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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug modula2/108553] GM2 ICEs on mistyped command line options
Date: Thu, 26 Jan 2023 12:47:35 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D108553

--- 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?
>=20
> 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 >=3D 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 c=
are
>              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=