minix/external/bsd/llvm/dist/clang/test/Sema/block-sentinel-attribute.c
Lionel Sambuc f4a2713ac8 Importing netbsd clang -- pristine
Change-Id: Ia40e9ffdf29b5dab2f122f673ff6802a58bc690f
2014-07-28 17:05:57 +02:00

25 lines
1.5 KiB
C

// RUN: %clang_cc1 -fblocks -fsyntax-only -verify %s
void (^e) (int arg, const char * format, ...) __attribute__ ((__sentinel__ (1,1)));
int main() {
void (^bbad) (int arg, const char * format) __attribute__ ((__sentinel__)) ; // expected-warning {{'sentinel' attribute only supported for variadic blocks}}
bbad = ^void (int arg, const char * format) __attribute__ ((__sentinel__)) {} ; // expected-warning {{'sentinel' attribute only supported for variadic blocks}}
void (^b) (int arg, const char * format, ...) __attribute__ ((__sentinel__)) = // expected-note {{block has been explicitly marked sentinel here}}
^ __attribute__ ((__sentinel__)) (int arg, const char * format, ...) {};
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}}
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}}
b(1, "%s", (void*)0); // OK
b(1, "%s", 0); // expected-warning {{missing sentinel in block call}}
z(1, "%s",4 ,1,0); // expected-warning {{missing sentinel in block call}}
z(1, "%s", (void*)0, 1, 0); // OK
y(1, "%s", 1,2,3,4,5,6,7); // expected-warning {{missing sentinel in block call}}
y(1, "%s", (void*)0,3,4,5,6,7); // OK
}