https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65322
Jonathan Wakely <redi at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution|--- |INVALID --- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> --- "b ? 1u : 0u" is not a constant expression, it depends on the variable b so the value is not known until run-time.