https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99566
Bug ID: 99566 Summary: designated initialization rejects explicit constructor Product: gcc Version: 10.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: barry.revzin at gmail dot com Target Milestone: --- Reduced from StackOverflow (https://stackoverflow.com/q/66606143/2069064): struct A { explicit A(int); }; struct B { A a; }; A a{10}; // ok B b{.a{10}}; // error: converting from initializer list // would use explicit constructor But the initialization of the "a" subobject of B should work the same was as the initialization of the complete object "a".