1 // RUN: %clang_cc1 -fblocks -fsyntax-only -verify %s
2
3 void (^e) (int arg, const char * format, ...) __attribute__ ((__sentinel__ (1,1)));
4
main()5 int main() {
6 void (^bbad) (int arg, const char * format) __attribute__ ((__sentinel__)) ; // expected-warning {{sentinel' attribute only supported for variadic blocks}}
7 void (^b) (int arg, const char * format, ...) __attribute__ ((__sentinel__)) = // expected-note {{block has been explicitly marked sentinel here}}
8 ^ __attribute__ ((__sentinel__)) (int arg, const char * format, ...) {};
9 void (^z) (int arg, const char * format, ...) __attribute__ ((__sentinel__ (2))) = ^ __attribute__ ((__sentinel__ (2))) (int arg, const char * format, ...) {}; // expected-note {{block has been explicitly marked sentinel here}}
10
11
12 void (^y) (int arg, const char * format, ...) __attribute__ ((__sentinel__ (5))) = ^ __attribute__ ((__sentinel__ (5))) (int arg, const char * format, ...) {}; // expected-note {{block has been explicitly marked sentinel here}}
13
14 b(1, "%s", (void*)0); // OK
15 b(1, "%s", 0); // expected-warning {{missing sentinel in block call}}
16 z(1, "%s",4 ,1,0); // expected-warning {{missing sentinel in block call}}
17 z(1, "%s", (void*)0, 1, 0); // OK
18
19 y(1, "%s", 1,2,3,4,5,6,7); // expected-warning {{missing sentinel in block call}}
20
21 y(1, "%s", (void*)0,3,4,5,6,7); // OK
22
23 }
24
25