[Bug c/97862] New: [11 Regression] ICE in expand_omp_for_init_vars, at omp-expand.c:2524

[gscfq@t-online.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97862

            Bug ID: 97862
           Summary: [11 Regression] ICE in expand_omp_for_init_vars, at
                    omp-expand.c:2524
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: gscfq@t-online.de
  Target Milestone: ---

Changed between 20200705 and 20200712 :


$ cat z1.c
void f ()
{
  int i, j;
#pragma omp for collapse(2)
  for (i = 0; i < 1; ++i)
    for (j = 0; j < i; ++j);
}


$ gcc-11-20200705 -c z1.c -fopenmp
$
$ gcc-11-20201115 -c z1.c -fopenmp
during GIMPLE pass: ompexp
z1.c: In function 'f':
z1.c:4:9: internal compiler error: Segmentation fault
    4 | #pragma omp for collapse(2)
      |         ^~~
0xb3b52f crash_signal
        ../../gcc/toplev.c:330
0x145ebc6 expand_omp_for_init_vars
        ../../gcc/omp-expand.c:2524
0x146be17 expand_omp_for_static_nochunk
        ../../gcc/omp-expand.c:5261
0x1474b6c expand_omp_for
        ../../gcc/omp-expand.c:8006
0x147537a expand_omp
        ../../gcc/omp-expand.c:9883
0x147725d execute_expand_omp
        ../../gcc/omp-expand.c:10115