https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100921
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> --- __asm__ __volatile__("call consumer" : : "D"(&v)); You are just passing the address of the variable. You either need "m"(v) there, a simple "memory" might work too. See PR 36639, and PR 93952. There are others.