https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113240
--- Comment #2 from Lehua Ding <lehua.ding at rivai dot ai> --- (In reply to Andrew Pinski from comment #1) > There needs to be a -Wabi warning for this too for the change between > versions. I'm more inclined to think of it as a bug, since the vector ABI specification is still being worked out and isn't stable and currently used with vector arguments will throw a warning about unstable.