[Bug fortran/83901] New: [8 Regresion] ICE in fold_convert_loc, at fold-const.c:2402

[gscfq@t-online.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83901

            Bug ID: 83901
           Summary: [8 Regresion] ICE in fold_convert_loc, at
                    fold-const.c:2402
           Product: gcc
           Version: 8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: gscfq@t-online.de
  Target Milestone: ---

Since about 20171008, with -fcoarray=single or -fcoarray=lib :


$ cat z1.f90
program p
   character(8), allocatable :: x[:]
   x = 'abc'
   associate (y => x)
   end associate
end


$ gfortran-8-20180114 -c z1.f90 -fcoarray=single
z1.f90:4:0:

    associate (y => x)

internal compiler error: in fold_convert_loc, at fold-const.c:2402
0x91ee2f fold_convert_loc(unsigned int, tree_node*, tree_node*)
        ../../gcc/fold-const.c:2401
0x7b3957 trans_associate_var
        ../../gcc/fortran/trans-stmt.c:1804
0x7b3957 gfc_trans_block_construct(gfc_code*)
        ../../gcc/fortran/trans-stmt.c:1921
0x747a97 trans_code
        ../../gcc/fortran/trans.c:1924
0x76eb79 gfc_generate_function_code(gfc_namespace*)
        ../../gcc/fortran/trans-decl.c:6451
0x6fe980 translate_all_program_units
        ../../gcc/fortran/parse.c:6103
0x6fe980 gfc_parse_file()
        ../../gcc/fortran/parse.c:6306
0x744e5f gfc_be_parse_file
        ../../gcc/fortran/f95-lang.c:204