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[Bug other/59927] [4.9 Regression] ICE sorry, unimplemented: ms_abi attribute requires -maccumulate-outgoing-args or subtarget optimization implying it
- From: "ktietz at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Thu, 23 Jan 2014 21:46:32 +0000
- Subject: [Bug other/59927] [4.9 Regression] ICE sorry, unimplemented: ms_abi attribute requires -maccumulate-outgoing-args or subtarget optimization implying it
- Auto-submitted: auto-generated
- References: <bug-59927-4 at http dot gcc dot gnu dot org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59927
--- Comment #3 from Kai Tietz <ktietz at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #2)
> 0x14cdc97 add_file_to_cache_tab
> /home/marek/src/gcc/gcc/input.c:296
>
> That's unrelated segfault,
> http://gcc.gnu.org/ml/gcc-patches/2014-01/msg01514.html
>
> Supposedly ms_abi attribute, if accumulate_outgoing_args isn't set, could
> just implicitly add target ("accumulate-outgoing-args")? Or what is the
> reason why ms_abi doesn't support it?
That might be a way. ACCUMULATE_OUTGOING_ARGS has to be set for ABI do
resevered stack-area. On windows 64-bit we have additionally the problem that
drap-register can't be expressed in SEH-block (unwind information), and so to
turn it off is violating the ABI.