https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106500
--- Comment #7 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Harald Anlauf <anl...@gcc.gnu.org>: https://gcc.gnu.org/g:ded646c91d2c0fb908faf6fa8fe1df0d7df49d16 commit r14-9893-gded646c91d2c0fb908faf6fa8fe1df0d7df49d16 Author: Harald Anlauf <anl...@gmx.de> Date: Tue Apr 9 23:07:59 2024 +0200 Fortran: fix argument checking of intrinsics C_SIZEOF, C_F_POINTER [PR106500] The interpretation of the F2018 standard regarding valid arguments to the intrinsic C_SIZEOF(X) was clarified in an edit to 18-007r1: https://j3-fortran.org/doc/year/22/22-101r1.txt loosening restrictions and giving examples. The F2023 text has: ! F2023:18.2.3.8 C_SIZEOF (X) ! ! X shall be a data entity with interoperable type and type parameters, ! and shall not be an assumed-size array, an assumed-rank array that ! is associated with an assumed-size array, an unallocated allocatable ! variable, or a pointer that is not associated. where ! 3.41 data entity ! data object, result of the evaluation of an expression, or the ! result of the execution of a function reference Update the checking code for interoperable arguments accordingly, and extend to reject functions returning pointer as FPTR argument to C_F_POINTER. gcc/fortran/ChangeLog: PR fortran/106500 * check.cc (is_c_interoperable): Fix checks for C_SIZEOF. (gfc_check_c_f_pointer): Reject function returning a pointer as FPTR, and improve an error message. gcc/testsuite/ChangeLog: PR fortran/106500 * gfortran.dg/c_sizeof_6.f90: Remove wrong dg-error. * gfortran.dg/sizeof_2.f90: Adjust pattern. * gfortran.dg/c_f_pointer_tests_9.f90: New test. * gfortran.dg/c_sizeof_7.f90: New test.
