https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100409 Bug 100409 depends on bug 101087, which changed state.
Bug 101087 Summary: [9 Regression] Unevaluated operand of sizeof affects noexcept operator https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101087 What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution|--- |FIXED