[Bug fortran/46459] ICE (segfault): Invalid read in compare_actual_formal [error recovery]

[mikael at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46459

--- Comment #5 from Mikael Morin <mikael at gcc dot gnu.org> ---
The initial test doesn't lead to a segfault any more.

It is now rejected with:
comment_0.f90:7.8:

call sub(1)
        1
Error: Explicit interface required for 'sub' at (1): volatile argument


However, the following variant is also rejected with the same error:

 call sub(1)
contains
  subroutine sub(j)
   integer, volatile :: j
  end subroutine sub
end