On Thu, Mar 21, 2013 at 09:23:34PM +0100, Mark Wielaard wrote:
> The following change
>
> 2012-05-03 Jason Merrill <ja...@redhat.com>
>
> * config/i386/i386.c (ix86_code_end): Set DECL_IGNORED_P on the
> pc thunk.
> * dwarf2out.c (output_aranges): Skip DECL_IGNORED_P functions.
> (dwarf2out_finish): Likewise.
>
> caused the length field of a debug aranges table to sometimes be too
> big. This causes DWARF readers that rely on the length field (dwz/binutils)
> and not just on the terminator of the table (elfutils) to read the wrong
> values on subsequent aranges tables.
>
> This can be fixed by making the same change in size_of_aranges:
>
> 2013-03-21 Mark Wielaard <m...@redhat.com>
>
> * dwarf2out.c (size_of_aranges): Skip DECL_IGNORED_P functions.
This is ok for trunk and 4.8. Thanks.
> diff --git a/gcc/dwarf2out.c b/gcc/dwarf2out.c
> index 9be7728..b298cd9 100644
> --- a/gcc/dwarf2out.c
> +++ b/gcc/dwarf2out.c
> @@ -7848,6 +7848,8 @@ size_of_aranges (void)
>
> FOR_EACH_VEC_ELT (*fde_vec, fde_idx, fde)
> {
> + if (DECL_IGNORED_P (fde->decl))
> + continue;
> if (!fde->in_std_section)
> size += 2 * DWARF2_ADDR_SIZE;
> if (fde->dw_fde_second_begin && !fde->second_in_std_section)
Jakub
