1 struct A {
2 	int a[1];
3 	int b;
4 };
5 
6 extern int c;
7 
8 static int o[] = {
9 	[__builtin_offsetof(struct A, b)] = 0,		// OK
10 	[__builtin_offsetof(struct A, a[0])] = 0,	// OK
11 	[__builtin_offsetof(struct A, a[0*0])] = 0,	// OK
12 	[__builtin_offsetof(struct A, a[c])] = 0	// KO
13 };
14 
15 /*
16  * check-name: constexprness __builtin_offsetof()
17  *
18  * check-error-start
19 constexpr-offsetof.c:12:39: error: bad constant expression
20  * check-error-end
21  */
22