[Bug c/107156] New: ice in lookup_attribute_by_prefix, at attribs.h:239

[Bug c/107156] New: ice in lookup_attribute_by_prefix, at attribs.h:239

[dcb314 at hotmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107156

            Bug ID: 107156
           Summary: ice in lookup_attribute_by_prefix, at attribs.h:239
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: dcb314 at hotmail dot com
  Target Milestone: ---

For testsuite file ./gcc.dg/c2x-attr-noreturn-1.c, with recent gcc, I get this:

[/home/dcb/gcc/trunk.git/gcc/testsuite] $ /home/dcb/gcc/results/bin/gcc -c -w
-O2 ./gcc.dg/c2x-attr-noreturn-1.c
during IPA pass: icf
./gcc.dg/c2x-attr-noreturn-1.c:56:1: internal compiler error: in
lookup_attribute_by_prefix, at attribs.h:239
   56 | [[noreturn]] int main ();
      | ^
0x1bd9afe lookup_attribute_by_prefix(char const*, tree_node*)
        ../../trunk.git/gcc/attribs.h:239

Please not I am not using any -std= flag.

The bug first seems to occur sometime between git hash f758d447d7f46992
and 43faf3e5445b5717, which is about 50 commits.

[Bug c/107156] ice in lookup_attribute_by_prefix, at attribs.h:239

[dcb314 at hotmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107156

David Binderman <dcb314 at hotmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |joseph at codesourcery dot com

--- Comment #1 from David Binderman <dcb314 at hotmail dot com> ---
Looking at the list of commits, I add the author of the code.

[Bug c/107156] ice in lookup_attribute_by_prefix, at attribs.h:239

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107156

Martin Liška <marxin at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
   Last reconfirmed|                            |2022-10-05
             Status|UNCONFIRMED                 |ASSIGNED
           Assignee|unassigned at gcc dot gnu.org      |marxin at gcc dot gnu.org
                 CC|                            |marxin at gcc dot gnu.org

--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
Started with r13-2976-g3a3516bc4a0a0307, anyway, I'm going to fix it as it
comes from IPA ICF pass.

[Bug c/107156] ICE in lookup_attribute_by_prefix, at attribs.h:239 since r13-2976-g3a3516bc4a0a0307

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107156

Martin Liška <marxin at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |patch

--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
Patch candidate:
https://gcc.gnu.org/pipermail/gcc-patches/2022-October/602860.html

[Bug c/107156] ICE in lookup_attribute_by_prefix, at attribs.h:239 since r13-2976-g3a3516bc4a0a0307

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107156

Martin Liška <marxin at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |13.0

[Bug c/107156] ICE in lookup_attribute_by_prefix, at attribs.h:239 since r13-2976-g3a3516bc4a0a0307

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107156

--- Comment #4 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Martin Liska <marxin@gcc.gnu.org>:

https://gcc.gnu.org/g:0afa9dfb8fb3302db7f104add5654436927dcb56

commit r13-3088-g0afa9dfb8fb3302db7f104add5654436927dcb56
Author: Martin Liska <mliska@suse.cz>
Date:   Wed Oct 5 12:34:30 2022 +0200

    c: support the attribute starting with '_'

            PR c/107156

    gcc/ChangeLog:

            * attribs.h (lookup_attribute_by_prefix): Support the attribute
            starting with underscore (_Noreturn).

[Bug c/107156] ICE in lookup_attribute_by_prefix, at attribs.h:239 since r13-2976-g3a3516bc4a0a0307

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107156

Martin Liška <marxin at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
             Status|ASSIGNED                    |RESOLVED

--- Comment #5 from Martin Liška <marxin at gcc dot gnu.org> ---
Fixed.