test/Sema/function-pointer-sentinel-attribute.c

   1 // RUN: clang-cc -fsyntax-only -verify %s
   2
   3 void (*e) (int arg, const char * format, ...) __attribute__ ((__sentinel__ (1,1)));
   4
   5 int main()
   6 {
   7         void (*b) (int arg, const char * format, ...) __attribute__ ((__sentinel__));  // expected-note {{function has been explicitly marked sentinel here}}
   8         void (*z) (int arg, const char * format, ...) __attribute__ ((__sentinel__ (2))); // expected-note {{function has been explicitly marked sentinel here}}
   9
  10
  11         void (*y) (int arg, const char * format, ...) __attribute__ ((__sentinel__ (5))); // expected-note {{function has been explicitly marked sentinel here}}
  12
  13         b(1, "%s", (void*)0);   // OK
  14         b(1, "%s", 0);  // expected-warning {{missing sentinel in function call}}
  15         z(1, "%s",4 ,1,0);  // expected-warning {{missing sentinel in function call}}
  16         z(1, "%s", (void*)0, 1, 0);     // OK
  17
  18         y(1, "%s", 1,2,3,4,5,6,7);  // expected-warning {{missing sentinel in function call}}
  19
  20         y(1, "%s", (void*)0,3,4,5,6,7); // OK
  21
  22 }
  23