http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56027
Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |WAITING Last reconfirmed| |2013-01-18 Ever Confirmed|0 |1 --- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> 2013-01-18 10:45:55 UTC --- I think you want a pass-thru: #define opaque(x) __asm volatile ("# x" : "=g" (x) : "0" (x))