27 lines
1.1 KiB
C
27 lines
1.1 KiB
C
//RUN: clang-cc -fsyntax-only -verify %s
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#include <stdarg.h>
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// same as format(printf(...))...
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void a2(const char *a, ...) __attribute__((format(printf0, 1,2))); // no-error
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void b2(const char *a, ...) __attribute__((format(printf0, 1,1))); // expected-error {{'format' attribute parameter 3 is out of bounds}}
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void c2(const char *a, ...) __attribute__((format(printf0, 0,2))); // expected-error {{'format' attribute parameter 2 is out of bounds}}
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void d2(const char *a, int c) __attribute__((format(printf0, 1,2))); // expected-error {{format attribute requires variadic function}}
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void e2(char *str, int c, ...) __attribute__((format(printf0, 2,3))); // expected-error {{format argument not a string type}}
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// FreeBSD usage
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#define __printf0like(fmt,va) __attribute__((__format__(__printf0__,fmt,va)))
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void null(int i, const char *a, ...) __printf0like(2,0); // no-error
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void null(int i, const char *a, ...) {
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if (a)
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(void)0/* vprintf(...) would go here */;
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}
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void callnull(void){
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null(0, 0); // no error
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null(0, (char*)0); // no error
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null(0, (void*)0); // no error
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null(0, (int*)0); // expected-warning {{incompatible pointer types}}
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}
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