https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110541
Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Resolution|--- |FIXED Status|ASSIGNED |RESOLVED Keywords| |documentation --- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> --- Fixed as documentation issue. Note "MASK elements outside of [0, length(V0) + length(V1) - 1] invoke undefined behavior (the modulo operation above doesn't apply)." isn't actually the case, it would be a missed canonicalization only.