https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70608
Bug ID: 70608 Summary: Braced initializer in default argument misses friendship Product: gcc Version: 6.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: potswa at mac dot com Target Milestone: --- A braced-init-list in a default function argument does not receive friendship as it should. class A { A() {} friend int ok(A); friend int f(A); friend int g(A); }; int ok(A = A()); // OK. int f(A = {}); // Error. Should be same as previous. int g(A (&&)[1] = { A() }); // Error.