sentinel-attribute.c revision 2f7c39246a968b921a6d95c7f8037fb3429e9501 
1// RUN: clang-cc -fsyntax-only -verify %s
2int x __attribute__((sentinel)); //expected-warning{{'sentinel' attribute only applies to function, method or block types}}
3
4void f1(int a, ...) __attribute__ ((sentinel));
5void f2(int a, ...) __attribute__ ((sentinel(1)));
6
7void f3(int a, ...) __attribute__ ((sentinel("hello"))); //expected-error{{'sentinel' attribute requires parameter 1 to be an integer constant}}
8void f4(int a, ...) __attribute__ ((sentinel(1, 2, 3))); //expected-error{{attribute requires 0, 1 or 2 argument(s)}}
9void f4(int a, ...) __attribute__ ((sentinel(-1))); //expected-error{{parameter 1 less than zero}}
10void f4(int a, ...) __attribute__ ((sentinel(0, 2))); // expected-error{{parameter 2 not 0 or 1}}
11
12void f5(int a) __attribute__ ((sentinel)); //expected-warning{{'sentinel' attribute only supported for variadic functions}}
13
14
15void f6() __attribute__((__sentinel__));  // expected-warning {{'sentinel' attribute requires named arguments}}
16