1 // PR c++/58882 2 // { dg-do compile { target c++11 } } 3 // { dg-options "-pedantic" } 4 5 struct A 6 { 7 constexpr operator int() const { return 0; } 8 }; 9 10 int a[] = { [A()] = 0 }; // { dg-warning "does not allow C99 designated initializers" } 11 12 enum E { e0 }; 13 14 struct B 15 { EB16 constexpr operator E() const { return E::e0; } 17 }; 18 19 int b[] = { [B()] = 0 }; // { dg-warning "does not allow C99 designated initializers" } 20 21 enum class SE { se0 }; 22 23 struct C 24 { SEC25 constexpr operator SE() const { return SE::se0; } 26 }; 27 28 int c[] = { [C()] = 0 }; // { dg-error "integral constant-expression" } 29 // { dg-warning "does not allow C99 designated initializers" "" { target *-*-* } .-1 } 30