[Bug fortran/103608] New: ICE in do_intent, at fortran/frontend-passes.c:3035

[gscfq--- via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103608

            Bug ID: 103608
           Summary: ICE in do_intent, at fortran/frontend-passes.c:3035
           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: ---

Affects versions down to at least r5 :
(gcc configured with --enable-checking=yes)


$ cat z1.f90
program p
   integer :: i, x
   x(*) = 0
   do i = 1, 2
      call s(x(i))
   end do
end


$ cat z2.f90
program p
   integer :: i, x
   x(*) = 0
   do i = 1, 2
      print *, x(i)
   end do
end


$ cat z3.f90
program p
   integer :: i, x
   x(*) = 0
   print *, (x(i), i=1,2)
end


$ gfortran-12-20211205 -c z1.f90
z1.f90:2:18:

    2 |    integer :: i, x
      |                  1
Error: Alternate return specifier in function 'x' at (1) is not allowed
z1.f90:5:13:

    5 |       call s(x(i))
      |             1
Error: Missing alternate return specifier in subroutine call at (1)
f951: internal compiler error: Segmentation fault
0xf0b99f crash_signal
        ../../gcc/toplev.c:322
0x9564d5 do_intent
        ../../gcc/fortran/frontend-passes.c:3035
0x9564d5 do_function
        ../../gcc/fortran/frontend-passes.c:2699
0x952495 gfc_expr_walker(gfc_expr**, int (*)(gfc_expr**, int*, void*), void*)
        ../../gcc/fortran/frontend-passes.c:5223
0x9554f3 gfc_code_walker(gfc_code**, int (*)(gfc_code**, int*, void*), int
(*)(gfc_expr**, int*, void*), void*)
        ../../gcc/fortran/frontend-passes.c:5392
0x954697 gfc_code_walker(gfc_code**, int (*)(gfc_code**, int*, void*), int
(*)(gfc_expr**, int*, void*), void*)
        ../../gcc/fortran/frontend-passes.c:5669
0x95570b doloop_warn
        ../../gcc/fortran/frontend-passes.c:3059
0x955c5a gfc_run_passes(gfc_namespace*)
        ../../gcc/fortran/frontend-passes.c:156
0x856467 gfc_resolve(gfc_namespace*)
        ../../gcc/fortran/resolve.c:17572
0x83e764 resolve_all_program_units
        ../../gcc/fortran/parse.c:6586
0x83e764 gfc_parse_file()
        ../../gcc/fortran/parse.c:6842
0x88c73f gfc_be_parse_file
        ../../gcc/fortran/f95-lang.c:216