http://sourceware.org/bugzilla/show_bug.cgi?id=12161
Pitchumani <pitchumani.s at atmel dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |pitchumani.s at atmel dot
| |com
--- Comment #8 from Pitchumani <pitchumani.s at atmel dot com> 2012-01-04
12:49:51 UTC ---
(In reply to comment #7)
> Hi Guys,
>
> I have decided to go ahead and check this patch in. Please reopen this PR
> if
> the problem resurfaces.
>
> Cheers
> Nick
Hi Nick,
Function 'elf32_avr_check_relocs(elf32-avr.c)' is referred in elflink.c:4801
(-- snip from elflink.c --)
4799 if (! dynamic
4800 && is_elf_hash_table (htab)
4801 && bed->check_relocs != NULL
4802 && elf_object_id (abfd) == elf_hash_table_id (htab)
4803 && (*bed->relocs_compatible) (abfd->xvec, info->output_bfd->xvec))
(-- snip end --)
As 'bed->check_relocs' is NULL in 2.22, code that follows this check not
executed.
This caused a segmentation fault (NULL pointer access) in elf32-avr.c:1528.
Test case:
-- c source --
void func2(int a) { }
void func1(void)
{
func2(10);
}
int main(void)
{
func1();
}
-- c source --
command line options:
avr-gcc segfault.c -ffunction-sections -mmcu=atmega128 -c -o segfault.o
avr-ld segfault.o -m avr51 -relax
Please correct if I am missing something.
Thanks,
Pitchumani
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