[Bug libfortran/67540] string_intrinsics_inc.c sanitizer detects null pointer passed to memcpy

[zeccav at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67540

--- Comment #13 from Vittorio Zecca <zeccav at gmail dot com> ---
In C strings are pointers, in Fortran they are not.

So ptr="string" is wrong.

As in the following:
character, pointer :: cptr
cptr="qwerty"
end
Running it I get a SIGSEGV.