https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109788
--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Jakub Jelinek <ja...@gcc.gnu.org>: https://gcc.gnu.org/g:395a75593ef87a68a04111bb08243b5d9a811f45 commit r14-656-g395a75593ef87a68a04111bb08243b5d9a811f45 Author: Jakub Jelinek <ja...@redhat.com> Date: Wed May 10 13:20:39 2023 +0200 ipa-prop: Fix ipa_get_callee_param_type for calls with argument type mismatches The PR contains a testcase where the Fortran FE creates FUNCTION_TYPE which doesn't really match the passed in arguments (FUNCTION_TYPE has 5 arguments, call has 6). Now, I think that is a Fortran FE bug that should be fixed there, but I think with function pointers one can create something similar (of course invalid) in C/C++ too,so IMHO IPA should be also more careful. The ipa_get_callee_param_type function can return NULL if something goes wrong and it does e.g. if asked for 7th argument type on a function with just 5 arguments and similar. But, if a function isn't varargs, when asked for 6th argument type on a function with just 5 arguments it actually returns void_type_node because the argument list is in that case terminated with void_list_node. The following patch makes sure we don't treat void_list_node as something holding another argument. 2023-05-10 Jakub Jelinek <ja...@redhat.com> PR fortran/109788 * ipa-prop.cc (ipa_get_callee_param_type): Don't return TREE_VALUE (t) if t is void_list_node.
