https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58055 Bug 58055 depends on bug 67302, which changed state.
Bug 67302 Summary: [C++14] copy elision in return (expression) https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67302 What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution|--- |FIXED
