Fortran: Source allocation of pure function result rejected [PR119948]

Fortran: Source allocation of pure function result rejected [PR119948]

2025-05-07  Paul Thomas  <pault@gcc.gnu.org>
	    and Steven G. Kargl  <kargl@gcc.gnu.org>

gcc/fortran
	PR fortran/119948
	* resolve.cc (gfc_impure_variable): The result of a module
	procedure with an interface declaration is not impure even if
	the current namespace is not the same as the symbol's.
	* primary.cc (match_variable): Module procedures with sym the
	same as result can be treated as variables, although marked
	external.

gcc/testsuite/
	PR fortran/119948
	* gfortran.dg/pr119948.f90: New test.

(cherry picked from commit 0abc77da9d704bba55a376bb5c162a54826ab94a)