[Bug fortran/84116] New: [7/8 Regression] ICE in gfc_match_omp_clauses, at fortran/openmp.c:1354

[gs...@t-online.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84116

            Bug ID: 84116
           Summary: [7/8 Regression] ICE in gfc_match_omp_clauses, at
                    fortran/openmp.c:1354
           Product: gcc
           Version: 8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: gs...@t-online.de
  Target Milestone: ---

Affects version 7 and 8 :

$ cat z1.f90
program p
   integer :: i
   !$omp simd linear ((i))
   do i = 1, 2
   end do
end

$ cat z2.f90
program p
   integer :: i
   !$omp simd linear (1)
   do i = 1, 2
   end do
end

$ cat z3.f90
program p
   integer :: i
   !$omp simd linear ()
   do i = 1, 2
   end do
end


$ gfortran-6 -c z1.f90 -fopenmp
z1.f90:3:22:

    !$omp simd linear ((i))
                      1
Error: Syntax error in OpenMP variable list at (1)


$ gfortran-8-20180128 -c z1.f90 -fopenmp
f951: internal compiler error: Segmentation fault
0xb94e5f crash_signal
        ../../gcc/toplev.c:325
0x6ec21d gfc_match_omp_clauses
        ../../gcc/fortran/openmp.c:1354
0x6ed6ce match_omp
        ../../gcc/fortran/openmp.c:2440
0x6ef8a4 gfc_match_omp_simd()
        ../../gcc/fortran/openmp.c:3249
0x6f51d9 match_word_omp_simd
        ../../gcc/fortran/parse.c:93
0x6f70cc match_word_omp_simd
        ../../gcc/fortran/parse.c:818
0x6f70cc decode_omp_directive
        ../../gcc/fortran/parse.c:824
0x6fad9a next_free
        ../../gcc/fortran/parse.c:1204
0x6fad9a next_statement
        ../../gcc/fortran/parse.c:1462
0x6fc0ec parse_spec
        ../../gcc/fortran/parse.c:3854
0x6fe5d3 parse_progunit
        ../../gcc/fortran/parse.c:5667
0x6ffbb4 gfc_parse_file()
        ../../gcc/fortran/parse.c:6207
0x7464ff gfc_be_parse_file
        ../../gcc/fortran/f95-lang.c:204