[Bug c/102504] New: [12 Regression] ICE in build_outer_var_ref, at omp-low.c:746

["gscfq@t-online.de" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102504

            Bug ID: 102504
           Summary: [12 Regression] ICE in build_outer_var_ref, at
                    omp-low.c:746
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: gscfq@t-online.de
  Target Milestone: ---

Started between 20210808 and 20210822, in addition to pr102415 :


$ cat z1.c
void abort ();
void f ()
{
  int r;
  #pragma omp scope reduction(+:r) nowait
  abort ();
}


$ gcc-12-20210926 -c z1.c -fopenmp
during GIMPLE pass: omplower
z1.c: In function 'f':
z1.c:5:11: internal compiler error: in build_outer_var_ref, at omp-low.c:746
    5 |   #pragma omp scope reduction(+:r) nowait
      |           ^~~
0xb621b9 build_outer_var_ref
        ../../gcc/omp-low.c:746
0xb768ea lower_reduction_clauses
        ../../gcc/omp-low.c:7654
0xb687dc lower_omp_scope
        ../../gcc/omp-low.c:8839
0xb687dc lower_omp_1
        ../../gcc/omp-low.c:14101
0xb687dc lower_omp
        ../../gcc/omp-low.c:14283
0xb6922d lower_omp_1
        ../../gcc/omp-low.c:14073
0xb6922d lower_omp
        ../../gcc/omp-low.c:14283
0xb70381 execute_lower_omp
        ../../gcc/omp-low.c:14322
0xb70381 execute
        ../../gcc/omp-low.c:14370