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Report an error on invalid sh_entsize.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241070 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola
2015-06-30 14:59:20 +00:00
parent f8b3b92eb8
commit e8ff062325
3 changed files with 43 additions and 8 deletions
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19
include/llvm/Object/ELF.h
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@@ -285,17 +285,18 @@ public:
}
const Elf_Sym *begin_dynamic_symbols() const {
if (DynSymRegion.Addr)
return reinterpret_cast<const Elf_Sym *>(DynSymRegion.Addr);
return nullptr;
if (!DynSymRegion.Addr)
return nullptr;
if (DynSymRegion.EntSize != sizeof(Elf_Sym))
report_fatal_error("Invalid symbol size");
return reinterpret_cast<const Elf_Sym *>(DynSymRegion.Addr);
}
const Elf_Sym *end_dynamic_symbols() const {
if (DynSymRegion.Addr)
return reinterpret_cast<const Elf_Sym *>(
((const char *)DynSymRegion.Addr + DynSymRegion.Size));
return nullptr;
if (!DynSymRegion.Addr)
return nullptr;
return reinterpret_cast<const Elf_Sym *>(
((const char *)DynSymRegion.Addr + DynSymRegion.Size));
}
Elf_Sym_Range dynamic_symbols() const {
@@ -766,6 +767,8 @@ template <class ELFT>
const typename ELFFile<ELFT>::Elf_Sym *ELFFile<ELFT>::begin_symbols() const {
if (!dot_symtab_sec)
return nullptr;
if (dot_symtab_sec->sh_entsize != sizeof(Elf_Sym))
report_fatal_error("Invalid symbol size");
return reinterpret_cast<const Elf_Sym *>(base() + dot_symtab_sec->sh_offset);
}