https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89863 Bug 89863 depends on bug 79364, which changed state.
Bug 79364 Summary: some variadic functions with an empty struct miscompiled with C++ (at least for x64 targets) https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79364 What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution|--- |FIXED