[Bug fortran/104331] New: [10/11/12 Regression] ICE in gfc_simplify_eoshift, at fortran/simplify.cc:2590

[gscfq--- via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104331

            Bug ID: 104331
           Summary: [10/11/12 Regression] ICE in gfc_simplify_eoshift, at
                    fortran/simplify.cc:2590
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: gs...@t-online.de
  Target Milestone: ---

Starts with r10, changed between 20211031 and 20211107 :


$ cat z1.f90
program p
   character(3), parameter :: a(:) = ['123']
   character(3), parameter :: b(*) = eoshift(a, 1)
end


$ cat z2.f90
program p
   character(3), parameter :: a(:) = ['123']
   character(3), parameter :: b(2) = eoshift(a, 1)
end


$ cat z3.f90
program p
   character(3), parameter :: a(:) = ['123']
   character(3), parameter :: b(1,1) = eoshift(a, 1)
end


$ gfortran-12-20211031 -c z1.f90
z1.f90:2:34:

    2 |    character(3), parameter :: a(:) = ['123']
      |                                  1
Error: Parameter array 'a' at (1) cannot be automatic or of deferred shape


$ gfortran-12-20220130 -c z1.f90
f951: internal compiler error: Segmentation fault
0xcc655f crash_signal
        ../../gcc/toplev.cc:322
0x77ff73 gfc_simplify_eoshift(gfc_expr*, gfc_expr*, gfc_expr*, gfc_expr*)
        ../../gcc/fortran/simplify.cc:2590
0x70279e do_simplify
        ../../gcc/fortran/intrinsic.cc:4683
0x70d64a gfc_intrinsic_func_interface(gfc_expr*, int)
        ../../gcc/fortran/intrinsic.cc:5055
0x7619c8 resolve_unknown_f
        ../../gcc/fortran/resolve.cc:2972
0x7619c8 resolve_function
        ../../gcc/fortran/resolve.cc:3329
0x7619c8 gfc_resolve_expr(gfc_expr*)
        ../../gcc/fortran/resolve.cc:7169
0x6f2644 gfc_reduce_init_expr(gfc_expr*)
        ../../gcc/fortran/expr.cc:3155
0x6f55d0 gfc_match_init_expr(gfc_expr**)
        ../../gcc/fortran/expr.cc:3203
0x6df964 variable_decl
        ../../gcc/fortran/decl.cc:3004
0x6df964 gfc_match_data_decl()
        ../../gcc/fortran/decl.cc:6299
0x749f93 match_word
        ../../gcc/fortran/parse.cc:67
0x749f93 decode_statement
        ../../gcc/fortran/parse.cc:378
0x74b9da next_free
        ../../gcc/fortran/parse.cc:1397
0x74b9da next_statement
        ../../gcc/fortran/parse.cc:1629
0x74cf6b parse_spec
        ../../gcc/fortran/parse.cc:4168
0x7500bc parse_progunit
        ../../gcc/fortran/parse.cc:6192
0x751781 gfc_parse_file()
        ../../gcc/fortran/parse.cc:6737
0x79eecf gfc_be_parse_file
        ../../gcc/fortran/f95-lang.cc:216