Attachment 157132 Details for Bug 198611 – Update ELF Tool Chain to r3222 (from r3197)

[patch] Update ELF Tool Chain to r3222 (from r3197)

elftc-r3222.diff (text/plain), 40.09 KB, created by Ed Maste on 2015-05-25 18:31:29 UTC

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Creator: Ed Maste

Created: 2015-05-25 18:31:29 UTC

Size: 40.09 KB

patch

obsolete

>commit f02ec2f32a1c9984cad6ec9329999adb7f870995
>Author: Ed Maste <emaste@freebsd.org>
>Date:   Mon May 18 12:17:05 2015 -0400
>
>    Update to ELF Tool Chain r3222
>    
>    Highlights (upstream revisions):
>     - Fix SHT_GROUP handling in elfcopy/strip (3206 3220 3221)
>     - Misc elfcopy / strip bug fixes (3215 3216 3217)
>     - Many demangler improvements (3199 3200 3201 3202 3203 3204 3205 3208
>       3210 3211 3212)
>     - Improve GNU binutils compatibility in elfcopy / strip (3213 3214)
>     - Add -g option to readelf(1): dump contents of section groups (3219)
>     - Add EM_IAMCU 32-bit Intel MCU (3198)
>    
>    PR:		198611 (exp-run)
>    Sponsored by:	The FreeBSD Foundation
>
>diff --git a/contrib/elftoolchain/common/_elftc.h b/contrib/elftoolchain/common/_elftc.h
>index 45f0abd..f800922 100644
>--- a/contrib/elftoolchain/common/_elftc.h
>+++ b/contrib/elftoolchain/common/_elftc.h
>@@ -342,12 +342,13 @@ struct name {							\
> 
> 
> #if defined(__GLIBC__) || defined(__linux__)
>-
>+#ifndef _GNU_SOURCE
> /*
>  * GLIBC based systems have a global 'char *' pointer referencing
>  * the executable's name.
>  */
> extern const char *program_invocation_short_name;
>+#endif	/* !_GNU_SOURCE */
> 
> #define	ELFTC_GETPROGNAME()	program_invocation_short_name
> 
>diff --git a/contrib/elftoolchain/common/elfdefinitions.h b/contrib/elftoolchain/common/elfdefinitions.h
>index a53acde..d81d8d6 100644
>--- a/contrib/elftoolchain/common/elfdefinitions.h
>+++ b/contrib/elftoolchain/common/elfdefinitions.h
>@@ -565,6 +565,7 @@ _ELF_DEFINE_EM(EM_SPARC,            2, "SPARC")				\
> _ELF_DEFINE_EM(EM_386,              3, "Intel 80386")			\
> _ELF_DEFINE_EM(EM_68K,              4, "Motorola 68000")		\
> _ELF_DEFINE_EM(EM_88K,              5, "Motorola 88000")		\
>+_ELF_DEFINE_EM(EM_IAMCU,            6, "Intel MCU")			\
> _ELF_DEFINE_EM(EM_860,              7, "Intel 80860")			\
> _ELF_DEFINE_EM(EM_MIPS,             8, "MIPS I Architecture")		\
> _ELF_DEFINE_EM(EM_S370,             9, "IBM System/370 Processor")	\
>diff --git a/contrib/elftoolchain/elfcopy/elfcopy.h b/contrib/elftoolchain/elfcopy/elfcopy.h
>index b750246..e64e0cf 100644
>--- a/contrib/elftoolchain/elfcopy/elfcopy.h
>+++ b/contrib/elftoolchain/elfcopy/elfcopy.h
>@@ -237,6 +237,7 @@ struct elfcopy {
> 	uint64_t	*secndx;	/* section index map. */
> 	uint64_t	*symndx;	/* symbol index map. */
> 	unsigned char	*v_rel;		/* symbols needed by relocation. */
>+	unsigned char	*v_grp;		/* symbols refered by section group. */
> 	unsigned char	*v_secsym;	/* sections with section symbol. */
> 	STAILQ_HEAD(, segment) v_seg;	/* list of segments. */
> 	STAILQ_HEAD(, sec_action) v_sac;/* list of section operations. */
>diff --git a/contrib/elftoolchain/elfcopy/main.c b/contrib/elftoolchain/elfcopy/main.c
>index a48aea5..9546f6e 100644
>--- a/contrib/elftoolchain/elfcopy/main.c
>+++ b/contrib/elftoolchain/elfcopy/main.c
>@@ -404,8 +404,19 @@ create_elf(struct elfcopy *ecp)
> 	 * Insert SHDR table into the internal section list as a "pseudo"
> 	 * section, so later it will get sorted and resynced just as "normal"
> 	 * sections.
>+	 *
>+	 * Under FreeBSD, Binutils objcopy always put the section header
>+	 * at the end of all the sections. We want to do the same here.
>+	 *
>+	 * However, note that the behaviour is still different with Binutils:
>+	 * elfcopy checks the FreeBSD OSABI tag to tell whether it needs to
>+	 * move the section headers, while Binutils is probably configured
>+	 * this way when it's compiled on FreeBSD.
> 	 */
>-	shtab = insert_shtab(ecp, 0);
>+	if (oeh.e_ident[EI_OSABI] == ELFOSABI_FREEBSD)
>+		shtab = insert_shtab(ecp, 1);
>+	else
>+		shtab = insert_shtab(ecp, 0);
> 
> 	/*
> 	 * Resync section offsets in the output object. This is needed
>@@ -485,6 +496,11 @@ free_elf(struct elfcopy *ecp)
> 			free(sec);
> 		}
> 	}
>+
>+	if (ecp->secndx != NULL) {
>+		free(ecp->secndx);
>+		ecp->secndx = NULL;
>+	}
> }
> 
> /* Create a temporary file. */
>diff --git a/contrib/elftoolchain/elfcopy/sections.c b/contrib/elftoolchain/elfcopy/sections.c
>index 7c43a35..c809e1c 100644
>--- a/contrib/elftoolchain/elfcopy/sections.c
>+++ b/contrib/elftoolchain/elfcopy/sections.c
>@@ -56,6 +56,7 @@ static void	print_data(const char *d, size_t sz);
> static void	print_section(struct section *s);
> static void	*read_section(struct section *s, size_t *size);
> static void	update_reloc(struct elfcopy *ecp, struct section *s);
>+static void	update_section_group(struct elfcopy *ecp, struct section *s);
> 
> int
> is_remove_section(struct elfcopy *ecp, const char *name)
>@@ -552,6 +553,14 @@ copy_content(struct elfcopy *ecp)
> 		    (s->type == SHT_REL || s->type == SHT_RELA))
> 			filter_reloc(ecp, s);
> 
>+		/*
>+		 * The section indices in the SHT_GROUP section needs
>+		 * to be updated since we might have stripped some
>+		 * sections and changed section numbering.
>+		 */
>+		if (s->type == SHT_GROUP)
>+			update_section_group(ecp, s);
>+
> 		if (is_modify_section(ecp, s->name))
> 			modify_section(ecp, s);
> 
>@@ -571,6 +580,68 @@ copy_content(struct elfcopy *ecp)
> 	}
> }
> 
>+
>+/*
>+ * Update section group section. The section indices in the SHT_GROUP
>+ * section need update after section numbering changed.
>+ */
>+static void
>+update_section_group(struct elfcopy *ecp, struct section *s)
>+{
>+	GElf_Shdr	 ish;
>+	Elf_Data	*id;
>+	uint32_t	*ws, *wd;
>+	uint64_t	 n;
>+	size_t		 ishnum;
>+	int		 i, j;
>+
>+	if (!elf_getshnum(ecp->ein, &ishnum))
>+		errx(EXIT_FAILURE, "elf_getshnum failed: %s",
>+		    elf_errmsg(-1));
>+
>+	if (gelf_getshdr(s->is, &ish) == NULL)
>+		errx(EXIT_FAILURE, "gelf_getehdr() failed: %s",
>+		    elf_errmsg(-1));
>+
>+	if ((id = elf_getdata(s->is, NULL)) == NULL)
>+		errx(EXIT_FAILURE, "elf_getdata() failed: %s",
>+		    elf_errmsg(-1));
>+
>+	if (ish.sh_size == 0)
>+		return;
>+
>+	if (ish.sh_entsize == 0)
>+		ish.sh_entsize = 4;
>+
>+	ws = id->d_buf;
>+
>+	/* We only support COMDAT section. */
>+	if ((*ws & GRP_COMDAT) == 0)
>+		return;
>+
>+	if ((s->buf = malloc(ish.sh_size)) == NULL)
>+		err(EXIT_FAILURE, "malloc failed");
>+
>+	s->sz = ish.sh_size;
>+
>+	wd = s->buf;
>+
>+	/* Copy the flag word as-is. */
>+	*wd = *ws;
>+
>+	/* Update the section indices. */
>+	n = ish.sh_size / ish.sh_entsize;
>+	for(i = 1, j = 1; (uint64_t)i < n; i++) {
>+		if (ws[i] != SHN_UNDEF && ws[i] < ishnum &&
>+		    ecp->secndx[ws[i]] != 0)
>+			wd[j++] = ecp->secndx[ws[i]];
>+		else
>+			s->sz -= 4;
>+	}
>+
>+	s->nocopy = 1;
>+}
>+
> /*
>  * Filter relocation entries, only keep those entries whose
>  * symbol is in the keep list.
>@@ -1028,8 +1099,11 @@ copy_shdr(struct elfcopy *ecp, struct section *s, const char *name, int copy,
> 				osh.sh_flags |= SHF_WRITE;
> 			if (sec_flags & SF_CODE)
> 				osh.sh_flags |= SHF_EXECINSTR;
>-		} else
>+		} else {
> 			osh.sh_flags = ish.sh_flags;
>+			if (ish.sh_type == SHT_REL || ish.sh_type == SHT_RELA)
>+				osh.sh_flags |= SHF_INFO_LINK;
>+		}
> 	}
> 
> 	if (name == NULL)
>diff --git a/contrib/elftoolchain/elfcopy/symbols.c b/contrib/elftoolchain/elfcopy/symbols.c
>index 4a7d38a..c0f7a51 100644
>--- a/contrib/elftoolchain/elfcopy/symbols.c
>+++ b/contrib/elftoolchain/elfcopy/symbols.c
>@@ -77,7 +77,8 @@ static int	is_weak_symbol(unsigned char st_info);
> static int	lookup_exact_string(hash_head *hash, const char *buf,
> 		    const char *s);
> static int	generate_symbols(struct elfcopy *ecp);
>-static void	mark_symbols(struct elfcopy *ecp, size_t sc);
>+static void	mark_reloc_symbols(struct elfcopy *ecp, size_t sc);
>+static void	mark_section_group_symbols(struct elfcopy *ecp, size_t sc);
> static int	match_wildcard(const char *name, const char *pattern);
> uint32_t	str_hash(const char *s);
> 
>@@ -160,6 +161,10 @@ is_needed_symbol(struct elfcopy *ecp, int i, GElf_Sym *s)
> 	if (BIT_ISSET(ecp->v_rel, i))
> 		return (1);
> 
>+	/* Symbols refered by COMDAT sections are needed. */
>+	if (BIT_ISSET(ecp->v_grp, i))
>+		return (1);
>+
> 	/*
> 	 * For relocatable files (.o files), global and weak symbols
> 	 * are needed.
>@@ -207,7 +212,10 @@ is_remove_symbol(struct elfcopy *ecp, size_t sc, int i, GElf_Sym *s,
> 		return (1);
> 
> 	if (ecp->v_rel == NULL)
>-		mark_symbols(ecp, sc);
>+		mark_reloc_symbols(ecp, sc);
>+
>+	if (ecp->v_grp == NULL)
>+		mark_section_group_symbols(ecp, sc);
> 
> 	if (is_needed_symbol(ecp, i, s))
> 		return (0);
>@@ -233,7 +241,7 @@ is_remove_symbol(struct elfcopy *ecp, size_t sc, int i, GElf_Sym *s,
>  * Mark symbols refered by relocation entries.
>  */
> static void
>-mark_symbols(struct elfcopy *ecp, size_t sc)
>+mark_reloc_symbols(struct elfcopy *ecp, size_t sc)
> {
> 	const char	*name;
> 	Elf_Data	*d;
>@@ -311,6 +319,49 @@ mark_symbols(struct elfcopy *ecp, size_t sc)
> 		    elf_errmsg(elferr));
> }
> 
>+static void
>+mark_section_group_symbols(struct elfcopy *ecp, size_t sc)
>+{
>+	const char	*name;
>+	Elf_Scn		*s;
>+	GElf_Shdr	 sh;
>+	size_t		 indx;
>+	int		 elferr;
>+
>+	ecp->v_grp = calloc((sc + 7) / 8, 1);
>+	if (ecp->v_grp == NULL)
>+		err(EXIT_FAILURE, "calloc failed");
>+
>+	if (elf_getshstrndx(ecp->ein, &indx) == 0)
>+		errx(EXIT_FAILURE, "elf_getshstrndx failed: %s",
>+		    elf_errmsg(-1));
>+
>+	s = NULL;
>+	while ((s = elf_nextscn(ecp->ein, s)) != NULL) {
>+		if (gelf_getshdr(s, &sh) != &sh)
>+			errx(EXIT_FAILURE, "elf_getshdr failed: %s",
>+			    elf_errmsg(-1));
>+
>+		if (sh.sh_type != SHT_GROUP)
>+			continue;
>+
>+		if ((name = elf_strptr(ecp->ein, indx, sh.sh_name)) == NULL)
>+			errx(EXIT_FAILURE, "elf_strptr failed: %s",
>+			    elf_errmsg(-1));
>+		if (is_remove_section(ecp, name))
>+			continue;
>+
>+		if (sh.sh_info > 0 && sh.sh_info < sc)
>+			BIT_SET(ecp->v_grp, sh.sh_info);
>+		else if (sh.sh_info != 0)
>+			warnx("invalid symbox index");
>+	}
>+	elferr = elf_errno();
>+	if (elferr != 0)
>+		errx(EXIT_FAILURE, "elf_nextscn failed: %s",
>+		    elf_errmsg(elferr));
>+}
>+
> static int
> generate_symbols(struct elfcopy *ecp)
> {
>@@ -351,6 +402,8 @@ generate_symbols(struct elfcopy *ecp)
> 	ecp->symtab->buf = sy_buf;
> 	ecp->strtab->buf = st_buf;
> 
>+	gsym = NULL;
>+
> 	/*
> 	 * Create bit vector v_secsym, which is used to mark sections
> 	 * that already have corresponding STT_SECTION symbols.
>@@ -384,7 +437,7 @@ generate_symbols(struct elfcopy *ecp)
> 	/* Symbol table should exist if this function is called. */
> 	if (symndx == 0) {
> 		warnx("can't find .strtab section");
>-		return (0);
>+		goto clean;
> 	}
> 
> 	/* Locate .symtab of input object. */
>@@ -413,7 +466,6 @@ generate_symbols(struct elfcopy *ecp)
> 	 * output object, it is used by update_reloc() later to update
> 	 * relocation information.
> 	 */
>-	gsym = NULL;
> 	sc = ish.sh_size / ish.sh_entsize;
> 	if (sc > 0) {
> 		ecp->symndx = calloc(sc, sizeof(*ecp->symndx));
>@@ -427,7 +479,7 @@ generate_symbols(struct elfcopy *ecp)
> 			if (elferr != 0)
> 				errx(EXIT_FAILURE, "elf_getdata failed: %s",
> 				    elf_errmsg(elferr));
>-			return (0);
>+			goto clean;
> 		}
> 	} else
> 		return (0);
>@@ -523,7 +575,7 @@ generate_symbols(struct elfcopy *ecp)
> 	 * check if that only local symbol is the reserved symbol.
> 	 */
> 	if (sy_buf->nls <= 1 && sy_buf->ngs == 0)
>-		return (0);
>+		goto clean;
> 
> 	/*
> 	 * Create STT_SECTION symbols for sections that do not already
>@@ -550,6 +602,7 @@ generate_symbols(struct elfcopy *ecp)
> 			sym.st_value = s->vma;
> 			sym.st_size  = 0;
> 			sym.st_info  = GELF_ST_INFO(STB_LOCAL, STT_SECTION);
>+			sym.st_other = STV_DEFAULT;
> 			/*
> 			 * Don't let add_to_symtab() touch sym.st_shndx.
> 			 * In this case, we know the index already.
>@@ -583,6 +636,12 @@ generate_symbols(struct elfcopy *ecp)
> 	}
> 
> 	return (1);
>+
>+clean:
>+	free(gsym);
>+	free_symtab(ecp);
>+
>+	return (0);
> }
> 
> void
>@@ -624,7 +683,9 @@ create_symtab(struct elfcopy *ecp)
> 	if (((ecp->flags & SYMTAB_INTACT) == 0) && !generate_symbols(ecp)) {
> 		TAILQ_REMOVE(&ecp->v_sec, ecp->symtab, sec_list);
> 		TAILQ_REMOVE(&ecp->v_sec, ecp->strtab, sec_list);
>+		free(ecp->symtab->buf);
> 		free(ecp->symtab);
>+		free(ecp->strtab->buf);
> 		free(ecp->strtab);
> 		ecp->symtab = NULL;
> 		ecp->strtab = NULL;
>@@ -697,6 +758,23 @@ free_symtab(struct elfcopy *ecp)
> 			}
> 		}
> 	}
>+
>+	if (ecp->symndx != NULL) {
>+		free(ecp->symndx);
>+		ecp->symndx = NULL;
>+	}
>+	if (ecp->v_rel != NULL) {
>+		free(ecp->v_rel);
>+		ecp->v_rel = NULL;
>+	}
>+	if (ecp->v_grp != NULL) {
>+		free(ecp->v_grp);
>+		ecp->v_grp = NULL;
>+	}
>+	if (ecp->v_secsym != NULL) {
>+		free(ecp->v_secsym);
>+		ecp->v_secsym = NULL;
>+	}
> }
> 
> void
>diff --git a/contrib/elftoolchain/libdwarf/libdwarf_reloc.c b/contrib/elftoolchain/libdwarf/libdwarf_reloc.c
>index 96bb785..25b21bd 100644
>--- a/contrib/elftoolchain/libdwarf/libdwarf_reloc.c
>+++ b/contrib/elftoolchain/libdwarf/libdwarf_reloc.c
>@@ -75,6 +75,7 @@ _dwarf_get_reloc_size(Dwarf_Debug dbg, Dwarf_Unsigned rel_type)
> 			return (4);
> 		break;
> 	case EM_386:
>+	case EM_IAMCU:
> 		if (rel_type == R_386_32)
> 			return (4);
> 		break;
>diff --git a/contrib/elftoolchain/libelftc/libelftc_dem_gnu3.c b/contrib/elftoolchain/libelftc/libelftc_dem_gnu3.c
>index 1cdb0e7..897c618 100644
>--- a/contrib/elftoolchain/libelftc/libelftc_dem_gnu3.c
>+++ b/contrib/elftoolchain/libelftc/libelftc_dem_gnu3.c
>@@ -50,7 +50,7 @@ ELFTC_VCSID("$Id: libelftc_dem_gnu3.c 3194 2015-05-05 17:55:16Z emaste $");
> 
> enum type_qualifier {
> 	TYPE_PTR, TYPE_REF, TYPE_CMX, TYPE_IMG, TYPE_EXT, TYPE_RST, TYPE_VAT,
>-	TYPE_CST
>+	TYPE_CST, TYPE_VEC
> };
> 
> struct vector_type_qualifier {
>@@ -84,6 +84,7 @@ struct cpp_demangle_data {
> 	int			 func_type;
> 	const char		*cur;		/* current mangled name ptr */
> 	const char		*last_sname;	/* last source name */
>+	int			 push_head;
> };
> 
> #define	CPP_DEMANGLE_TRY_LIMIT	128
>@@ -112,6 +113,8 @@ static int	cpp_demangle_read_array(struct cpp_demangle_data *);
> static int	cpp_demangle_read_encoding(struct cpp_demangle_data *);
> static int	cpp_demangle_read_expr_primary(struct cpp_demangle_data *);
> static int	cpp_demangle_read_expression(struct cpp_demangle_data *);
>+static int	cpp_demangle_read_expression_flat(struct cpp_demangle_data *,
>+		    char **);
> static int	cpp_demangle_read_expression_binary(struct cpp_demangle_data *,
> 		    const char *, size_t);
> static int	cpp_demangle_read_expression_unary(struct cpp_demangle_data *,
>@@ -123,8 +126,12 @@ static int	cpp_demangle_read_function(struct cpp_demangle_data *, int *,
> static int	cpp_demangle_local_source_name(struct cpp_demangle_data *ddata);
> static int	cpp_demangle_read_local_name(struct cpp_demangle_data *);
> static int	cpp_demangle_read_name(struct cpp_demangle_data *);
>+static int	cpp_demangle_read_name_flat(struct cpp_demangle_data *,
>+		    char**);
> static int	cpp_demangle_read_nested_name(struct cpp_demangle_data *);
> static int	cpp_demangle_read_number(struct cpp_demangle_data *, long *);
>+static int	cpp_demangle_read_number_as_string(struct cpp_demangle_data *,
>+		    char **);
> static int	cpp_demangle_read_nv_offset(struct cpp_demangle_data *);
> static int	cpp_demangle_read_offset(struct cpp_demangle_data *);
> static int	cpp_demangle_read_offset_number(struct cpp_demangle_data *);
>@@ -138,6 +145,8 @@ static int	cpp_demangle_read_tmpl_arg(struct cpp_demangle_data *);
> static int	cpp_demangle_read_tmpl_args(struct cpp_demangle_data *);
> static int	cpp_demangle_read_tmpl_param(struct cpp_demangle_data *);
> static int	cpp_demangle_read_type(struct cpp_demangle_data *, int);
>+static int	cpp_demangle_read_type_flat(struct cpp_demangle_data *,
>+		    char **);
> static int	cpp_demangle_read_uqname(struct cpp_demangle_data *);
> static int	cpp_demangle_read_v_offset(struct cpp_demangle_data *);
> static char	*decode_fp_to_double(const char *, size_t);
>@@ -156,8 +165,6 @@ static int	vector_type_qualifier_init(struct vector_type_qualifier *);
> static int	vector_type_qualifier_push(struct vector_type_qualifier *,
> 		    enum type_qualifier);
> 
>-static int cpp_demangle_gnu3_push_head;
>-
> /**
>  * @brief Decode the input string by IA-64 C++ ABI style.
>  *
>@@ -190,7 +197,6 @@ cpp_demangle_gnu3(const char *org)
> 	if (!cpp_demangle_data_init(&ddata, org + 2))
> 		return (NULL);
> 
>-	cpp_demangle_gnu3_push_head = 0;
> 	rtn = NULL;
> 
> 	if (!cpp_demangle_read_encoding(&ddata))
>@@ -277,6 +283,7 @@ cpp_demangle_data_init(struct cpp_demangle_data *d, const char *cur)
> 	d->func_type = 0;
> 	d->cur = cur;
> 	d->last_sname = NULL;
>+	d->push_head = 0;
> 
> 	return (1);
> 
>@@ -309,7 +316,6 @@ cpp_demangle_push_fp(struct cpp_demangle_data *ddata,
> 	fp = ddata->cur;
> 	while (*ddata->cur != 'E')
> 		++ddata->cur;
>-	++ddata->cur;
> 
> 	if ((f = decoder(fp, ddata->cur - fp)) == NULL)
> 		return (0);
>@@ -320,6 +326,8 @@ cpp_demangle_push_fp(struct cpp_demangle_data *ddata,
> 
> 	free(f);
> 
>+	++ddata->cur;
>+
> 	return (rtn);
> }
> 
>@@ -331,7 +339,7 @@ cpp_demangle_push_str(struct cpp_demangle_data *ddata, const char *str,
> 	if (ddata == NULL || str == NULL || len == 0)
> 		return (0);
> 
>-	if (cpp_demangle_gnu3_push_head > 0)
>+	if (ddata->push_head > 0)
> 		return (vector_str_push(&ddata->output_tmp, str, len));
> 
> 	return (vector_str_push(&ddata->output, str, len));
>@@ -403,7 +411,8 @@ cpp_demangle_push_type_qualifier(struct cpp_demangle_data *ddata,
> 			if (type_str != NULL) {
> 				if (!vector_str_push(&subst_v, "*", 1))
> 					goto clean;
>-				if (!cpp_demangle_push_subst_v(ddata, &subst_v))
>+				if (!cpp_demangle_push_subst_v(ddata,
>+				    &subst_v))
> 					goto clean;
> 			}
> 			break;
>@@ -414,7 +423,8 @@ cpp_demangle_push_type_qualifier(struct cpp_demangle_data *ddata,
> 			if (type_str != NULL) {
> 				if (!vector_str_push(&subst_v, "&", 1))
> 					goto clean;
>-				if (!cpp_demangle_push_subst_v(ddata, &subst_v))
>+				if (!cpp_demangle_push_subst_v(ddata,
>+				    &subst_v))
> 					goto clean;
> 			}
> 			break;
>@@ -425,7 +435,8 @@ cpp_demangle_push_type_qualifier(struct cpp_demangle_data *ddata,
> 			if (type_str != NULL) {
> 				if (!vector_str_push(&subst_v, " complex", 8))
> 					goto clean;
>-				if (!cpp_demangle_push_subst_v(ddata, &subst_v))
>+				if (!cpp_demangle_push_subst_v(ddata,
>+				    &subst_v))
> 					goto clean;
> 			}
> 			break;
>@@ -434,23 +445,26 @@ cpp_demangle_push_type_qualifier(struct cpp_demangle_data *ddata,
> 			if (!cpp_demangle_push_str(ddata, " imaginary", 10))
> 				goto clean;
> 			if (type_str != NULL) {
>-				if (!vector_str_push(&subst_v, " imaginary", 10))
>+				if (!vector_str_push(&subst_v, " imaginary",
>+				    10))
> 					goto clean;
>-				if (!cpp_demangle_push_subst_v(ddata, &subst_v))
>+				if (!cpp_demangle_push_subst_v(ddata,
>+				    &subst_v))
> 					goto clean;
> 			}
> 			break;
> 
> 		case TYPE_EXT:
>-			if (e_idx > v->ext_name.size - 1)
>+			if (v->ext_name.size == 0 ||
>+			    e_idx > v->ext_name.size - 1)
> 				goto clean;
>-			if ((e_len = strlen(v->ext_name.container[e_idx])) == 0)
>+			if ((e_len = strlen(v->ext_name.container[e_idx])) ==
>+			    0)
> 				goto clean;
>-			if ((buf = malloc(sizeof(char) * (e_len + 1))) == NULL)
>+			if ((buf = malloc(e_len + 2)) == NULL)
> 				goto clean;
>-
>-			memcpy(buf, " ", 1);
>-			memcpy(buf + 1, v->ext_name.container[e_idx], e_len);
>+			snprintf(buf, e_len + 2, " %s",
>+			    v->ext_name.container[e_idx]);
> 
> 			if (!cpp_demangle_push_str(ddata, buf, e_len + 1)) {
> 				free(buf);
>@@ -463,7 +477,8 @@ cpp_demangle_push_type_qualifier(struct cpp_demangle_data *ddata,
> 					free(buf);
> 					goto clean;
> 				}
>-				if (!cpp_demangle_push_subst_v(ddata, &subst_v)) {
>+				if (!cpp_demangle_push_subst_v(ddata,
>+				    &subst_v)) {
> 					free(buf);
> 					goto clean;
> 				}
>@@ -478,7 +493,8 @@ cpp_demangle_push_type_qualifier(struct cpp_demangle_data *ddata,
> 			if (type_str != NULL) {
> 				if (!vector_str_push(&subst_v, " restrict", 9))
> 					goto clean;
>-				if (!cpp_demangle_push_subst_v(ddata, &subst_v))
>+				if (!cpp_demangle_push_subst_v(ddata,
>+				    &subst_v))
> 					goto clean;
> 			}
> 			break;
>@@ -489,7 +505,8 @@ cpp_demangle_push_type_qualifier(struct cpp_demangle_data *ddata,
> 			if (type_str != NULL) {
> 				if (!vector_str_push(&subst_v, " volatile", 9))
> 					goto clean;
>-				if (!cpp_demangle_push_subst_v(ddata, &subst_v))
>+				if (!cpp_demangle_push_subst_v(ddata,
>+				    &subst_v))
> 					goto clean;
> 			}
> 			break;
>@@ -500,11 +517,42 @@ cpp_demangle_push_type_qualifier(struct cpp_demangle_data *ddata,
> 			if (type_str != NULL) {
> 				if (!vector_str_push(&subst_v, " const", 6))
> 					goto clean;
>-				if (!cpp_demangle_push_subst_v(ddata, &subst_v))
>+				if (!cpp_demangle_push_subst_v(ddata,
>+				    &subst_v))
> 					goto clean;
> 			}
> 			break;
> 
>+		case TYPE_VEC:
>+			if (v->ext_name.size == 0 ||
>+			    e_idx > v->ext_name.size - 1)
>+				goto clean;
>+			if ((e_len = strlen(v->ext_name.container[e_idx])) ==
>+			    0)
>+				goto clean;
>+			if ((buf = malloc(e_len + 12)) == NULL)
>+				goto clean;
>+			snprintf(buf, e_len + 12, " __vector(%s)",
>+			    v->ext_name.container[e_idx]);
>+			if (!cpp_demangle_push_str(ddata, buf, e_len + 11)) {
>+				free(buf);
>+				goto clean;
>+			}
>+			if (type_str != NULL) {
>+				if (!vector_str_push(&subst_v, buf,
>+				    e_len + 11)) {
>+					free(buf);
>+					goto clean;
>+				}
>+				if (!cpp_demangle_push_subst_v(ddata,
>+				    &subst_v)) {
>+					free(buf);
>+					goto clean;
>+				}
>+			}
>+			free(buf);
>+			++e_idx;
>+			break;
> 		};
> 		--idx;
> 	}
>@@ -655,10 +703,14 @@ cpp_demangle_read_expr_primary(struct cpp_demangle_data *ddata)
> 
> 	switch (*ddata->cur) {
> 	case 'b':
>+		if (*(ddata->cur + 2) != 'E')
>+			return (0);
> 		switch (*(++ddata->cur)) {
> 		case '0':
>+			ddata->cur += 2;
> 			return (cpp_demangle_push_str(ddata, "false", 5));
> 		case '1':
>+			ddata->cur += 2;
> 			return (cpp_demangle_push_str(ddata, "true", 4));
> 		default:
> 			return (0);
>@@ -707,7 +759,8 @@ cpp_demangle_read_expr_primary(struct cpp_demangle_data *ddata)
> 			++ddata->cur;
> 		}
> 		++ddata->cur;
>-		return (cpp_demangle_push_str(ddata, num, ddata->cur - num));
>+		return (cpp_demangle_push_str(ddata, num,
>+		    ddata->cur - num - 1));
> 
> 	default:
> 		return (0);
>@@ -999,6 +1052,38 @@ cpp_demangle_read_expression(struct cpp_demangle_data *ddata)
> }
> 
> static int
>+cpp_demangle_read_expression_flat(struct cpp_demangle_data *ddata, char **str)
>+{
>+	struct vector_str *output;
>+	size_t i, p_idx, idx, exp_len;
>+	char *exp;
>+
>+	output = ddata->push_head > 0 ? &ddata->output_tmp :
>+	    &ddata->output;
>+
>+	p_idx = output->size;
>+
>+	if (!cpp_demangle_read_expression(ddata))
>+		return (0);
>+
>+	if ((exp = vector_str_substr(output, p_idx, output->size - 1,
>+	    &exp_len)) == NULL)
>+		return (0);
>+
>+	idx = output->size;
>+	for (i = p_idx; i < idx; ++i) {
>+		if (!vector_str_pop(output)) {
>+			free(exp);
>+			return (0);
>+		}
>+	}
>+
>+	*str = exp;
>+
>+	return (1);
>+}
>+
>+static int
> cpp_demangle_read_expression_binary(struct cpp_demangle_data *ddata,
>     const char *name, size_t len)
> {
>@@ -1127,12 +1212,65 @@ cpp_demangle_read_function(struct cpp_demangle_data *ddata, int *ext_c,
> static int
> cpp_demangle_read_encoding(struct cpp_demangle_data *ddata)
> {
>+	char *name, *type, *num_str;
>+	long offset;
>+	int rtn;
> 
> 	if (ddata == NULL || *ddata->cur == '\0')
> 		return (0);
> 
> 	/* special name */
> 	switch (SIMPLE_HASH(*ddata->cur, *(ddata->cur + 1))) {
>+	case SIMPLE_HASH('G', 'A'):
>+		if (!cpp_demangle_push_str(ddata, "hidden alias for ", 17))
>+			return (0);
>+		ddata->cur += 2;
>+		if (*ddata->cur == '\0')
>+			return (0);
>+		return (cpp_demangle_read_encoding(ddata));
>+
>+	case SIMPLE_HASH('G', 'R'):
>+		if (!cpp_demangle_push_str(ddata, "reference temporary #", 21))
>+			return (0);
>+		ddata->cur += 2;
>+		if (*ddata->cur == '\0')
>+			return (0);
>+		if (!cpp_demangle_read_name_flat(ddata, &name))
>+			return (0);
>+		rtn = 0;
>+		if (!cpp_demangle_read_number_as_string(ddata, &num_str))
>+			goto clean1;
>+		if (!cpp_demangle_push_str(ddata, num_str, strlen(num_str)))
>+			goto clean2;
>+		if (!cpp_demangle_push_str(ddata, " for ", 5))
>+			goto clean2;
>+		if (!cpp_demangle_push_str(ddata, name, strlen(name)))
>+			goto clean2;
>+		rtn = 1;
>+	clean2:
>+		free(num_str);
>+	clean1:
>+		free(name);
>+		return (rtn);
>+
>+	case SIMPLE_HASH('G', 'T'):
>+		ddata->cur += 2;
>+		if (*ddata->cur == '\0')
>+			return (0);
>+		switch (*ddata->cur) {
>+		case 'n':
>+			if (!cpp_demangle_push_str(ddata,
>+			    "non-transaction clone for ", 26))
>+				return (0);
>+		case 't':
>+		default:
>+			if (!cpp_demangle_push_str(ddata,
>+			    "transaction clone for ", 22))
>+				return (0);
>+		}
>+		++ddata->cur;
>+		return (cpp_demangle_read_encoding(ddata));
>+
> 	case SIMPLE_HASH('G', 'V'):
> 		/* sentry object for 1 time init */
> 		if (!cpp_demangle_push_str(ddata, "guard variable for ", 20))
>@@ -1154,14 +1292,49 @@ cpp_demangle_read_encoding(struct cpp_demangle_data *ddata)
> 			return (0);
> 		return (cpp_demangle_read_encoding(ddata));
> 
>+	case SIMPLE_HASH('T', 'C'):
>+		/* construction vtable */
>+		if (!cpp_demangle_push_str(ddata, "construction vtable for ",
>+		    24))
>+			return (0);
>+		ddata->cur += 2;
>+		if (*ddata->cur == '\0')
>+			return (0);
>+		if (!cpp_demangle_read_type_flat(ddata, &type))
>+			return (0);
>+		rtn = 0;
>+		if (!cpp_demangle_read_number(ddata, &offset))
>+			goto clean3;
>+		if (*ddata->cur++ != '_')
>+			goto clean3;
>+		if (!cpp_demangle_read_type(ddata, 0))
>+			goto clean3;
>+		if (!cpp_demangle_push_str(ddata, "-in-", 4))
>+			goto clean3;
>+		if (!cpp_demangle_push_str(ddata, type, strlen(type)))
>+			goto clean3;
>+		rtn = 1;
>+	clean3:
>+		free(type);
>+		return (rtn);
>+
> 	case SIMPLE_HASH('T', 'D'):
> 		/* typeinfo common proxy */
> 		break;
> 
>+	case SIMPLE_HASH('T', 'F'):
>+		/* typeinfo fn */
>+		if (!cpp_demangle_push_str(ddata, "typeinfo fn for ", 16))
>+			return (0);
>+		ddata->cur += 2;
>+		if (*ddata->cur == '\0')
>+			return (0);
>+		return (cpp_demangle_read_type(ddata, 0));
>+
> 	case SIMPLE_HASH('T', 'h'):
> 		/* virtual function non-virtual override thunk */
>-		if (cpp_demangle_push_str(ddata,
>-		    "virtual function non-virtual override ", 38) == 0)
>+		if (!cpp_demangle_push_str(ddata,
>+		    "virtual function non-virtual override ", 38))
> 			return (0);
> 		ddata->cur += 2;
> 		if (*ddata->cur == '\0')
>@@ -1170,24 +1343,51 @@ cpp_demangle_read_encoding(struct cpp_demangle_data *ddata)
> 			return (0);
> 		return (cpp_demangle_read_encoding(ddata));
> 
>+	case SIMPLE_HASH('T', 'H'):
>+		/* TLS init function */
>+		if (!cpp_demangle_push_str(ddata, "TLS init function for ",
>+		    22))
>+			return (0);
>+		ddata->cur += 2;
>+		if (*ddata->cur == '\0')
>+			return (0);
>+		break;
>+
> 	case SIMPLE_HASH('T', 'I'):
> 		/* typeinfo structure */
>-		/* FALLTHROUGH */
>+		if (!cpp_demangle_push_str(ddata, "typeinfo for ", 13))
>+			return (0);
>+		ddata->cur += 2;
>+		if (*ddata->cur == '\0')
>+			return (0);
>+		return (cpp_demangle_read_type(ddata, 0));
>+
>+	case SIMPLE_HASH('T', 'J'):
>+		/* java class */
>+		if (!cpp_demangle_push_str(ddata, "java Class for ", 15))
>+			return (0);
>+		ddata->cur += 2;
>+		if (*ddata->cur == '\0')
>+			return (0);
>+		return (cpp_demangle_read_type(ddata, 0));
>+
> 	case SIMPLE_HASH('T', 'S'):
> 		/* RTTI name (NTBS) */
>-		if (!cpp_demangle_push_str(ddata, "typeinfo for ", 14))
>+		if (!cpp_demangle_push_str(ddata, "typeinfo name for ", 18))
> 			return (0);
> 		ddata->cur += 2;
> 		if (*ddata->cur == '\0')
> 			return (0);
>-		return (cpp_demangle_read_type(ddata, 1));
>+		return (cpp_demangle_read_type(ddata, 0));
> 
> 	case SIMPLE_HASH('T', 'T'):
> 		/* VTT table */
> 		if (!cpp_demangle_push_str(ddata, "VTT for ", 8))
> 			return (0);
> 		ddata->cur += 2;
>-		return (cpp_demangle_read_type(ddata, 1));
>+		if (*ddata->cur == '\0')
>+			return (0);
>+		return (cpp_demangle_read_type(ddata, 0));
> 
> 	case SIMPLE_HASH('T', 'v'):
> 		/* virtual function virtual override thunk */
>@@ -1208,7 +1408,17 @@ cpp_demangle_read_encoding(struct cpp_demangle_data *ddata)
> 		ddata->cur += 2;
> 		if (*ddata->cur == '\0')
> 			return (0);
>-		return (cpp_demangle_read_type(ddata, 1));
>+		return (cpp_demangle_read_type(ddata, 0));
>+
>+	case SIMPLE_HASH('T', 'W'):
>+		/* TLS wrapper function */
>+		if (!cpp_demangle_push_str(ddata, "TLS wrapper function for ",
>+		    25))
>+			return (0);
>+		ddata->cur += 2;
>+		if (*ddata->cur == '\0')
>+			return (0);
>+		break;
> 	};
> 
> 	return (cpp_demangle_read_name(ddata));
>@@ -1270,8 +1480,7 @@ cpp_demangle_read_name(struct cpp_demangle_data *ddata)
> 	if (ddata == NULL || *ddata->cur == '\0')
> 		return (0);
> 
>-	output = cpp_demangle_gnu3_push_head > 0 ?
>-	    &ddata->output_tmp : &ddata->output;
>+	output = ddata->push_head > 0 ? &ddata->output_tmp : &ddata->output;
> 
> 	subst_str = NULL;
> 
>@@ -1327,6 +1536,38 @@ clean:
> }
> 
> static int
>+cpp_demangle_read_name_flat(struct cpp_demangle_data *ddata, char **str)
>+{
>+	struct vector_str *output;
>+	size_t i, p_idx, idx, name_len;
>+	char *name;
>+
>+	output = ddata->push_head > 0 ? &ddata->output_tmp :
>+	    &ddata->output;
>+
>+	p_idx = output->size;
>+
>+	if (!cpp_demangle_read_name(ddata))
>+		return (0);
>+
>+	if ((name = vector_str_substr(output, p_idx, output->size - 1,
>+	    &name_len)) == NULL)
>+		return (0);
>+
>+	idx = output->size;
>+	for (i = p_idx; i < idx; ++i) {
>+		if (!vector_str_pop(output)) {
>+			free(name);
>+			return (0);
>+		}
>+	}
>+
>+	*str = name;
>+
>+	return (1);
>+}
>+
>+static int
> cpp_demangle_read_nested_name(struct cpp_demangle_data *ddata)
> {
> 	struct vector_str *output, v;
>@@ -1355,8 +1596,7 @@ cpp_demangle_read_nested_name(struct cpp_demangle_data *ddata)
> 		++ddata->cur;
> 	}
> 
>-	output = cpp_demangle_gnu3_push_head > 0 ?
>-	    &ddata->output_tmp : &ddata->output;
>+	output = ddata->push_head > 0 ? &ddata->output_tmp : &ddata->output;
> 	if (!vector_str_init(&v))
> 		return (0);
> 
>@@ -1453,6 +1693,24 @@ cpp_demangle_read_number(struct cpp_demangle_data *ddata, long *rtn)
> }
> 
> static int
>+cpp_demangle_read_number_as_string(struct cpp_demangle_data *ddata, char **str)
>+{
>+	long n;
>+
>+	if (!cpp_demangle_read_number(ddata, &n)) {
>+		*str = NULL;
>+		return (0);
>+	}
>+
>+	if (asprintf(str, "%ld", n) < 0) {
>+		*str = NULL;
>+		return (0);
>+	}
>+
>+	return (1);
>+}
>+
>+static int
> cpp_demangle_read_nv_offset(struct cpp_demangle_data *ddata)
> {
> 
>@@ -1581,9 +1839,18 @@ static int
> cpp_demangle_read_sname(struct cpp_demangle_data *ddata)
> {
> 	long len;
>+	int err;
> 
> 	if (ddata == NULL || cpp_demangle_read_number(ddata, &len) == 0 ||
>-	    len <= 0 || cpp_demangle_push_str(ddata, ddata->cur, len) == 0)
>+	    len <= 0)
>+		return (0);
>+
>+	if (len == 12 && (memcmp("_GLOBAL__N_1", ddata->cur, 12) == 0))
>+		err = cpp_demangle_push_str(ddata, "(anonymous namespace)", 21);
>+	else
>+		err = cpp_demangle_push_str(ddata, ddata->cur, len);
>+
>+	if (err == 0)
> 		return (0);
> 
> 	assert(ddata->output.size > 0);
>@@ -1732,8 +1999,7 @@ cpp_demangle_read_subst_std(struct cpp_demangle_data *ddata)
> 
> 	ddata->cur += 2;
> 
>-	output = cpp_demangle_gnu3_push_head > 0 ?
>-	    &ddata->output_tmp : &ddata->output;
>+	output = ddata->push_head > 0 ? &ddata->output_tmp : &ddata->output;
> 
> 	p_idx = output->size;
> 	if (!cpp_demangle_read_uqname(ddata))
>@@ -1783,8 +2049,7 @@ cpp_demangle_read_subst_stdtmpl(struct cpp_demangle_data *ddata,
> 	if (ddata == NULL || str == NULL || len == 0)
> 		return (0);
> 
>-	output = cpp_demangle_gnu3_push_head > 0 ? &ddata->output_tmp :
>-	    &ddata->output;
>+	output = ddata->push_head > 0 ? &ddata->output_tmp : &ddata->output;
> 
> 	p_idx = output->size;
> 	substr = NULL;
>@@ -1852,8 +2117,7 @@ cpp_demangle_read_tmpl_args(struct cpp_demangle_data *ddata)
> 		return (0);
> 
> 	limit = 0;
>-	v = cpp_demangle_gnu3_push_head > 0 ?
>-	    &ddata->output_tmp : &ddata->output;
>+	v = ddata->push_head > 0 ? &ddata->output_tmp : &ddata->output;
> 	for (;;) {
> 		idx = v->size;
> 		if (!cpp_demangle_read_tmpl_arg(ddata))
>@@ -1936,14 +2200,14 @@ cpp_demangle_read_type(struct cpp_demangle_data *ddata, int delimit)
> 	size_t p_idx, type_str_len;
> 	int extern_c, is_builtin;
> 	long len;
>-	char *type_str;
>+	char *type_str, *exp_str, *num_str;
> 
> 	if (ddata == NULL)
> 		return (0);
> 
> 	output = &ddata->output;
> 	if (!strncmp(ddata->output.container[ddata->output.size - 1], ">", 1)) {
>-		cpp_demangle_gnu3_push_head++;
>+		ddata->push_head++;
> 		output = &ddata->output_tmp;
> 	} else if (delimit == 1) {
> 		if (ddata->paren == false) {
>@@ -1978,7 +2242,7 @@ cpp_demangle_read_type(struct cpp_demangle_data *ddata, int delimit)
> 	extern_c = 0;
> 	is_builtin = 1;
> 	p_idx = output->size;
>-	type_str = NULL;
>+	type_str = exp_str = num_str = NULL;
> again:
> 	/* builtin type */
> 	switch (*ddata->cur) {
>@@ -2024,6 +2288,82 @@ again:
> 		++ddata->cur;
> 		goto rtn;
> 
>+	case 'D':
>+		++ddata->cur;
>+		switch (*ddata->cur) {
>+		case 'd':
>+			/* IEEE 754r decimal floating point (64 bits) */
>+			if (!cpp_demangle_push_str(ddata, "decimal64", 9))
>+				goto clean;
>+			++ddata->cur;
>+			break;
>+		case 'e':
>+			/* IEEE 754r decimal floating point (128 bits) */
>+			if (!cpp_demangle_push_str(ddata, "decimal128", 10))
>+				goto clean;
>+			++ddata->cur;
>+			break;
>+		case 'f':
>+			/* IEEE 754r decimal floating point (32 bits) */
>+			if (!cpp_demangle_push_str(ddata, "decimal32", 9))
>+				goto clean;
>+			++ddata->cur;
>+			break;
>+		case 'h':
>+			/* IEEE 754r half-precision floating point (16 bits) */
>+			if (!cpp_demangle_push_str(ddata, "half", 4))
>+				goto clean;
>+			++ddata->cur;
>+			break;
>+		case 'i':
>+			/* char32_t */
>+			if (!cpp_demangle_push_str(ddata, "char32_t", 8))
>+				goto clean;
>+			++ddata->cur;
>+			break;
>+		case 'n':
>+			/* std::nullptr_t (i.e., decltype(nullptr)) */
>+			if (!cpp_demangle_push_str(ddata, "decltype(nullptr)",
>+			    17))
>+				goto clean;
>+			++ddata->cur;
>+			break;
>+		case 's':
>+			/* char16_t */
>+			if (!cpp_demangle_push_str(ddata, "char16_t", 8))
>+				goto clean;
>+			++ddata->cur;
>+			break;
>+		case 'v':
>+			/* gcc vector_size extension. */
>+			++ddata->cur;
>+			if (*ddata->cur == '_') {
>+				++ddata->cur;
>+				if (!cpp_demangle_read_expression_flat(ddata,
>+				    &exp_str))
>+					goto clean;
>+				if (!vector_str_push(&v.ext_name, exp_str,
>+				    strlen(exp_str)))
>+					goto clean;
>+			} else {
>+				if (!cpp_demangle_read_number_as_string(ddata,
>+				    &num_str))
>+					goto clean;
>+				if (!vector_str_push(&v.ext_name, num_str,
>+				    strlen(num_str)))
>+					goto clean;
>+			}
>+			if (*ddata->cur != '_')
>+				goto clean;
>+			++ddata->cur;
>+			if (!vector_type_qualifier_push(&v, TYPE_VEC))
>+				goto clean;
>+			goto again;
>+		default:
>+			goto clean;
>+		}
>+		goto rtn;
>+
> 	case 'e':
> 		/* long double */
> 		if (!cpp_demangle_push_str(ddata, "long double", 11))
>@@ -2118,7 +2458,7 @@ again:
> 
> 	case 'o':
> 		/* unsigned __int128 */
>-		if (!cpp_demangle_push_str(ddata, "unsigned _;int128", 17))
>+		if (!cpp_demangle_push_str(ddata, "unsigned __int128", 17))
> 			goto clean;
> 		++ddata->cur;
> 		goto rtn;
>@@ -2189,6 +2529,8 @@ again:
> 		if (!vector_str_push(&v.ext_name, ddata->cur, len))
> 			return (0);
> 		ddata->cur += len;
>+		if (!vector_type_qualifier_push(&v, TYPE_EXT))
>+			goto clean;
> 		goto again;
> 
> 	case 'v':
>@@ -2253,14 +2595,16 @@ rtn:
> 		goto clean;
> 
> 	free(type_str);
>+	free(exp_str);
>+	free(num_str);
> 	vector_type_qualifier_dest(&v);
> 
>-	if (cpp_demangle_gnu3_push_head > 0) {
>+	if (ddata->push_head > 0) {
> 		if (*ddata->cur == 'I' && cpp_demangle_read_tmpl_args(ddata)
> 		    == 0)
> 			return (0);
> 
>-		if (--cpp_demangle_gnu3_push_head > 0)
>+		if (--ddata->push_head > 0)
> 			return (1);
> 
> 		if (!vector_str_push(&ddata->output_tmp, " ", 1))
>@@ -2284,11 +2628,45 @@ rtn:
> 	return (1);
> clean:
> 	free(type_str);
>+	free(exp_str);
>+	free(num_str);
> 	vector_type_qualifier_dest(&v);
> 
> 	return (0);
> }
> 
>+static int
>+cpp_demangle_read_type_flat(struct cpp_demangle_data *ddata, char **str)
>+{
>+	struct vector_str *output;
>+	size_t i, p_idx, idx, type_len;
>+	char *type;
>+
>+	output = ddata->push_head > 0 ? &ddata->output_tmp :
>+	    &ddata->output;
>+
>+	p_idx = output->size;
>+
>+	if (!cpp_demangle_read_type(ddata, 0))
>+		return (0);
>+
>+	if ((type = vector_str_substr(output, p_idx, output->size - 1,
>+	    &type_len)) == NULL)
>+		return (0);
>+
>+	idx = output->size;
>+	for (i = p_idx; i < idx; ++i) {
>+		if (!vector_str_pop(output)) {
>+			free(type);
>+			return (0);
>+		}
>+	}
>+
>+	*str = type;
>+
>+	return (1);
>+}
>+
> /*
>  * read unqualified-name, unqualified name are operator-name, ctor-dtor-name,
>  * source-name
>diff --git a/contrib/elftoolchain/libelftc/os.Linux.mk b/contrib/elftoolchain/libelftc/os.Linux.mk
>index 9730bf6..7978005 100644
>--- a/contrib/elftoolchain/libelftc/os.Linux.mk
>+++ b/contrib/elftoolchain/libelftc/os.Linux.mk
>@@ -1,3 +1,3 @@
> # $Id: os.Linux.mk 994 2010-06-13 10:39:19Z jkoshy $
> 
>-CFLAGS+=	-Wall
>+CFLAGS+=	-Wall -D_GNU_SOURCE
>diff --git a/contrib/elftoolchain/readelf/readelf.1 b/contrib/elftoolchain/readelf/readelf.1
>index a71e85f..09e279173 100644
>--- a/contrib/elftoolchain/readelf/readelf.1
>+++ b/contrib/elftoolchain/readelf/readelf.1
>@@ -90,7 +90,7 @@ sections in the ELF object.
> .It Fl e | Fl -headers
> Print all program, file and section headers in the ELF object.
> .It Fl g | Fl -section-groups
>-This option is recognized, but is ignored.
>+Print the contents of the section groups in the ELF object.
> .It Fl h | Fl -file-header
> Print the file header of the ELF object.
> .It Fl l | Fl -program-headers
>diff --git a/contrib/elftoolchain/readelf/readelf.c b/contrib/elftoolchain/readelf/readelf.c
>index 29bc389..71e100e 100644
>--- a/contrib/elftoolchain/readelf/readelf.c
>+++ b/contrib/elftoolchain/readelf/readelf.c
>@@ -1,5 +1,5 @@
> /*-
>- * Copyright (c) 2009-2014 Kai Wang
>+ * Copyright (c) 2009-2015 Kai Wang
>  * All rights reserved.
>  *
>  * Redistribution and use in source and binary forms, with or without
>@@ -302,6 +302,7 @@ static void dump_gnu_hash(struct readelf *re, struct section *s);
> static void dump_hash(struct readelf *re);
> static void dump_phdr(struct readelf *re);
> static void dump_ppc_attributes(uint8_t *p, uint8_t *pe);
>+static void dump_section_groups(struct readelf *re);
> static void dump_symtab(struct readelf *re, int i);
> static void dump_symtabs(struct readelf *re);
> static uint8_t *dump_unknown_tag(uint64_t tag, uint8_t *p);
>@@ -445,6 +446,7 @@ elf_machine(unsigned int mach)
> 	case EM_SPARC: return "Sun SPARC";
> 	case EM_386: return "Intel i386";
> 	case EM_68K: return "Motorola 68000";
>+	case EM_IAMCU: return "Intel MCU";
> 	case EM_88K: return "Motorola 88000";
> 	case EM_860: return "Intel i860";
> 	case EM_MIPS: return "MIPS R3000 Big-Endian only";
>@@ -1050,6 +1052,7 @@ r_type(unsigned int mach, unsigned int type)
> 	switch(mach) {
> 	case EM_NONE: return "";
> 	case EM_386:
>+	case EM_IAMCU:
> 		switch(type) {
> 		case 0: return "R_386_NONE";
> 		case 1: return "R_386_32";
>@@ -2381,6 +2384,7 @@ dwarf_reg(unsigned int mach, unsigned int reg)
> 
> 	switch (mach) {
> 	case EM_386:
>+	case EM_IAMCU:
> 		switch (reg) {
> 		case 0: return "eax";
> 		case 1: return "ecx";
>@@ -4047,6 +4051,58 @@ dump_liblist(struct readelf *re)
> 
> #undef Elf_Lib
> 
>+static void
>+dump_section_groups(struct readelf *re)
>+{
>+	struct section *s;
>+	const char *symname;
>+	Elf_Data *d;
>+	uint32_t *w;
>+	int i, j, elferr;
>+	size_t n;
>+
>+	for (i = 0; (size_t) i < re->shnum; i++) {
>+		s = &re->sl[i];
>+		if (s->type != SHT_GROUP)
>+			continue;
>+		(void) elf_errno();
>+		if ((d = elf_getdata(s->scn, NULL)) == NULL) {
>+			elferr = elf_errno();
>+			if (elferr != 0)
>+				warnx("elf_getdata failed: %s",
>+				    elf_errmsg(elferr));
>+			continue;
>+		}
>+		if (d->d_size <= 0)
>+			continue;
>+
>+		w = d->d_buf;
>+
>+		/* We only support COMDAT section. */
>+		if ((*w++ & GRP_COMDAT) == 0)
>+			return;
>+
>+		if (s->entsize == 0)
>+			s->entsize = 4;
>+
>+		symname = get_symbol_name(re, s->link, s->info);
>+		n = s->sz / s->entsize;
>+		if (n-- < 1)
>+			return;
>+
>+		printf("\nCOMDAT group section [%5d] `%s' [%s] contains %ju"
>+		    " sections:\n", i, s->name, symname, n);
>+		printf("   %-10.10s %s\n", "[Index]", "Name");
>+		for (j = 0; (size_t) j < n; j++, w++) {
>+			if (*w >= re->shnum) {
>+				warnx("invalid section index: %u", *w);
>+				continue;
>+			}
>+			printf("   [%5u]   %s\n", *w, re->sl[*w].name);
>+		}
>+	}
>+}
>+
> static uint8_t *
> dump_unknown_tag(uint64_t tag, uint8_t *p)
> {
>@@ -6838,6 +6894,8 @@ dump_elf(struct readelf *re)
> 		dump_phdr(re);
> 	if (re->options & RE_SS)
> 		dump_shdr(re);
>+	if (re->options & RE_G)
>+		dump_section_groups(re);
> 	if (re->options & RE_D)
> 		dump_dynamic(re);
> 	if (re->options & RE_R)
>@@ -7311,7 +7369,7 @@ Usage: %s [options] file...\n\
>   -c | --archive-index     Print the archive symbol table for archives.\n\
>   -d | --dynamic           Print the contents of SHT_DYNAMIC sections.\n\
>   -e | --headers           Print all headers in the object.\n\
>-  -g | --section-groups    (accepted, but ignored)\n\
>+  -g | --section-groups    Print the contents of the section groups.\n\
>   -h | --file-header       Print the file header for the object.\n\
>   -l | --program-headers   Print the PHDR table for the object.\n\
>   -n | --notes             Print the contents of SHT_NOTE sections.\n\
>@@ -7365,8 +7423,8 @@ main(int argc, char **argv)
> 			re->options |= RE_AA;
> 			break;
> 		case 'a':
>-			re->options |= RE_AA | RE_D | RE_H | RE_II | RE_L |
>-			    RE_R | RE_SS | RE_S | RE_VV;
>+			re->options |= RE_AA | RE_D | RE_G | RE_H | RE_II |
>+			    RE_L | RE_R | RE_SS | RE_S | RE_VV;
> 			break;
> 		case 'c':
> 			re->options |= RE_C;
>diff --git a/lib/libelftc/elftc_version.c b/lib/libelftc/elftc_version.c
>index fb0a731..ab11320 100644
>--- a/lib/libelftc/elftc_version.c
>+++ b/lib/libelftc/elftc_version.c
>@@ -6,5 +6,5 @@
> const char *
> elftc_version(void)
> {
>-	return "elftoolchain r3197M";
>+	return "elftoolchain r3222M";
> }

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Attachments on bug 198611: 154393 | 155564 | 156881 | 157132 | 157135 | 157136 | 157201