http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48459
--- Comment #10 from Anitha Boyapati <anitha.boyapati at atmel dot com>
2011-06-10 07:37:19 UTC ---
(In reply to comment #9)
> (In reply to comment #8)
> > I agree. But this does not fully solve the problem either.
> > INCOMING_RETURN_ADDR_RTX is being defined in dwarf2out.c to
> > gcc_unreachable()
> > :-(
>
> Why is initial_return_save still being called? My patch should prevent
> debug_unwind_info from returning UI_DWARF2.
Preprocessed output of default_debug_unwind_info()
enum unwind_info_type
default_debug_unwind_info (void)
{
# 1356 "../../gcc/targhooks.c"
return UI_NONE;
}
I don't think initial_return_save() is called now. It passes the compilation
there but gets struck in other places. I think it is because
INCOMING_RETURN_ADDR_RTX is now seen as defined and hence CFI info is emitted.
But this runs into trouble because the above hook is gcc_unreachable().
