https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69002
Martin Sebor <msebor at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2015-12-21 Ever confirmed|0 |1 Known to fail| |4.9.3, 5.1.0, 6.0 --- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> --- You're right. I misunderstood the problem you are pointing out. Not the initialization but the access to a member of an atomic struct (I still haven't paged the initialization stuff out of my brain.) I agree that access to a member of an atomic struct deserves a diagnostic (sorry for confusing things!) and confirm the absence of it in currently supported GCC versions.