE_ENVID... /wrkdirs/usr/ports/databases/ruby-bdb/work/bdb-0.6.6/src/features.rb:882: warning: already initialized constant CONFTEST_C
>/wrkdirs/usr/ports/databases/ruby-bdb/work/bdb-0.6.6/src/features.rb:818: warning: previous definition of CONFTEST_C was here
>yes
>creating Makefile
>extconf.rb: Leaving directory `src'
>===========================================================================
>=======================<phase: build          >============================
>===>  Building for ruby25-bdb-0.6.6_5
>--- all ---
>--- docs/doc/index.html ---
>--- all ---
>--- bdb.o ---
>--- common.o ---
>--- cursor.o ---
>compiling bdb.c
>compiling common.c
>compiling cursor.c
>cursor.c:32:51: warning: 'rb_hash_ifnone' is deprecated [-Wdeprecated-declarations]
>        if ((g = rb_hash_aref(f, rb_intern("flags"))) != rb_hash_ifnone(f) ||
>                                                         ^
>/usr/local/include/ruby-2.5/ruby/backward.h:25:33: note: 'rb_hash_ifnone' has been explicitly marked deprecated here
>DECLARE_DEPRECATED_FEATURE(2.2, rb_hash_ifnone);
>                                ^
>cursor.c:32:66: error: too many arguments to function call, expected 0, have 1
>        if ((g = rb_hash_aref(f, rb_intern("flags"))) != rb_hash_ifnone(f) ||
>                                                         ~~~~~~~~~~~~~~ ^
>/usr/local/include/ruby-2.5/ruby/backward.h:25:1: note: 'rb_hash_ifnone' declared here
>DECLARE_DEPRECATED_FEATURE(2.2, rb_hash_ifnone);
>^
>/usr/local/include/ruby-2.5/ruby/backward.h:13:5: note: expanded from macro 'DECLARE_DEPRECATED_FEATURE'
>    NORETURN(ERRORFUNC(("deprecated since "#ver), DEPRECATED(void func(void))))
>    ^
>/usr/local/include/ruby-2.5//amd64-freebsd11/ruby/config.h:123:21: note: expanded from macro 'NORETURN'
>#define NORETURN(x) __attribute__ ((__noreturn__)) x
>                    ^
>cursor.c:33:53: warning: 'rb_hash_ifnone' is deprecated [-Wdeprecated-declarations]
>            (g = rb_hash_aref(f, rb_str_new2("flags"))) != rb_hash_ifnone(f)) {
>                                                           ^
>/usr/local/include/ruby-2.5/ruby/backward.h:25:33: note: 'rb_hash_ifnone' has been explicitly marked deprecated here
>DECLARE_DEPRECATED_FEATURE(2.2, rb_hash_ifnone);
>                                ^
>cursor.c:33:68: error: too many arguments to function call, expected 0, have 1
>            (g = rb_hash_aref(f, rb_str_new2("flags"))) != rb_hash_ifnone(f)) {
>                                                           ~~~~~~~~~~~~~~ ^
>/usr/local/include/ruby-2.5/ruby/backward.h:25:1: note: 'rb_hash_ifnone' declared here
>DECLARE_DEPRECATED_FEATURE(2.2, rb_hash_ifnone);
>^
>/usr/local/include/ruby-2.5/ruby/backward.h:13:5: note: expanded from macro 'DECLARE_DEPRECATED_FEATURE'
>    NORETURN(ERRORFUNC(("deprecated since "#ver), DEPRECATED(void func(void))))
>    ^
>/usr/local/include/ruby-2.5//amd64-freebsd11/ruby/config.h:123:21: note: expanded from macro 'NORETURN'
>#define NORETURN(x) __attribute__ ((__noreturn__)) x
>                    ^
>cursor.c:102:9: warning: division by zero is undefined [-Wdivision-by-zero]
>    if (rb_scan_args(argc, argv, "01", &a))
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>cursor.c:102:9: warning: division by zero is undefined [-Wdivision-by-zero]
>    if (rb_scan_args(argc, argv, "01", &a))
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2198:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs+1, varc, vari+1))
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>cursor.c:102:9: warning: division by zero is undefined [-Wdivision-by-zero]
>    if (rb_scan_args(argc, argv, "01", &a))
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2203:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs+1, varc, vari+1))
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>cursor.c:102:9: warning: division by zero is undefined [-Wdivision-by-zero]
>    if (rb_scan_args(argc, argv, "01", &a))
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>cursor.c:102:9: warning: division by zero is undefined [-Wdivision-by-zero]
>    if (rb_scan_args(argc, argv, "01", &a))
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>cursor.c:102:9: warning: division by zero is undefined [-Wdivision-by-zero]
>    if (rb_scan_args(argc, argv, "01", &a))
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 5 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>cursor.c:187:42: warning: initializing 'VALUE *' (aka 'unsigned long *') with an expression of type 'volatile VALUE *' (aka 'volatile unsigned long *') discards qualifiers [-Wincompatible-pointer-types-discards-qualifiers]
>    cnt = rb_scan_args(argc, argv, "12", &a, &b, &c);
>                                         ^~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2179:28: note: expanded from macro 'rb_scan_args'
>                      (sizeof((VALUE*[]){__VA_ARGS__})/sizeof(VALUE*)), \
>                                         ^~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:34: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                                               ^~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:42: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                                                ^~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2228:7: note: expanded from macro 'rb_scan_args_verify_count'
>    ((varc)/(rb_scan_args_count(fmt, varc)))
>      ^~~~
>cursor.c:187:42: warning: initializing 'VALUE *' (aka 'unsigned long *') with an expression of type 'volatile VALUE *' (aka 'volatile unsigned long *') discards qualifiers [-Wincompatible-pointer-types-discards-qualifiers]
>    cnt = rb_scan_args(argc, argv, "12", &a, &b, &c);
>                                         ^~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2179:28: note: expanded from macro 'rb_scan_args'
>                      (sizeof((VALUE*[]){__VA_ARGS__})/sizeof(VALUE*)), \
>                                         ^~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:34: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                                               ^~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:42: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                                                ^~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2228:38: note: expanded from macro 'rb_scan_args_verify_count'
>    ((varc)/(rb_scan_args_count(fmt, varc)))
>                                     ^~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2224:10: note: expanded from macro 'rb_scan_args_count'
>     == (varc) || \
>         ^~~~
>cursor.c:187:42: warning: initializing 'VALUE *' (aka 'unsigned long *') with an expression of type 'volatile VALUE *' (aka 'volatile unsigned long *') discards qualifiers [-Wincompatible-pointer-types-discards-qualifiers]
>    cnt = rb_scan_args(argc, argv, "12", &a, &b, &c);
>                                         ^~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2180:21: note: expanded from macro 'rb_scan_args'
>                      ((VALUE*[]){__VA_ARGS__})), \
>                                  ^~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:41: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                                                      ^~~~
>cursor.c:187:11: warning: division by zero is undefined [-Wdivision-by-zero]
>    cnt = rb_scan_args(argc, argv, "12", &a, &b, &c);
>          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>cursor.c:187:11: warning: division by zero is undefined [-Wdivision-by-zero]
>    cnt = rb_scan_args(argc, argv, "12", &a, &b, &c);
>          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2198:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs+1, varc, vari+1))
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>cursor.c:187:11: warning: division by zero is undefined [-Wdivision-by-zero]
>    cnt = rb_scan_args(argc, argv, "12", &a, &b, &c);
>          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2203:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs+1, varc, vari+1))
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>cursor.c:187:11: warning: division by zero is undefined [-Wdivision-by-zero]
>    cnt = rb_scan_args(argc, argv, "12", &a, &b, &c);
>          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>--- common.o ---
>common.c:1232:51: warning: 'rb_hash_ifnone' is deprecated [-Wdeprecated-declarations]
>--- cursor.o ---
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>--- common.o ---
>        if ((v = rb_hash_aref(f, rb_str_new2("txn"))) != rb_hash_ifnone(f)) {
>--- cursor.o ---
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>--- common.o ---
>                                                         ^
>--- cursor.o ---
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>--- common.o ---
>/usr/local/include/ruby-2.5/ruby/backward.h:25:33: note: 'rb_hash_ifnone' has been explicitly marked deprecated here
>--- cursor.o ---
>cursor.c:187:11: warning: division by zero is undefined [-Wdivision-by-zero]
>    cnt = rb_scan_args(argc, argv, "12", &a, &b, &c);
>--- common.o ---
>DECLARE_DEPRECATED_FEATURE(2.2, rb_hash_ifnone);
>                                ^
>--- cursor.o ---
>          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>cursor.c:187:11: warning: division by zero is undefined [-Wdivision-by-zero]
>    cnt = rb_scan_args(argc, argv, "12", &a, &b, &c);
>          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 5 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>--- common.o ---
>common.c:1232:66: error: too many arguments to function call, expected 0, have 1
>        if ((v = rb_hash_aref(f, rb_str_new2("txn"))) != rb_hash_ifnone(f)) {
>                                                         ~~~~~~~~~~~~~~ ^
>/usr/local/include/ruby-2.5/ruby/backward.h:25:1: note: 'rb_hash_ifnone' declared here
>DECLARE_DEPRECATED_FEATURE(2.2, rb_hash_ifnone);
>^
>/usr/local/include/ruby-2.5/ruby/backward.h:13:5: note: expanded from macro 'DECLARE_DEPRECATED_FEATURE'
>    NORETURN(ERRORFUNC(("deprecated since "#ver), DEPRECATED(void func(void))))
>    ^
>/usr/local/include/ruby-2.5//amd64-freebsd11/ruby/config.h:123:21: note: expanded from macro 'NORETURN'
>#define NORETURN(x) __attribute__ ((__noreturn__)) x
>                    ^
>common.c:1244:56: warning: 'rb_hash_ifnone' is deprecated [-Wdeprecated-declarations]
>        else if ((v = rb_hash_aref(f, rb_str_new2("env"))) != rb_hash_ifnone(f)) {
>                                                              ^
>/usr/local/include/ruby-2.5/ruby/backward.h:25:33: note: 'rb_hash_ifnone' has been explicitly marked deprecated here
>DECLARE_DEPRECATED_FEATURE(2.2, rb_hash_ifnone);
>                                ^
>common.c:1244:71: error: too many arguments to function call, expected 0, have 1
>        else if ((v = rb_hash_aref(f, rb_str_new2("env"))) != rb_hash_ifnone(f)) {
>                                                              ~~~~~~~~~~~~~~ ^
>/usr/local/include/ruby-2.5/ruby/backward.h:25:1: note: 'rb_hash_ifnone' declared here
>DECLARE_DEPRECATED_FEATURE(2.2, rb_hash_ifnone);
>^
>/usr/local/include/ruby-2.5/ruby/backward.h:13:5: note: expanded from macro 'DECLARE_DEPRECATED_FEATURE'
>    NORETURN(ERRORFUNC(("deprecated since "#ver), DEPRECATED(void func(void))))
>    ^
>/usr/local/include/ruby-2.5//amd64-freebsd11/ruby/config.h:123:21: note: expanded from macro 'NORETURN'
>#define NORETURN(x) __attribute__ ((__noreturn__)) x
>                    ^
>common.c:1257:59: warning: 'rb_hash_ifnone' is deprecated [-Wdeprecated-declarations]
>            if ((v = rb_hash_aref(f, rb_intern("set_flags"))) != rb_hash_ifnone(f)) {
>                                                                 ^
>/usr/local/include/ruby-2.5/ruby/backward.h:25:33: note: 'rb_hash_ifnone' has been explicitly marked deprecated here
>DECLARE_DEPRECATED_FEATURE(2.2, rb_hash_ifnone);
>                                ^
>--- cursor.o ---
>cursor.c:359:11: warning: division by zero is undefined [-Wdivision-by-zero]
>    cnt = rb_scan_args(argc, argv, "21", &a, &b, &c);
>          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>--- common.o ---
>common.c:1257:74: error: too many arguments to function call, expected 0, have 1
>            if ((v = rb_hash_aref(f, rb_intern("set_flags"))) != rb_hash_ifnone(f)) {
>                                                                 ~~~~~~~~~~~~~~ ^
>--- cursor.o ---
>cursor.c:359:11: warning: division by zero is undefined [-Wdivision-by-zero]
>--- common.o ---
>/usr/local/include/ruby-2.5/ruby/backward.h:25:1: note: 'rb_hash_ifnone' declared here
>DECLARE_DEPRECATED_FEATURE(2.2, rb_hash_ifnone);
>--- cursor.o ---
>    cnt = rb_scan_args(argc, argv, "21", &a, &b, &c);
>          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>--- common.o ---
>^
>--- cursor.o ---
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>--- common.o ---
>/usr/local/include/ruby-2.5/ruby/backward.h:13:5: note: expanded from macro 'DECLARE_DEPRECATED_FEATURE'
>--- cursor.o ---
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>--- common.o ---
>    NORETURN(ERRORFUNC(("deprecated since "#ver), DEPRECATED(void func(void))))
>    ^
>--- cursor.o ---
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>--- common.o ---
>/usr/local/include/ruby-2.5//amd64-freebsd11/ruby/config.h:123:21: note: expanded from macro 'NORETURN'
>--- cursor.o ---
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>--- common.o ---
>#define NORETURN(x) __attribute__ ((__noreturn__)) x
>                    ^
>--- cursor.o ---
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2198:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs+1, varc, vari+1))
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>cursor.c:359:11: warning: division by zero is undefined [-Wdivision-by-zero]
>--- common.o ---
>common.c:1261:45: warning: 'rb_hash_ifnone' is deprecated [-Wdeprecated-declarations]
>--- cursor.o ---
>    cnt = rb_scan_args(argc, argv, "21", &a, &b, &c);
>          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>--- common.o ---
>            else if ((v = rb_hash_aref(f, tmp)) != rb_hash_ifnone(f)) {
>                                                   ^
>/usr/local/include/ruby-2.5/ruby/backward.h:25:33: note: 'rb_hash_ifnone' has been explicitly marked deprecated here
>DECLARE_DEPRECATED_FEATURE(2.2, rb_hash_ifnone);
>                                ^
>--- cursor.o ---
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2203:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs+1, varc, vari+1))
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>cursor.c:359:11: warning: division by zero is undefined [-Wdivision-by-zero]
>    cnt = rb_scan_args(argc, argv, "21", &a, &b, &c);
>          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>cursor.c:359:11: warning: division by zero is undefined [-Wdivision-by-zero]
>    cnt = rb_scan_args(argc, argv, "21", &a, &b, &c);
>          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>--- common.o ---
>common.c:1261:60: error: too many arguments to function call, expected 0, have 1
>            else if ((v = rb_hash_aref(f, tmp)) != rb_hash_ifnone(f)) {
>                                                   ~~~~~~~~~~~~~~ ^
>--- cursor.o ---
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>--- common.o ---
>/usr/local/include/ruby-2.5/ruby/backward.h:25:1: note: 'rb_hash_ifnone' declared here
>DECLARE_DEPRECATED_FEATURE(2.2, rb_hash_ifnone);
>^
>--- cursor.o ---
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>--- common.o ---
>/usr/local/include/ruby-2.5/ruby/backward.h:13:5: note: expanded from macro 'DECLARE_DEPRECATED_FEATURE'
>--- cursor.o ---
>cursor.c:359:11: warning: division by zero is undefined [-Wdivision-by-zero]
>--- common.o ---
>    NORETURN(ERRORFUNC(("deprecated since "#ver), DEPRECATED(void func(void))))
>    ^
>/usr/local/include/ruby-2.5//amd64-freebsd11/ruby/config.h:123:21: note: expanded from macro 'NORETURN'
>#define NORETURN(x) __attribute__ ((__noreturn__)) x
>                    ^
>--- cursor.o ---
>    cnt = rb_scan_args(argc, argv, "21", &a, &b, &c);
>          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 5 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>23 warnings and 2 errors generated.
>*** [cursor.o] Error code 1
>
>make[2]: stopped in /wrkdirs/usr/ports/databases/ruby-bdb/work/bdb-0.6.6/src
>--- common.o ---
>common.c:1573:6: warning: implicit declaration of function 'RBASIC_SET_CLASS_RAW' is invalid in C99 [-Wimplicit-function-declaration]
>            RBASIC_SET_CLASS_RAW(obj, bdb_cBtree);
>            ^
>common.c:1349:17: warning: division by zero is undefined [-Wdivision-by-zero]
>    switch(nb = rb_scan_args(argc, argv, "04", &a, &b, &d, &e)) {
>                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:1349:17: warning: division by zero is undefined [-Wdivision-by-zero]
>    switch(nb = rb_scan_args(argc, argv, "04", &a, &b, &d, &e)) {
>                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2198:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs+1, varc, vari+1))
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:1349:17: warning: division by zero is undefined [-Wdivision-by-zero]
>    switch(nb = rb_scan_args(argc, argv, "04", &a, &b, &d, &e)) {
>                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2203:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs+1, varc, vari+1))
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:1349:17: warning: division by zero is undefined [-Wdivision-by-zero]
>    switch(nb = rb_scan_args(argc, argv, "04", &a, &b, &d, &e)) {
>                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:1349:17: warning: division by zero is undefined [-Wdivision-by-zero]
>    switch(nb = rb_scan_args(argc, argv, "04", &a, &b, &d, &e)) {
>                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:1349:17: warning: division by zero is undefined [-Wdivision-by-zero]
>    switch(nb = rb_scan_args(argc, argv, "04", &a, &b, &d, &e)) {
>                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 5 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:1638:26: warning: implicit declaration of function 'RCLASS_M_TBL' is invalid in C99 [-Wimplicit-function-declaration]
>        if (cl == bdb_cBtree || RCLASS_M_TBL(cl) == RCLASS_M_TBL(bdb_cBtree)) {
>                                ^
>common.c:1894:9: warning: division by zero is undefined [-Wdivision-by-zero]
>    if (rb_scan_args(argc, argv, "21", &a, &b, &c) == 3) {
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:1894:9: warning: division by zero is undefined [-Wdivision-by-zero]
>    if (rb_scan_args(argc, argv, "21", &a, &b, &c) == 3) {
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2198:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs+1, varc, vari+1))
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:1894:9: warning: division by zero is undefined [-Wdivision-by-zero]
>    if (rb_scan_args(argc, argv, "21", &a, &b, &c) == 3) {
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2203:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs+1, varc, vari+1))
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:1894:9: warning: division by zero is undefined [-Wdivision-by-zero]
>    if (rb_scan_args(argc, argv, "21", &a, &b, &c) == 3) {
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:1894:9: warning: division by zero is undefined [-Wdivision-by-zero]
>    if (rb_scan_args(argc, argv, "21", &a, &b, &c) == 3) {
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:1894:9: warning: division by zero is undefined [-Wdivision-by-zero]
>    if (rb_scan_args(argc, argv, "21", &a, &b, &c) == 3) {
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 5 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:2032:12: warning: division by zero is undefined [-Wdivision-by-zero]
>    switch(rb_scan_args(argc, argv, "12", &a, &b, &c)) {
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:2032:12: warning: division by zero is undefined [-Wdivision-by-zero]
>    switch(rb_scan_args(argc, argv, "12", &a, &b, &c)) {
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2198:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs+1, varc, vari+1))
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:2032:12: warning: division by zero is undefined [-Wdivision-by-zero]
>    switch(rb_scan_args(argc, argv, "12", &a, &b, &c)) {
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2203:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs+1, varc, vari+1))
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:2032:12: warning: division by zero is undefined [-Wdivision-by-zero]
>    switch(rb_scan_args(argc, argv, "12", &a, &b, &c)) {
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:2032:12: warning: division by zero is undefined [-Wdivision-by-zero]
>    switch(rb_scan_args(argc, argv, "12", &a, &b, &c)) {
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:2032:12: warning: division by zero is undefined [-Wdivision-by-zero]
>    switch(rb_scan_args(argc, argv, "12", &a, &b, &c)) {
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 5 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:2103:5: warning: division by zero is undefined [-Wdivision-by-zero]
>    rb_scan_args(argc, argv, "11", &key, &if_none);
>    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:2103:5: warning: division by zero is undefined [-Wdivision-by-zero]
>    rb_scan_args(argc, argv, "11", &key, &if_none);
>    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2198:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs+1, varc, vari+1))
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:2103:5: warning: division by zero is undefined [-Wdivision-by-zero]
>    rb_scan_args(argc, argv, "11", &key, &if_none);
>    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2203:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs+1, varc, vari+1))
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:2103:5: warning: division by zero is undefined [-Wdivision-by-zero]
>    rb_scan_args(argc, argv, "11", &key, &if_none);
>    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:2103:5: warning: division by zero is undefined [-Wdivision-by-zero]
>    rb_scan_args(argc, argv, "11", &key, &if_none);
>    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:2103:5: warning: division by zero is undefined [-Wdivision-by-zero]
>    rb_scan_args(argc, argv, "11", &key, &if_none);
>    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 5 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:2143:12: warning: division by zero is undefined [-Wdivision-by-zero]
>    switch(rb_scan_args(argc, argv, "12", &a, &b, &c)) {
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:2143:12: warning: division by zero is undefined [-Wdivision-by-zero]
>    switch(rb_scan_args(argc, argv, "12", &a, &b, &c)) {
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2198:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs+1, varc, vari+1))
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:2143:12: warning: division by zero is undefined [-Wdivision-by-zero]
>    switch(rb_scan_args(argc, argv, "12", &a, &b, &c)) {
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2203:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs+1, varc, vari+1))
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:2143:12: warning: division by zero is undefined [-Wdivision-by-zero]
>    switch(rb_scan_args(argc, argv, "12", &a, &b, &c)) {
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:2143:12: warning: division by zero is undefined [-Wdivision-by-zero]
>    switch(rb_scan_args(argc, argv, "12", &a, &b, &c)) {
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:2143:12: warning: division by zero is undefined [-Wdivision-by-zero]
>    switch(rb_scan_args(argc, argv, "12", &a, &b, &c)) {
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 5 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>--- docs/doc/index.html ---
>Parsing sources...
>  5% [ 1/18]  arraylike.rd
>--- all ---
>common.c:2249:13: warning: division by zero is undefined [-Wdivision-by-zero]
>    switch (rb_scan_args(argc, argv, "03", &a, &b, &c)) {
>            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:2249:13: warning: division by zero is undefined [-Wdivision-by-zero]
>    switch (rb_scan_args(argc, argv, "03", &a, &b, &c)) {
>            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2198:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs+1, varc, vari+1))
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:2249:13: warning: division by zero is undefined [-Wdivision-by-zero]
>    switch (rb_scan_args(argc, argv, "03", &a, &b, &c)) {
>            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2203:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs+1, varc, vari+1))
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:2249:13: warning: division by zero is undefined [-Wdivision-by-zero]
>    switch (rb_scan_args(argc, argv, "03", &a, &b, &c)) {
>            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>--- docs/doc/index.html ---
> 11% [ 2/18]  bdb.rb
>--- all ---
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:2249:13: warning: division by zero is undefined [-Wdivision-by-zero]
>    switch (rb_scan_args(argc, argv, "03", &a, &b, &c)) {
>            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:2249:13: warning: division by zero is undefined [-Wdivision-by-zero]
>    switch (rb_scan_args(argc, argv, "03", &a, &b, &c)) {
>            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 5 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>--- docs/doc/index.html ---
> 16% [ 3/18]  common.rb
>--- all ---
>common.c:3007:51: warning: 'rb_hash_ifnone' is deprecated [-Wdeprecated-declarations]
>        if ((g = rb_hash_aref(f, rb_intern("flags"))) != rb_hash_ifnone(f) ||
>                                                         ^
>/usr/local/include/ruby-2.5/ruby/backward.h:25:33: note: 'rb_hash_ifnone' has been explicitly marked deprecated here
>DECLARE_DEPRECATED_FEATURE(2.2, rb_hash_ifnone);
>                                ^
>common.c:3007:66: error: too many arguments to function call, expected 0, have 1
>        if ((g = rb_hash_aref(f, rb_intern("flags"))) != rb_hash_ifnone(f) ||
>                                                         ~~~~~~~~~~~~~~ ^
>/usr/local/include/ruby-2.5/ruby/backward.h:25:1: note: 'rb_hash_ifnone' declared here
>DECLARE_DEPRECATED_FEATURE(2.2, rb_hash_ifnone);
>^
>/usr/local/include/ruby-2.5/ruby/backward.h:13:5: note: expanded from macro 'DECLARE_DEPRECATED_FEATURE'
>    NORETURN(ERRORFUNC(("deprecated since "#ver), DEPRECATED(void func(void))))
>    ^
>/usr/local/include/ruby-2.5//amd64-freebsd11/ruby/config.h:123:21: note: expanded from macro 'NORETURN'
>#define NORETURN(x) __attribute__ ((__noreturn__)) x
>                    ^
>common.c:3008:53: warning: 'rb_hash_ifnone' is deprecated [-Wdeprecated-declarations]
>            (g = rb_hash_aref(f, rb_str_new2("flags"))) != rb_hash_ifnone(f)) {
>                                                           ^
>/usr/local/include/ruby-2.5/ruby/backward.h:25:33: note: 'rb_hash_ifnone' has been explicitly marked deprecated here
>DECLARE_DEPRECATED_FEATURE(2.2, rb_hash_ifnone);
>                                ^
>common.c:3008:68: error: too many arguments to function call, expected 0, have 1
>            (g = rb_hash_aref(f, rb_str_new2("flags"))) != rb_hash_ifnone(f)) {
>                                                           ~~~~~~~~~~~~~~ ^
>/usr/local/include/ruby-2.5/ruby/backward.h:25:1: note: 'rb_hash_ifnone' declared here
>DECLARE_DEPRECATED_FEATURE(2.2, rb_hash_ifnone);
>^
>/usr/local/include/ruby-2.5/ruby/backward.h:13:5: note: expanded from macro 'DECLARE_DEPRECATED_FEATURE'
>    NORETURN(ERRORFUNC(("deprecated since "#ver), DEPRECATED(void func(void))))
>    ^
>/usr/local/include/ruby-2.5//amd64-freebsd11/ruby/config.h:123:21: note: expanded from macro 'NORETURN'
>#define NORETURN(x) __attribute__ ((__noreturn__)) x
>                    ^
>common.c:3022:6: warning: division by zero is undefined [-Wdivision-by-zero]
>            rb_scan_args(argc, argv, "01", &st.set);
>            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3022:6: warning: division by zero is undefined [-Wdivision-by-zero]
>            rb_scan_args(argc, argv, "01", &st.set);
>            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2198:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs+1, varc, vari+1))
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3022:6: warning: division by zero is undefined [-Wdivision-by-zero]
>            rb_scan_args(argc, argv, "01", &st.set);
>            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2203:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs+1, varc, vari+1))
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3022:6: warning: division by zero is undefined [-Wdivision-by-zero]
>            rb_scan_args(argc, argv, "01", &st.set);
>            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3022:6: warning: division by zero is undefined [-Wdivision-by-zero]
>            rb_scan_args(argc, argv, "01", &st.set);
>            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3022:6: warning: division by zero is undefined [-Wdivision-by-zero]
>            rb_scan_args(argc, argv, "01", &st.set);
>            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 5 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3026:3: warning: division by zero is undefined [-Wdivision-by-zero]
>                rb_scan_args(argc, argv, "11", &st.set, &bulkv);
>                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3026:3: warning: division by zero is undefined [-Wdivision-by-zero]
>                rb_scan_args(argc, argv, "11", &st.set, &bulkv);
>                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2198:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs+1, varc, vari+1))
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3026:3: warning: division by zero is undefined [-Wdivision-by-zero]
>                rb_scan_args(argc, argv, "11", &st.set, &bulkv);
>                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2203:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs+1, varc, vari+1))
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3026:3: warning: division by zero is undefined [-Wdivision-by-zero]
>                rb_scan_args(argc, argv, "11", &st.set, &bulkv);
>                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3026:3: warning: division by zero is undefined [-Wdivision-by-zero]
>                rb_scan_args(argc, argv, "11", &st.set, &bulkv);
>                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3026:3: warning: division by zero is undefined [-Wdivision-by-zero]
>                rb_scan_args(argc, argv, "11", &st.set, &bulkv);
>                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 5 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3029:7: warning: division by zero is undefined [-Wdivision-by-zero]
>                if (rb_scan_args(argc, argv, "02", &st.set, &bulkv) == 2) {
>                    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3029:7: warning: division by zero is undefined [-Wdivision-by-zero]
>                if (rb_scan_args(argc, argv, "02", &st.set, &bulkv) == 2) {
>                    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2198:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs+1, varc, vari+1))
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3029:7: warning: division by zero is undefined [-Wdivision-by-zero]
>                if (rb_scan_args(argc, argv, "02", &st.set, &bulkv) == 2) {
>                    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2203:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs+1, varc, vari+1))
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3029:7: warning: division by zero is undefined [-Wdivision-by-zero]
>                if (rb_scan_args(argc, argv, "02", &st.set, &bulkv) == 2) {
>                    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3029:7: warning: division by zero is undefined [-Wdivision-by-zero]
>                if (rb_scan_args(argc, argv, "02", &st.set, &bulkv) == 2) {
>                    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3029:7: warning: division by zero is undefined [-Wdivision-by-zero]
>                if (rb_scan_args(argc, argv, "02", &st.set, &bulkv) == 2) {
>                    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 5 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3201:5: warning: division by zero is undefined [-Wdivision-by-zero]
>    rb_scan_args(argc, argv, "01", tmp);
>    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3201:5: warning: division by zero is undefined [-Wdivision-by-zero]
>    rb_scan_args(argc, argv, "01", tmp);
>    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2198:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs+1, varc, vari+1))
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3201:5: warning: division by zero is undefined [-Wdivision-by-zero]
>    rb_scan_args(argc, argv, "01", tmp);
>    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2203:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs+1, varc, vari+1))
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3201:5: warning: division by zero is undefined [-Wdivision-by-zero]
>    rb_scan_args(argc, argv, "01", tmp);
>    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3201:5: warning: division by zero is undefined [-Wdivision-by-zero]
>    rb_scan_args(argc, argv, "01", tmp);
>    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3201:5: warning: division by zero is undefined [-Wdivision-by-zero]
>    rb_scan_args(argc, argv, "01", tmp);
>    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 5 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>--- docs/doc/index.html ---
> 22% [ 4/18]  comxxx.rb
>--- all ---
>common.c:3209:5: warning: division by zero is undefined [-Wdivision-by-zero]
>    rb_scan_args(argc, argv, "01", tmp);
>    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3209:5: warning: division by zero is undefined [-Wdivision-by-zero]
>    rb_scan_args(argc, argv, "01", tmp);
>    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2198:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs+1, varc, vari+1))
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3209:5: warning: division by zero is undefined [-Wdivision-by-zero]
>    rb_scan_args(argc, argv, "01", tmp);
>    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2203:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs+1, varc, vari+1))
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3209:5: warning: division by zero is undefined [-Wdivision-by-zero]
>    rb_scan_args(argc, argv, "01", tmp);
>    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3209:5: warning: division by zero is undefined [-Wdivision-by-zero]
>    rb_scan_args(argc, argv, "01", tmp);
>    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3209:5: warning: division by zero is undefined [-Wdivision-by-zero]
>    rb_scan_args(argc, argv, "01", tmp);
>    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 5 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3291:12: warning: division by zero is undefined [-Wdivision-by-zero]
>    return rb_funcall(obj, rb_intern("each_pair"), 0, 0);
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2470:6: note: expanded from macro 'rb_funcall'
>            rb_varargs_argc_check(rb_funcall_argc, rb_funcall_nargs), \
>            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:1775:3: note: expanded from macro 'rb_varargs_argc_check'
>         rb_varargs_bad_length(argc, vargc)), \
>         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:1770:56: note: expanded from macro 'rb_varargs_bad_length'
>#     define rb_varargs_bad_length(argc, vargc) ((argc)/((argc) == (vargc)))
>                                                       ^~~~~~~~~~~~~~~~~~~~
>common.c:3351:51: warning: 'rb_hash_ifnone' is deprecated [-Wdeprecated-declarations]
>        if ((g = rb_hash_aref(f, rb_intern("flags"))) != rb_hash_ifnone(f) ||
>                                                         ^
>/usr/local/include/ruby-2.5/ruby/backward.h:25:33: note: 'rb_hash_ifnone' has been explicitly marked deprecated here
>DECLARE_DEPRECATED_FEATURE(2.2, rb_hash_ifnone);
>                                ^
>common.c:3351:66: error: too many arguments to function call, expected 0, have 1
>        if ((g = rb_hash_aref(f, rb_intern("flags"))) != rb_hash_ifnone(f) ||
>                                                         ~~~~~~~~~~~~~~ ^
>/usr/local/include/ruby-2.5/ruby/backward.h:25:1: note: 'rb_hash_ifnone' declared here
>DECLARE_DEPRECATED_FEATURE(2.2, rb_hash_ifnone);
>^
>/usr/local/include/ruby-2.5/ruby/backward.h:13:5: note: expanded from macro 'DECLARE_DEPRECATED_FEATURE'
>    NORETURN(ERRORFUNC(("deprecated since "#ver), DEPRECATED(void func(void))))
>    ^
>/usr/local/include/ruby-2.5//amd64-freebsd11/ruby/config.h:123:21: note: expanded from macro 'NORETURN'
>#define NORETURN(x) __attribute__ ((__noreturn__)) x
>                    ^
>common.c:3352:53: warning: 'rb_hash_ifnone' is deprecated [-Wdeprecated-declarations]
>            (g = rb_hash_aref(f, rb_str_new2("flags"))) != rb_hash_ifnone(f)) {
>                                                           ^
>/usr/local/include/ruby-2.5/ruby/backward.h:25:33: note: 'rb_hash_ifnone' has been explicitly marked deprecated here
>DECLARE_DEPRECATED_FEATURE(2.2, rb_hash_ifnone);
>                                ^
>common.c:3352:68: error: too many arguments to function call, expected 0, have 1
>            (g = rb_hash_aref(f, rb_str_new2("flags"))) != rb_hash_ifnone(f)) {
>                                                           ~~~~~~~~~~~~~~ ^
>/usr/local/include/ruby-2.5/ruby/backward.h:25:1: note: 'rb_hash_ifnone' declared here
>DECLARE_DEPRECATED_FEATURE(2.2, rb_hash_ifnone);
>^
>/usr/local/include/ruby-2.5/ruby/backward.h:13:5: note: expanded from macro 'DECLARE_DEPRECATED_FEATURE'
>    NORETURN(ERRORFUNC(("deprecated since "#ver), DEPRECATED(void func(void))))
>    ^
>/usr/local/include/ruby-2.5//amd64-freebsd11/ruby/config.h:123:21: note: expanded from macro 'NORETURN'
>#define NORETURN(x) __attribute__ ((__noreturn__)) x
>                    ^
>--- docs/doc/index.html ---
> 27% [ 5/18]  cursor.rb
>--- all ---
>common.c:3580:9: warning: division by zero is undefined [-Wdivision-by-zero]
>    if (rb_scan_args(argc, argv, "01", &flagv) == 1) {
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3580:9: warning: division by zero is undefined [-Wdivision-by-zero]
>    if (rb_scan_args(argc, argv, "01", &flagv) == 1) {
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2198:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs+1, varc, vari+1))
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3580:9: warning: division by zero is undefined [-Wdivision-by-zero]
>    if (rb_scan_args(argc, argv, "01", &flagv) == 1) {
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2203:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs+1, varc, vari+1))
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3580:9: warning: division by zero is undefined [-Wdivision-by-zero]
>    if (rb_scan_args(argc, argv, "01", &flagv) == 1) {
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3580:9: warning: division by zero is undefined [-Wdivision-by-zero]
>    if (rb_scan_args(argc, argv, "01", &flagv) == 1) {
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3580:9: warning: division by zero is undefined [-Wdivision-by-zero]
>    if (rb_scan_args(argc, argv, "01", &flagv) == 1) {
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 5 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3649:9: warning: division by zero is undefined [-Wdivision-by-zero]
>    if (rb_scan_args(argc, argv, "01", &flagv) == 1) {
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3649:9: warning: division by zero is undefined [-Wdivision-by-zero]
>    if (rb_scan_args(argc, argv, "01", &flagv) == 1) {
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2198:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs+1, varc, vari+1))
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3649:9: warning: division by zero is undefined [-Wdivision-by-zero]
>    if (rb_scan_args(argc, argv, "01", &flagv) == 1) {
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2203:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs+1, varc, vari+1))
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3649:9: warning: division by zero is undefined [-Wdivision-by-zero]
>    if (rb_scan_args(argc, argv, "01", &flagv) == 1) {
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3649:9: warning: division by zero is undefined [-Wdivision-by-zero]
>    if (rb_scan_args(argc, argv, "01", &flagv) == 1) {
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3649:9: warning: division by zero is undefined [-Wdivision-by-zero]
>    if (rb_scan_args(argc, argv, "01", &flagv) == 1) {
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 5 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>--- docs/doc/index.html ---
> 33% [ 6/18]  cursor.rd
> 38% [ 7/18]  env.rb
>--- all ---
>common.c:3719:9: warning: division by zero is undefined [-Wdivision-by-zero]
>    if (rb_scan_args(argc, argv, "01", &flagv) == 1) {
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3719:9: warning: division by zero is undefined [-Wdivision-by-zero]
>    if (rb_scan_args(argc, argv, "01", &flagv) == 1) {
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2198:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs+1, varc, vari+1))
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3719:9: warning: division by zero is undefined [-Wdivision-by-zero]
>    if (rb_scan_args(argc, argv, "01", &flagv) == 1) {
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2203:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs+1, varc, vari+1))
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3719:9: warning: division by zero is undefined [-Wdivision-by-zero]
>    if (rb_scan_args(argc, argv, "01", &flagv) == 1) {
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3719:9: warning: division by zero is undefined [-Wdivision-by-zero]
>    if (rb_scan_args(argc, argv, "01", &flagv) == 1) {
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3719:9: warning: division by zero is undefined [-Wdivision-by-zero]
>    if (rb_scan_args(argc, argv, "01", &flagv) == 1) {
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 5 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3889:9: warning: division by zero is undefined [-Wdivision-by-zero]
>    if (rb_scan_args(argc, argv, "11", &a, &b) == 2) {
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3889:9: warning: division by zero is undefined [-Wdivision-by-zero]
>    if (rb_scan_args(argc, argv, "11", &a, &b) == 2) {
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2198:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs+1, varc, vari+1))
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3889:9: warning: division by zero is undefined [-Wdivision-by-zero]
>    if (rb_scan_args(argc, argv, "11", &a, &b) == 2) {
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2203:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs+1, varc, vari+1))
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3889:9: warning: division by zero is undefined [-Wdivision-by-zero]
>    if (rb_scan_args(argc, argv, "11", &a, &b) == 2) {
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3889:9: warning: division by zero is undefined [-Wdivision-by-zero]
>    if (rb_scan_args(argc, argv, "11", &a, &b) == 2) {
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3889:9: warning: division by zero is undefined [-Wdivision-by-zero]
>    if (rb_scan_args(argc, argv, "11", &a, &b) == 2) {
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 5 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3916:9: warning: division by zero is undefined [-Wdivision-by-zero]
>    if (rb_scan_args(argc, argv, "11", &a, &b) == 2) {
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3916:9: warning: division by zero is undefined [-Wdivision-by-zero]
>    if (rb_scan_args(argc, argv, "11", &a, &b) == 2) {
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2198:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs+1, varc, vari+1))
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3916:9: warning: division by zero is undefined [-Wdivision-by-zero]
>    if (rb_scan_args(argc, argv, "11", &a, &b) == 2) {
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2203:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs+1, varc, vari+1))
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3916:9: warning: division by zero is undefined [-Wdivision-by-zero]
>    if (rb_scan_args(argc, argv, "11", &a, &b) == 2) {
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3916:9: warning: division by zero is undefined [-Wdivision-by-zero]
>    if (rb_scan_args(argc, argv, "11", &a, &b) == 2) {
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3916:9: warning: division by zero is undefined [-Wdivision-by-zero]
>    if (rb_scan_args(argc, argv, "11", &a, &b) == 2) {
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 5 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3944:5: warning: division by zero is undefined [-Wdivision-by-zero]
>    rb_scan_args(argc, argv, "30", &a, &b, &c);
>    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3944:5: warning: division by zero is undefined [-Wdivision-by-zero]
>    rb_scan_args(argc, argv, "30", &a, &b, &c);
>    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2198:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs+1, varc, vari+1))
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3944:5: warning: division by zero is undefined [-Wdivision-by-zero]
>    rb_scan_args(argc, argv, "30", &a, &b, &c);
>    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2203:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs+1, varc, vari+1))
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3944:5: warning: division by zero is undefined [-Wdivision-by-zero]
>    rb_scan_args(argc, argv, "30", &a, &b, &c);
>    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3944:5: warning: division by zero is undefined [-Wdivision-by-zero]
>    rb_scan_args(argc, argv, "30", &a, &b, &c);
>    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:3944:5: warning: division by zero is undefined [-Wdivision-by-zero]
>    rb_scan_args(argc, argv, "30", &a, &b, &c);
>    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 5 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>--- docs/doc/index.html ---
> 44% [ 8/18]  env.rd
> 50% [ 9/18]  exception.rb
> 55% [10/18]  hashlike.rd
> 61% [11/18]  lock.rb
>--- all ---
>common.c:4012:9: warning: division by zero is undefined [-Wdivision-by-zero]
>    if (rb_scan_args(argc, argv, "11", &a, &b) == 2) {
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:4012:9: warning: division by zero is undefined [-Wdivision-by-zero]
>    if (rb_scan_args(argc, argv, "11", &a, &b) == 2) {
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2198:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs+1, varc, vari+1))
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:4012:9: warning: division by zero is undefined [-Wdivision-by-zero]
>    if (rb_scan_args(argc, argv, "11", &a, &b) == 2) {
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2203:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs+1, varc, vari+1))
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:4012:9: warning: division by zero is undefined [-Wdivision-by-zero]
>    if (rb_scan_args(argc, argv, "11", &a, &b) == 2) {
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:4012:9: warning: division by zero is undefined [-Wdivision-by-zero]
>    if (rb_scan_args(argc, argv, "11", &a, &b) == 2) {
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:4012:9: warning: division by zero is undefined [-Wdivision-by-zero]
>    if (rb_scan_args(argc, argv, "11", &a, &b) == 2) {
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 5 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>--- docs/doc/index.html ---
> 66% [12/18]  lock.rd
> 72% [13/18]  log.rb
> 77% [14/18]  log.rd
> 83% [15/18]  sequence.rb
>--- all ---
>common.c:4141:9: warning: division by zero is undefined [-Wdivision-by-zero]
>    if (rb_scan_args(argc, argv, "11", &second, &flag) == 2) {
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:4141:9: warning: division by zero is undefined [-Wdivision-by-zero]
>    if (rb_scan_args(argc, argv, "11", &second, &flag) == 2) {
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2198:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs+1, varc, vari+1))
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:4141:9: warning: division by zero is undefined [-Wdivision-by-zero]
>    if (rb_scan_args(argc, argv, "11", &second, &flag) == 2) {
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2203:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs+1, varc, vari+1))
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:4141:9: warning: division by zero is undefined [-Wdivision-by-zero]
>    if (rb_scan_args(argc, argv, "11", &second, &flag) == 2) {
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:4141:9: warning: division by zero is undefined [-Wdivision-by-zero]
>    if (rb_scan_args(argc, argv, "11", &second, &flag) == 2) {
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:4141:9: warning: division by zero is undefined [-Wdivision-by-zero]
>    if (rb_scan_args(argc, argv, "11", &second, &flag) == 2) {
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 5 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>--- docs/doc/index.html ---
> 88% [16/18]  sequence.rd
> 94% [17/18]  transaction.rb
>--- all ---
>common.c:4227:12: warning: division by zero is undefined [-Wdivision-by-zero]
>    switch(rb_scan_args(argc, argv, "02", &iov, &flagv)) {
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:4227:12: warning: division by zero is undefined [-Wdivision-by-zero]
>    switch(rb_scan_args(argc, argv, "02", &iov, &flagv)) {
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2198:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs+1, varc, vari+1))
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:4227:12: warning: division by zero is undefined [-Wdivision-by-zero]
>    switch(rb_scan_args(argc, argv, "02", &iov, &flagv)) {
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2203:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs+1, varc, vari+1))
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:4227:12: warning: division by zero is undefined [-Wdivision-by-zero]
>    switch(rb_scan_args(argc, argv, "02", &iov, &flagv)) {
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:4227:12: warning: division by zero is undefined [-Wdivision-by-zero]
>    switch(rb_scan_args(argc, argv, "02", &iov, &flagv)) {
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>common.c:4227:12: warning: division by zero is undefined [-Wdivision-by-zero]
>    switch(rb_scan_args(argc, argv, "02", &iov, &flagv)) {
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2178:9: note: expanded from macro 'rb_scan_args'
>        rb_scan_args0(argc,argvp,fmt,\
>        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2351:9: note: expanded from macro 'rb_scan_args0'
>                     (rb_scan_args_verify(fmt, varc), vars))
>                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2236:11: note: expanded from macro 'rb_scan_args_verify'
>        verify = rb_scan_args_verify_count(fmt, varc); \
>                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>note: (skipping 5 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
>/usr/local/include/ruby-2.5/ruby/ruby.h:2202:6: note: expanded from macro 'rb_scan_args_count_hash'
>     rb_scan_args_count_block(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2197:6: note: expanded from macro 'rb_scan_args_count_block'
>     rb_scan_args_count_end(fmt, ofs, varc, vari) : \
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>/usr/local/include/ruby-2.5/ruby/ruby.h:2193:12: note: expanded from macro 'rb_scan_args_count_end'
>    ((vari)/(!fmt[ofs] || rb_scan_args_bad_format(fmt)))
>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>--- docs/doc/index.html ---
>100% [18/18]  transaction.rd
>--- all ---
>131 warnings and 8 errors generated.
>*** [common.o] Error code 1
>
>make[2]: stopped in /wrkdirs/usr/ports/databases/ruby-bdb/work/bdb-0.6.6/src
>2 errors
>
>make[2]: stopped in /wrkdirs/usr/ports/databases/ruby-bdb/work/bdb-0.6.6/src
>*** [all] Error code 2
>
>make[1]: stopped in /wrkdirs/usr/ports/databases/ruby-bdb/work/bdb-0.6.6
>--- docs/doc/index.html ---
>
>Generating Darkfish format into /wrkdirs/usr/ports/databases/ruby-bdb/work/bdb-0.6.6/docs/doc...
>
>  Files:       18
>
>  Classes:     17 (1 undocumented)
>  Modules:      1 (0 undocumented)
>  Constants:    0 (0 undocumented)
>  Attributes:   0 (0 undocumented)
>  Methods:    270 (0 undocumented)
>
>  Total:      288 (1 undocumented)
>   99.65% documented
>
>  Elapsed: 2.8s
>
>1 error
>
>make[1]: stopped in /wrkdirs/usr/ports/databases/ruby-bdb/work/bdb-0.6.6
>===> Compilation failed unexpectedly.
>Try to set MAKE_JOBS_UNSAFE=yes and rebuild before reporting the failure to
>the maintainer.
>*** Error code 1
>
>Stop.
>make: stopped in /usr/ports/databases/ruby-bdb
>build of databases/ruby-bdb | ruby25-bdb-0.6.6_5 ended at Thu Dec 28 08:29:50 JST 2017
>build time: 00:02:12
>!!! build failure encountered !!!

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Attachments on bug 224625: 189145 | 189146