https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55004 Bug 55004 depends on bug 88174, which changed state.
Bug 88174 Summary: Make __real__ += __val usable in constexpr context. https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88174 What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution|--- |FIXED
