https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60417 Bug 60417 depends on bug 54835, which changed state.
Bug 54835 Summary: [C++11][DR 1518] Explicit default constructors not respected during copy-list-initialization https://gcc.gnu.org/bugzilla/show_bug.cgi?id=54835 What |Removed |Added ---------------------------------------------------------------------------- Status|RESOLVED |SUSPENDED Resolution|FIXED |---