[Bug fortran/77583] ICE in pp_quoted_string, at pretty-print.c:966

["gerhard dot steinmetz dot fortran at t-online dot de" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77583

--- Comment #1 from Gerhard Steinmetz <gerhard.steinmetz.fortran@t-online.de> ---

With official releases (configured with --enable-checking=release) :


$ gfortran-6 z1.f90
z1.f90:3:20:

    pure subroutine s
                    1
Error: internal procedure 's' at (1) conflicts with DUMMY argument
'
(null):0: confused by earlier errors, bailing out


$ gfortran-5 z1.f90
z1.f90:3:20:

    pure subroutine s
                    1
Error: internal procedure 's' at (1) conflicts with DUMMY argument
z1.f90:3:20: Error: internal procedure '' at (1) conflicts with DUMMY argument
# no ICE


$ gfortran-4.9 z1.f90
z1.f90: In function 's':
z1.f90:1:0: internal compiler error: in make_decl_rtl, at varasm.c:1221
 pure subroutine sub(s)
 ^
Please submit a full bug report,
with preprocessed source if appropriate.

---


More variants :


$ cat z2.f90
recursive subroutine sub(s)
contains
   recursive subroutine s
   end
end


$ cat z3.f90
elemental subroutine sub(s)
contains
   elemental subroutine s
   end
end


$ cat z4.f90
pure elemental subroutine sub(s)
contains
   pure elemental subroutine s
   end
end


$ cat z5.f90
pure subroutine sub(s)
contains
   elemental subroutine s
   end
end


$ cat z6.f90
elemental function f(s)
   real, intent(in) :: s
contains
   pure subroutine s
   end
end


# ...