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