[Bug fortran/78534] Use a larger integer type for character lengths on 64-bit targets

[jb at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78534

--- Comment #4 from Janne Blomqvist <jb at gcc dot gnu.org> ---
Created attachment 40154
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40154&action=edit
Preliminary patch

Preliminary patch changing gfc_charlen_t from int to ptrdiff_t. Fails the
char_result_8.f90 testcase.