https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106470
Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Resolution|--- |INVALID Status|UNCONFIRMED |RESOLVED --- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> --- You are violating C aliasing rules. You need a uint16_t type which is marked as may_alias. Or use memcpy or use -fno-strict-aliasing etc.