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2005-05-18 H.J. Lu <hongjiu.lu@intel.com>

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* elf.c (group_signature): Check if the symbol table section is
	correct.
This commit is contained in:
H.J. Lu
2005-05-18 13:41:59 +00:00
parent a0ef61f7a0
commit 13792e9d85
2 changed files with 10 additions and 17 deletions
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5
bfd/ChangeLog
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@ -1,3 +1,8 @@
2005-05-18 H.J. Lu <hongjiu.lu@intel.com>
* elf.c (group_signature): Undo the last change. Check if the
symbol table section is correct.
2005-05-17 Zack Weinberg <zack@codesourcery.com> 2005-05-17 Zack Weinberg <zack@codesourcery.com>
* elf32-arm.c: Wherever possible, use official reloc names * elf32-arm.c: Wherever possible, use official reloc names

22
bfd/elf.c
View File

@ -451,24 +451,12 @@ group_signature (bfd *abfd, Elf_Internal_Shdr *ghdr)
unsigned char esym[sizeof (Elf64_External_Sym)]; unsigned char esym[sizeof (Elf64_External_Sym)];
Elf_External_Sym_Shndx eshndx; Elf_External_Sym_Shndx eshndx;
Elf_Internal_Sym isym; Elf_Internal_Sym isym;
unsigned int i;
if (ghdr == NULL) /* First we need to ensure the symbol table is available. Make sure
return NULL; that it is a symbol table section. */
hdr = elf_elfsections (abfd) [ghdr->sh_link];
/* If this section is linked to by other sections then it is a symbol or if (hdr->sh_type != SHT_SYMTAB
string section which is masquerading as a group. This is a bad thing, || ! bfd_section_from_shdr (abfd, ghdr->sh_link))
and if we carry on to the call to bfd_section_from_shdr below we will
enter an infinite loop. So check now and break out if we detect this
case. See:
http://sources.redhat.com/ml/binutils/2005-05/msg00421.html
for a report of a case that tirggers this code. */
for (i = elf_numsections (abfd); i--;)
if (elf_elfsections (abfd) [elf_elfsections (abfd) [i]->sh_link] == ghdr)
return NULL;
/* Next we need to ensure the symbol table is available. */
if (! bfd_section_from_shdr (abfd, ghdr->sh_link))
return NULL; return NULL;
/* Go read the symbol. */ /* Go read the symbol. */