[Bug c/84619] Segmentation fault when running a c-program which is calling a fortran subroutine

[jb at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84619

--- Comment #2 from Janne Blomqvist <jb at gcc dot gnu.org> ---
size_t is the documented type, but for various reasons due to idiosyncrasies in
the gfortran frontend, for the moment it emits a signed type the same size as
size_t. 

Just use size_t, that should work fine.