[Bug fortran/67806] ICE on initialization of type(character) with len null

[gerhard.steinmetz.fort...@t-online.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67806

--- Comment #1 from Gerhard Steinmetz <gerhard.steinmetz.fort...@t-online.de> 
---
Silently accepted without declaring x :

$ cat z4b.f90
program p
   integer, pointer :: n
   type t
      character(null(n)) :: c
   end type
end

$ gfortran -g -O0 -Wall -fcheck=all -fno-frontend-optimize z4b.f90
$ a.out