[Bug fortran/107266] Reject kind=4 characters for BIND(C) – it invalid and generates wrong code

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107266

--- Comment #5 from Tobias Burnus <burnus at gcc dot gnu.org> ---
I do note that we already have bind(C) + kind=4 examples:
https://gcc.gnu.org/git/?p=gcc.git;a=blob;f=gcc/testsuite/gfortran.dg/PR100906.f90
  integer, parameter :: c_ucs4_char = 4
and more.

=> Keep permitting it but fix it

=> Patch: https://gcc.gnu.org/pipermail/gcc-patches/2022-October/603639.html