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