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 bbad = ^void (int arg, const char * format) __attribute__ ((__sentinel__)) {} ; // expected-warning {{'sentinel' attribute only supported for variadic blocks}}
8 void (^b) (int arg, const char * format, ...) __attribute__ ((__sentinel__)) = // expected-note {{block has been explicitly marked sentinel here}}
9 ^ __attribute__ ((__sentinel__)) (int arg, const char * format, ...) {};
10 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}}
11
12
13 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}}
14
15 b(1, "%s", (void*)0); // OK
16 b(1, "%s", 0); // expected-warning {{missing sentinel in block call}}
17 z(1, "%s",4 ,1,0); // expected-warning {{missing sentinel in block call}}
18 z(1, "%s", (void*)0, 1, 0); // OK
19
20 y(1, "%s", 1,2,3,4,5,6,7); // expected-warning {{missing sentinel in block call}}
21
22 y(1, "%s", (void*)0,3,4,5,6,7); // OK
23
24 }
25
26