https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114175
--- Comment #39 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Edwin Lu <e...@gcc.gnu.org>: https://gcc.gnu.org/g:60586710b0646efdbbd77a7f53b93fb5edb87a61 commit r14-9552-g60586710b0646efdbbd77a7f53b93fb5edb87a61 Author: Edwin Lu <e...@rivosinc.com> Date: Mon Mar 18 11:43:41 2024 -0700 RISC-V: Fix C23 (...) functions returning large aggregates [PR114175] We assume that 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 causes gcc.dg/c23-stdarg-[68].c to fail Fix the issue by checking if arg.type is NULL as r14-9503-g218d1749612 explains Tested on linux rv64gcv. gcc/ChangeLog: PR target/114175 * config/riscv/riscv.cc (riscv_setup_incoming_varargs): Only skip riscv_funciton_arg_advance for TYPE_NO_NAMED_ARGS_STDARG_P functions if arg.type is NULL
