1 // RUN: %clang_cc1 %s -fsyntax-only -verify -fblocks 2 3 #include <stdarg.h> 4 5 int main() { 6 void (^b) (int arg, const char * format, ...) __attribute__ ((__format__ (__printf__, 1, 3))) = // expected-error {{format argument not a string type}} 7 ^ __attribute__ ((__format__ (__printf__, 1, 3))) (int arg, const char * format, ...) {}; // expected-error {{format argument not a string type}} 8 9 void (^z) (int arg, const char * format, ...) __attribute__ ((__format__ (__printf__, 2, 3))) = ^ __attribute__ ((__format__ (__printf__, 2, 3))) (int arg, const char * format, ...) {}; 10 11 z(1, "%s", 1); // expected-warning{{format specifies type 'char *' but the argument has type 'int'}} 12 z(1, "%s", "HELLO"); // no-warning 13 } 14 15 void multi_attr(va_list ap, int *x, long *y) { 16 // Handle block with multiple format attributes. 17 void (^vprintf_scanf) (const char *, va_list, const char *, ...) __attribute__((__format__(__printf__, 1, 0))) __attribute__((__format__(__scanf__, 3, 4))) = 18 ^ __attribute__((__format__(__printf__, 1, 0))) __attribute__((__format__(__scanf__, 3, 4))) (const char *str, va_list args, const char *fmt, ...) {}; 19 20 vprintf_scanf("%", ap, "%d"); // expected-warning {{incomplete format specifier}}, expected-warning {{more '%' conversions than data arguments}} 21 } 22
