https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106352
Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution|--- |INVALID --- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> --- dst and src[12] alias but when you have the temporaries all reads happen before the writes.