https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114175
--- Comment #61 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-13 branch has been updated by Xi Ruoyao <xry...@gcc.gnu.org>: https://gcc.gnu.org/g:1ab646f678a9d47b338424ed69e9ae5d774b06ae commit r13-8527-g1ab646f678a9d47b338424ed69e9ae5d774b06ae Author: Xi Ruoyao <xry...@xry111.site> Date: Wed Mar 20 15:09:21 2024 +0800 mips: Fix C23 (...) functions returning large aggregates [PR114175] We were assuming TYPE_NO_NAMED_ARGS_STDARG_P don't have any named arguments and there is nothing to advance, but that is not the case for (...) functions returning by hidden reference which have one such artificial argument. This is causing gcc.dg/c23-stdarg-{6,8,9}.c to fail. Fix the issue by checking if arg.type is NULL, as r14-9503 explains. gcc/ChangeLog: PR target/114175 * config/mips/mips.cc (mips_setup_incoming_varargs): Only skip mips_function_arg_advance for TYPE_NO_NAMED_ARGS_STDARG_P functions if arg.type is NULL. (cherry picked from commit 6fc84f680d098f82c1c43435fdb206099f0df4df)
