derek.holloway
7502bf64a4
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26 lines
1.5 KiB
C
26 lines
1.5 KiB
C
// RUN: %clang_cc1 -fblocks -fsyntax-only -verify %s
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void (^e) (int arg, const char * format, ...) __attribute__ ((__sentinel__ (1,1)));
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int main(void) {
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void (^bbad) (int arg, const char * format) __attribute__ ((__sentinel__)) ; // expected-warning {{'sentinel' attribute only supported for variadic blocks}}
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bbad = ^void (int arg, const char * format) __attribute__ ((__sentinel__)) {} ; // expected-warning {{'sentinel' attribute only supported for variadic blocks}}
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void (^b) (int arg, const char * format, ...) __attribute__ ((__sentinel__)) = // expected-note {{block has been explicitly marked sentinel here}}
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^ __attribute__ ((__sentinel__)) (int arg, const char * format, ...) {};
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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}}
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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}}
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b(1, "%s", (void*)0); // OK
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b(1, "%s", 0); // expected-warning {{missing sentinel in block call}}
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z(1, "%s",4 ,1,0); // expected-warning {{missing sentinel in block call}}
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z(1, "%s", (void*)0, 1, 0); // OK
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y(1, "%s", 1,2,3,4,5,6,7); // expected-warning {{missing sentinel in block call}}
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y(1, "%s", (void*)0,3,4,5,6,7); // OK
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}
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