https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111796
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> --- (In reply to Richard Biener from comment #1) > It's the promote_prototypes hook btw. Of the major targets (x86, arm, aarch64, powerpc, s390, riscv) only x86 defines the hook to true. But there are a lot of embedded archs doing so, and ia64 and the pa.