// Test that we explain why a template instantiation isn't constexpr // { dg-do compile { target c++11 } } template struct A { T t; constexpr int f() const { return 42; } // { dg-error "enclosing class" "" { target c++11_only } } }; struct B { B(); operator int(); }; constexpr A ai = { 42 }; constexpr int i = ai.f(); constexpr int b = A().f(); // { dg-error "" } template constexpr int f (T t) { return 42; } constexpr int x = f(B()); // { dg-error "non-literal" }