[Bug fortran/108435] New: [13 Regression] ICE in as_a, at is-a.h:242

[gscfq@t-online.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108435

            Bug ID: 108435
           Summary: [13 Regression] ICE in as_a, at is-a.h:242
           Product: gcc
           Version: 13.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: gscfq@t-online.de
  Target Milestone: ---

Started between 20220501 and 20220508 :
(gcc configured with --enable-checking=yes)


$ cat z1.f90
program p
   integer :: j
contains
   subroutine s
      integer :: i
      !$omp do simd collapse(2)
      do i = 1, 16
         do j = 1, i
         end do
      end do
   end
end


$ cat z2.f90
program p
contains
   subroutine s
      integer :: i, j
      !$omp do simd collapse(2)
      do i = 1, 16
         do j = 1, i
         end do
      end do
   end
end


$ gfortran-13-20230115 -c z2.f90 -fopenmp
$
$ gfortran-13-20230115 -c z1.f90 -fopenmp
z1.f90:1:9:

    1 | program p
      |         ^
internal compiler error: in as_a, at is-a.h:242
0xc3aeba gbind* as_a<gbind*, gimple>(gimple*)
        ../../gcc/is-a.h:242
0xc3aeba declare_vars(tree_node*, gimple*, bool)
        ../../gcc/gimplify.cc:697
0x1053aa7 convert_nonlocal_omp_clauses
        ../../gcc/tree-nested.cc:1590
0x10546d2 convert_nonlocal_reference_stmt
        ../../gcc/tree-nested.cc:1716
0xc34366 walk_gimple_stmt(gimple_stmt_iterator*, tree_node*
(*)(gimple_stmt_iterator*, bool*, walk_stmt_info*), tree_node* (*)(tree_node**,
int*, void*), walk_stmt_info*)
        ../../gcc/gimple-walk.cc:608
0xc34580 walk_gimple_seq_mod(gimple**, tree_node* (*)(gimple_stmt_iterator*,
bool*, walk_stmt_info*), tree_node* (*)(tree_node**, int*, void*),
walk_stmt_info*)
        ../../gcc/gimple-walk.cc:51
0xc34421 walk_gimple_stmt(gimple_stmt_iterator*, tree_node*
(*)(gimple_stmt_iterator*, bool*, walk_stmt_info*), tree_node* (*)(tree_node**,
int*, void*), walk_stmt_info*)
        ../../gcc/gimple-walk.cc:635
0xc34580 walk_gimple_seq_mod(gimple**, tree_node* (*)(gimple_stmt_iterator*,
bool*, walk_stmt_info*), tree_node* (*)(tree_node**, int*, void*),
walk_stmt_info*)
        ../../gcc/gimple-walk.cc:51
0x104c788 walk_body
        ../../gcc/tree-nested.cc:811
0x1054616 convert_nonlocal_reference_stmt
        ../../gcc/tree-nested.cc:1752
0xc34366 walk_gimple_stmt(gimple_stmt_iterator*, tree_node*
(*)(gimple_stmt_iterator*, bool*, walk_stmt_info*), tree_node* (*)(tree_node**,
int*, void*), walk_stmt_info*)
        ../../gcc/gimple-walk.cc:608
0xc34580 walk_gimple_seq_mod(gimple**, tree_node* (*)(gimple_stmt_iterator*,
bool*, walk_stmt_info*), tree_node* (*)(tree_node**, int*, void*),
walk_stmt_info*)
        ../../gcc/gimple-walk.cc:51
0xc34421 walk_gimple_stmt(gimple_stmt_iterator*, tree_node*
(*)(gimple_stmt_iterator*, bool*, walk_stmt_info*), tree_node* (*)(tree_node**,
int*, void*), walk_stmt_info*)
        ../../gcc/gimple-walk.cc:635
0xc34580 walk_gimple_seq_mod(gimple**, tree_node* (*)(gimple_stmt_iterator*,
bool*, walk_stmt_info*), tree_node* (*)(tree_node**, int*, void*),
walk_stmt_info*)
        ../../gcc/gimple-walk.cc:51
0xc34421 walk_gimple_stmt(gimple_stmt_iterator*, tree_node*
(*)(gimple_stmt_iterator*, bool*, walk_stmt_info*), tree_node* (*)(tree_node**,
int*, void*), walk_stmt_info*)
        ../../gcc/gimple-walk.cc:635
0xc34580 walk_gimple_seq_mod(gimple**, tree_node* (*)(gimple_stmt_iterator*,
bool*, walk_stmt_info*), tree_node* (*)(tree_node**, int*, void*),
walk_stmt_info*)
        ../../gcc/gimple-walk.cc:51
0x104c788 walk_body
        ../../gcc/tree-nested.cc:811
0x104c7d8 walk_function
        ../../gcc/tree-nested.cc:822
0x104c7d8 walk_all_functions
        ../../gcc/tree-nested.cc:887
0x10583b4 lower_nested_functions(tree_node*)
        ../../gcc/tree-nested.cc:3736