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Support reading binaries that do not have a symbol table

Browse Source 
* src/abg-dwarf-reader.cc
	(read_context::find_symbol_table_section): Allow returning a nil
	pointer to symbol table.
	(read_context::lookup_elf_symbol_from_index): Return an empty elf
	symbol if we got a nil pointer to symbol table.
	(read_context::load_symbol_maps): If no symbol table is found then
	consider that the symbol maps loading failed.

Signed-off-by: Dodji Seketeli <dodji@redhat.com>
This commit is contained in:
Dodji Seketeli 2015-07-16 11:01:11 +02:00
parent f154ff8db1
commit d05a473e74
1 changed files with 4 additions and 3 deletions
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7
src/abg-dwarf-reader.cc
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@ -2508,7 +2508,6 @@ public:
{
if (!symtab_section_)
dwarf_reader::find_symbol_table_section(elf_handle(), symtab_section_);
assert(symtab_section_);
return symtab_section_;
}
@ -2647,7 +2646,8 @@ public:
lookup_elf_symbol_from_index(size_t symbol_index)
{
Elf_Scn* symtab_section = find_symbol_table_section();
assert(symtab_section);
if (!symtab_section)
return elf_symbol_sptr();
GElf_Shdr header_mem;
GElf_Shdr* symtab_sheader = gelf_getshdr(symtab_section,
@ -3078,7 +3078,8 @@ public:
undefined_var_syms_.reset(new string_elf_symbols_map_type);
Elf_Scn* symtab_section = find_symbol_table_section();
assert(symtab_section);
if (!symtab_section)
return false;
GElf_Shdr header_mem;
GElf_Shdr* symtab_sheader = gelf_getshdr(symtab_section,