[Bug fortran/123903] Usage of unallocated `character` variable in `//` does not trigger warning

[anlauf at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123903

--- Comment #2 from anlauf at gcc dot gnu.org ---
For reference:

% nagfor pr123903.f90 -C=pointer -g && ./a.out 
NAG Fortran Compiler Release 7.2(Shin-Urayasu) Build 7203
[NAG Fortran Compiler normal termination]
Runtime Error: pr123903.f90, line 2: ALLOCATABLE S is not currently allocated
Program terminated by fatal error
Aborted