[Bug middle-end/104885] New: ICE in compiling new test case g++.dg/other/pr84964.C after r12-7607-ga717376e99fb33

[Bug middle-end/104885] New: ICE in compiling new test case g++.dg/other/pr84964.C after r12-7607-ga717376e99fb33

[seurer at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104885

            Bug ID: 104885
           Summary: ICE in compiling new test case g++.dg/other/pr84964.C
                    after r12-7607-ga717376e99fb33
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
          Assignee: unassigned at gcc dot gnu.org
          Reporter: seurer at gcc dot gnu.org
  Target Milestone: ---

Tried g:a717376e99fb33ba3b06bd8122e884f4b63a60c9, r12-7607-ga717376e99fb33
make  -k check-gcc RUNTESTFLAGS="dg.exp=g++.dg/other/pr84964.C"
FAIL: g++.dg/other/pr84964.C  -std=c++98 (internal compiler error: Aborted
signal terminated program cc1plus)
FAIL: g++.dg/other/pr84964.C  -std=c++98  (test for warnings, line 6)
FAIL: g++.dg/other/pr84964.C  -std=c++98  1 blank line(s) in output
FAIL: g++.dg/other/pr84964.C  -std=c++98 (test for excess errors)
FAIL: g++.dg/other/pr84964.C  -std=c++14 (internal compiler error: Aborted
signal terminated program cc1plus)
FAIL: g++.dg/other/pr84964.C  -std=c++14  (test for warnings, line 6)
FAIL: g++.dg/other/pr84964.C  -std=c++14  1 blank line(s) in output
FAIL: g++.dg/other/pr84964.C  -std=c++14 (test for excess errors)
FAIL: g++.dg/other/pr84964.C  -std=c++17 (internal compiler error: Segmentation
fault signal terminated program cc1plus)
FAIL: g++.dg/other/pr84964.C  -std=c++17  (test for warnings, line 6)
FAIL: g++.dg/other/pr84964.C  -std=c++17 (test for excess errors)
FAIL: g++.dg/other/pr84964.C  -std=c++20 (internal compiler error: Segmentation
fault signal terminated program cc1plus)
FAIL: g++.dg/other/pr84964.C  -std=c++20  (test for warnings, line 6)
FAIL: g++.dg/other/pr84964.C  -std=c++20 (test for excess errors)


commit a717376e99fb33ba3b06bd8122e884f4b63a60c9 (HEAD, refs/bisect/bad)
Author: Roger Sayle <roger@nextmovesoftware.com>
Date:   Thu Mar 10 23:49:15 2022 +0000

    PR c++/84964: Middle-end patch to expand_call for ICE after sorry.

[Bug middle-end/104885] ICE in compiling new test case g++.dg/other/pr84964.C after r12-7607-ga717376e99fb33

[roger at nextmovesoftware dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104885

Roger Sayle <roger at nextmovesoftware dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
   Last reconfirmed|                            |2022-03-12
                 CC|                            |roger at nextmovesoftware dot com
             Status|UNCONFIRMED                 |ASSIGNED
           Assignee|unassigned at gcc dot gnu.org      |roger at nextmovesoftware dot com

--- Comment #1 from Roger Sayle <roger at nextmovesoftware dot com> ---
Patch proposed.
https://gcc.gnu.org/pipermail/gcc-patches/2022-March/591665.html

[Bug middle-end/104885] ICE in compiling new test case g++.dg/other/pr84964.C after r12-7607-ga717376e99fb33

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104885

--- Comment #2 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Roger Sayle <sayle@gcc.gnu.org>:

https://gcc.gnu.org/g:41d1f11f5f693a2a06c65c9467a28dfeb02aed85

commit r12-7833-g41d1f11f5f693a2a06c65c9467a28dfeb02aed85
Author: Roger Sayle <roger@nextmovesoftware.com>
Date:   Sat Mar 26 08:10:27 2022 -1000

    PR middle-end/104885: Fix ICE with large stack frame on powerpc64.

    My recent testcase for PR c++/84964.C stress tests the middle-end by
    attempting to pass a UINT_MAX sized structure on the stack.  Although
    my fix to PR84964 avoids the ICE after sorry on x86_64 and similar
    targets, a related issue still exists on powerpc64 (and similar
    ACCUMULATE_OUTGOING_ARGS/ARGS_GROW_DOWNWARD targets) which don't
    issue a "sorry, unimplemented" message, but instead ICE elsewhere.

    After attempting several alternate fixes, the simplest solution is
    to just defensively check in mark_stack_region_used that the upper
    bound of the region lies within the allocated stack_usage_map
    array, which is of size highest_outgoing_arg_in_use.  When this isn't
    the case, the code now follows the same path as for variable sized
    regions, and uses stack_usage_watermark rather than a map.

    2022-03-26  Roger Sayle  <roger@nextmovesoftware.com>

    gcc/ChangeLog
            PR middle-end/104885
            * calls.cc (mark_stack_region_used): Check that the region
            is within the allocated size of stack_usage_map.

[Bug middle-end/104885] ICE in compiling new test case g++.dg/other/pr84964.C after r12-7607-ga717376e99fb33

[roger at nextmovesoftware dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104885

Roger Sayle <roger at nextmovesoftware dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
   Target Milestone|---                         |12.0
             Status|ASSIGNED                    |RESOLVED

--- Comment #3 from Roger Sayle <roger at nextmovesoftware dot com> ---
This should now be fixed on mainline.