[Bug fortran/69064] Unhelpful error message when a module variable was not included in the only list

[dominiq at lps dot ens.fr]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69064

--- Comment #36 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> read_input_mod is built from the source file read_input_mod.f90. 
> It's the one with the bug

I get an ICE when compiling this file

 SUBROUTINE READ_INPUT(s,input,inp_lines)
 1
internal compiler error: in gfc_typenode_for_spec, at
fortran/trans-types.c:1084