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* [Bug modula2/108553] New: GM2 ICEs on mistyped command line options
@ 2023-01-26 8:29 rguenth at gcc dot gnu.org
2023-01-26 8:32 ` [Bug modula2/108553] " rguenth at gcc dot gnu.org
` (7 more replies)
0 siblings, 8 replies; 9+ messages in thread
From: rguenth at gcc dot gnu.org @ 2023-01-26 8:29 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108553
Bug ID: 108553
Summary: GM2 ICEs on mistyped command line options
Product: gcc
Version: 13.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: modula2
Assignee: gaius at gcc dot gnu.org
Reporter: rguenth at gcc dot gnu.org
Target Milestone: ---
When mistyping -Wreturn-type as -Wereturn-type the compiler ICEs because
we segfault in
#5 0x0000000000c19cfd in gm2_langhook_init_options (decoded_options_count=7,
decoded_options=0x429a190)
at /home/rguenther/src/trunk/gcc/m2/gm2-lang.cc:296
296 fprintf(stderr, "%s : %s\n", opt, (arg ? arg : ""));
(gdb) l
291 /* FALLTHROUGH */
292 default:
293 if (code >= N_OPTS)
294 {
295 // FIXME remove debug.
296 fprintf(stderr, "%s : %s\n", opt, (arg ? arg : ""));
297 break;
298 }
299 /* Do not pass Modula-2 args to the preprocessor, any that we
care
300 about here should already have been handled above. */
(gdb) p opt
$2 = 0x6874616d5f656661 <error: Cannot access memory at address
0x6874616d5f656661>
Note code is OPT_SPECIAL_unknown here.
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug modula2/108553] GM2 ICEs on mistyped command line options
2023-01-26 8:29 [Bug modula2/108553] New: GM2 ICEs on mistyped command line options rguenth at gcc dot gnu.org
@ 2023-01-26 8:32 ` rguenth at gcc dot gnu.org
2023-01-26 8:38 ` iains at gcc dot gnu.org
` (6 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: rguenth at gcc dot gnu.org @ 2023-01-26 8:32 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108553
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |iains at gcc dot gnu.org
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
diagnosing options in gm2_langhook_init_options is probably not the way to go.
Looks like this creeped in by recent refactoring?
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug modula2/108553] GM2 ICEs on mistyped command line options
2023-01-26 8:29 [Bug modula2/108553] New: GM2 ICEs on mistyped command line options rguenth at gcc dot gnu.org
2023-01-26 8:32 ` [Bug modula2/108553] " rguenth at gcc dot gnu.org
@ 2023-01-26 8:38 ` iains at gcc dot gnu.org
2023-01-26 9:10 ` iains at gcc dot gnu.org
` (5 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: iains at gcc dot gnu.org @ 2023-01-26 8:38 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108553
--- Comment #2 from Iain Sandoe <iains at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #1)
> diagnosing options in gm2_langhook_init_options is probably not the way to
> go.
>
> Looks like this creeped in by recent refactoring?
Yeah, there is no intention to diagnose options here, that was debugging code
that was not removed.
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug modula2/108553] GM2 ICEs on mistyped command line options
2023-01-26 8:29 [Bug modula2/108553] New: GM2 ICEs on mistyped command line options rguenth at gcc dot gnu.org
2023-01-26 8:32 ` [Bug modula2/108553] " rguenth at gcc dot gnu.org
2023-01-26 8:38 ` iains at gcc dot gnu.org
@ 2023-01-26 9:10 ` iains at gcc dot gnu.org
2023-01-26 9:46 ` marxin at gcc dot gnu.org
` (4 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: iains at gcc dot gnu.org @ 2023-01-26 9:10 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108553
--- Comment #3 from Iain Sandoe <iains at gcc dot gnu.org> ---
I'm trying to reproduce this - in the meantime does the obvious fix solve the
problem for you?
diff --cc gcc/m2/gm2-lang.cc
index 4d9cae205a7,4d9cae205a7..a30e626620c
--- a/gcc/m2/gm2-lang.cc
+++ b/gcc/m2/gm2-lang.cc
@@@ -290,12 -290,12 +290,9 @@@ gm2_langhook_init_options (unsigned in
M2Options_SetVerbose (value);
/* FALLTHROUGH */
default:
++ /* We handled input files above. */
if (code >= N_OPTS)
-- {
-- // FIXME remove debug.
-- fprintf(stderr, "%s : %s\n", opt, (arg ? arg : ""));
-- break;
-- }
++ break;
/* Do not pass Modula-2 args to the preprocessor, any that we care
about here should already have been handled above. */
if (option->flags & CL_ModulaX2)
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug modula2/108553] GM2 ICEs on mistyped command line options
2023-01-26 8:29 [Bug modula2/108553] New: GM2 ICEs on mistyped command line options rguenth at gcc dot gnu.org
` (2 preceding siblings ...)
2023-01-26 9:10 ` iains at gcc dot gnu.org
@ 2023-01-26 9:46 ` marxin at gcc dot gnu.org
2023-01-26 12:47 ` rguenth at gcc dot gnu.org
` (3 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: marxin at gcc dot gnu.org @ 2023-01-26 9:46 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108553
Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Ever confirmed|0 |1
CC| |marxin at gcc dot gnu.org
Last reconfirmed| |2023-01-26
Status|UNCONFIRMED |NEW
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug modula2/108553] GM2 ICEs on mistyped command line options
2023-01-26 8:29 [Bug modula2/108553] New: GM2 ICEs on mistyped command line options rguenth at gcc dot gnu.org
` (3 preceding siblings ...)
2023-01-26 9:46 ` marxin at gcc dot gnu.org
@ 2023-01-26 12:47 ` rguenth at gcc dot gnu.org
2023-01-26 16:30 ` cvs-commit at gcc dot gnu.org
` (2 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: rguenth at gcc dot gnu.org @ 2023-01-26 12:47 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108553
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Iain Sandoe from comment #3)
> I'm trying to reproduce this - in the meantime does the obvious fix solve
> the problem for you?
>
> diff --cc gcc/m2/gm2-lang.cc
> index 4d9cae205a7,4d9cae205a7..a30e626620c
> --- a/gcc/m2/gm2-lang.cc
> +++ b/gcc/m2/gm2-lang.cc
> @@@ -290,12 -290,12 +290,9 @@@ gm2_langhook_init_options (unsigned in
> M2Options_SetVerbose (value);
> /* FALLTHROUGH */
> default:
> ++ /* We handled input files above. */
> if (code >= N_OPTS)
> -- {
> -- // FIXME remove debug.
> -- fprintf(stderr, "%s : %s\n", opt, (arg ? arg : ""));
> -- break;
> -- }
> ++ break;
> /* Do not pass Modula-2 args to the preprocessor, any that we care
> about here should already have been handled above. */
> if (option->flags & CL_ModulaX2)
Yes, that fixes the ICE and produces
cc1gm2: error: unrecognized command-line option '-Wereturn-type'
btw, the 'opt' variable is unused after the removal
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug modula2/108553] GM2 ICEs on mistyped command line options
2023-01-26 8:29 [Bug modula2/108553] New: GM2 ICEs on mistyped command line options rguenth at gcc dot gnu.org
` (4 preceding siblings ...)
2023-01-26 12:47 ` rguenth at gcc dot gnu.org
@ 2023-01-26 16:30 ` cvs-commit at gcc dot gnu.org
2023-01-27 7:44 ` rguenth at gcc dot gnu.org
2023-01-27 8:45 ` iains at gcc dot gnu.org
7 siblings, 0 replies; 9+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2023-01-26 16:30 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108553
--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Iain D Sandoe <iains@gcc.gnu.org>:
https://gcc.gnu.org/g:6dd4578f4779b27b2115d78226ff7df46c939061
commit r13-5398-g6dd4578f4779b27b2115d78226ff7df46c939061
Author: Iain Sandoe <iain@sandoe.co.uk>
Date: Thu Jan 26 09:46:32 2023 +0000
Modula-2: Remove debug code [PR108553].
Remove debugging code accidentally left in place in
r13-5373-g80cf2c5e8f496b.
Signed-off-by: Iain Sandoe <iain@sandoe.co.uk>
PR modula2/108553
gcc/m2/ChangeLog:
* gm2-lang.cc (gm2_langhook_init_options): Remove debug code.
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug modula2/108553] GM2 ICEs on mistyped command line options
2023-01-26 8:29 [Bug modula2/108553] New: GM2 ICEs on mistyped command line options rguenth at gcc dot gnu.org
` (5 preceding siblings ...)
2023-01-26 16:30 ` cvs-commit at gcc dot gnu.org
@ 2023-01-27 7:44 ` rguenth at gcc dot gnu.org
2023-01-27 8:45 ` iains at gcc dot gnu.org
7 siblings, 0 replies; 9+ messages in thread
From: rguenth at gcc dot gnu.org @ 2023-01-27 7:44 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108553
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |FIXED
Status|NEW |RESOLVED
--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to CVS Commits from comment #5)
> The master branch has been updated by Iain D Sandoe <iains@gcc.gnu.org>:
>
> https://gcc.gnu.org/g:6dd4578f4779b27b2115d78226ff7df46c939061
>
> commit r13-5398-g6dd4578f4779b27b2115d78226ff7df46c939061
> Author: Iain Sandoe <iain@sandoe.co.uk>
> Date: Thu Jan 26 09:46:32 2023 +0000
>
> Modula-2: Remove debug code [PR108553].
>
> Remove debugging code accidentally left in place in
> r13-5373-g80cf2c5e8f496b.
>
> Signed-off-by: Iain Sandoe <iain@sandoe.co.uk>
>
> PR modula2/108553
>
> gcc/m2/ChangeLog:
>
> * gm2-lang.cc (gm2_langhook_init_options): Remove debug code.
You should now see an unused variable diagnostic about 'opt', but the ICE is
gone. Thanks.
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug modula2/108553] GM2 ICEs on mistyped command line options
2023-01-26 8:29 [Bug modula2/108553] New: GM2 ICEs on mistyped command line options rguenth at gcc dot gnu.org
` (6 preceding siblings ...)
2023-01-27 7:44 ` rguenth at gcc dot gnu.org
@ 2023-01-27 8:45 ` iains at gcc dot gnu.org
7 siblings, 0 replies; 9+ messages in thread
From: iains at gcc dot gnu.org @ 2023-01-27 8:45 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108553
--- Comment #7 from Iain Sandoe <iains at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #6)
> (In reply to CVS Commits from comment #5)
> > The master branch has been updated by Iain D Sandoe <iains@gcc.gnu.org>:
>
> You should now see an unused variable diagnostic about 'opt', but the ICE is
> gone. Thanks.
Hmm that's surprising 'opt' is used in several calls like so:
M2Options_CppArg (opt, arg, (option->flags & CL_JOINED)
&& !(option->flags & CL_SEPARATE));
I wonder what is causing that diagnostic?
(bootstrap succeeded for me without disabling Werror .. so it does not seem to
show on Darwin)
^ permalink raw reply [flat|nested] 9+ messages in thread
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2023-01-26 8:29 [Bug modula2/108553] New: GM2 ICEs on mistyped command line options rguenth at gcc dot gnu.org
2023-01-26 8:32 ` [Bug modula2/108553] " rguenth at gcc dot gnu.org
2023-01-26 8:38 ` iains at gcc dot gnu.org
2023-01-26 9:10 ` iains at gcc dot gnu.org
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