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Subject: [Bug fortran/104826] New: [11/12 Regression] ICE in
 gimple_range_global, at value-query.cc:424
Date: Mon, 07 Mar 2022 18:02:39 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D104826

            Bug ID: 104826
           Summary: [11/12 Regression] ICE in gimple_range_global, at
                    value-query.cc:424
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: gscfq@t-online.de
  Target Milestone: ---

Changed between 20210606 and 20210613 :


$ cat z1.f90
program p
   character(:), allocatable :: x
   save
   !$omp target
   x =3D 'abc'
   !$omp end target
end


$ cat z2.f90   # no save
program p
   character(:), allocatable :: x
   !$omp target
   x =3D 'abc'
   !$omp end target
end


$ gfortran-12-20210606 -c z1.f90 -fopenmp
$ gfortran-12-20220213 -c z2.f90 -fopenmp
$
$ gfortran-12-20220213 -c z1.f90 -fopenmp
during GIMPLE pass: walloca
z1.f90:5:12:

    5 |    x =3D 'abc'
      |            ^
internal compiler error: Segmentation fault
0xccad7f crash_signal
        ../../gcc/toplev.cc:322
0xf5c9ec gimple_range_global(tree_node*)
        ../../gcc/value-query.cc:424
0x1864d80 ranger_cache::get_global_range(irange&, tree_node*) const
        ../../gcc/gimple-range-cache.cc:923
0x1860f8e gimple_ranger::export_global_ranges()
        ../../gcc/gimple-range.cc:474
0x189c0e1 pass_walloca::execute(function*)
        ../../gcc/gimple-ssa-warn-alloca.cc:381=