commit 97a672c3fd69c4aa873e1514649d4df2e6e52788
Author: Dimitry Andric <dim@FreeBSD.org>
Date:   Sun Oct 24 21:41:16 2021 +0200

    devel/glog: work around clang 13 assertion

diff --git a/devel/glog/Makefile b/devel/glog/Makefile
index de9bf320b662..3b5fcd4039a8 100644
--- a/devel/glog/Makefile
+++ b/devel/glog/Makefile
@@ -27,4 +27,11 @@ USE_LDCONFIG=	yes
 GH_ACCOUNT=	google
 USE_GITHUB=	yes
 
+.include <bsd.port.pre.mk>
+
+.if ${COMPILER_TYPE} == clang && ${COMPILER_VERSION} >= 130
+# https://bugs.llvm.org/show_bug.cgi?id=50881
+EXTRA_PATCHES=	${FILESDIR}/extra-patch-clang13
+.endif
+
 .include <bsd.port.mk>
diff --git a/devel/glog/files/extra-patch-clang13 b/devel/glog/files/extra-patch-clang13
new file mode 100644
index 000000000000..53f4696a6447
--- /dev/null
+++ b/devel/glog/files/extra-patch-clang13
@@ -0,0 +1,10 @@
+--- CMakeLists.txt.orig	2021-05-07 23:05:04 UTC
++++ CMakeLists.txt
+@@ -712,6 +705,7 @@ if (BUILD_TESTING)
+     add_executable (stacktrace_unittest
+       src/stacktrace_unittest.cc
+     )
++    set_source_files_properties ( src/stacktrace_unittest.cc PROPERTIES COMPILE_FLAGS "-flegacy-pass-manager" )
+ 
+     target_link_libraries (stacktrace_unittest PRIVATE ${_GLOG_TEST_LIBS})
+   endif (HAVE_STACKTRACE)