gcc/testsuite/gcc.dg/darwin-cfstring-format-1.c

   1 /* Check CFString format extensions.  */
   2 /* { dg-do compile { target *-*-darwin* } } */
   3 /* { dg-options "-Wall" } */
   4
   5 extern int printf (const char *fmt, ...);
   6
   7 typedef const struct __CFString * CFStringRef;
   8
   9 #ifdef __CONSTANT_CFSTRINGS__
  10 #define CFSTR(cStr)  ((CFStringRef) __builtin___CFStringMakeConstantString ("" cStr ""))
  11 #else
  12 #error requires CFString
  13 #endif
  14
  15 int s1 (CFStringRef fmt, ...) __attribute__((format(CFString, 1, 2))) ; /* OK */
  16 int s2 (int a, CFStringRef fmt, ... ) __attribute__((format(__CFString__, 2, 3))) ; /* OK */
  17
  18 int s2a (int a, CFStringRef fmt, ... ) __attribute__((format(CFString, 2, 2))) ; /* { dg-error "format string argument follows the args to be formatted" } */
  19
  20 int s3 (const char *fmt, ... ) __attribute__((format(__CFString__, 1, 2))) ; /* { dg-error "format argument should be a .CFString. reference but a string was found" } */
  21 int s4 (CFStringRef fmt, ... ) __attribute__((format(printf, 1, 2))) ; /* { dg-error "found a .CFStringRef.* but the format argument should be a string" } */
  22
  23 char *s5 (char dum, char *fmt1, ... ) __attribute__((format_arg(2))) ; /* OK */
  24 CFStringRef s6 (CFStringRef dum, CFStringRef fmt1, ... ) __attribute__((format_arg(2))) ; /* OK */
  25
  26 char *s7 (int dum, void *fmt1, ... ) __attribute__((format_arg(2))) ; /* { dg-error "format string argument is not a string type" } */
  27 int s8 (CFStringRef dum, CFStringRef fmt1, ... ) __attribute__((format_arg(2))) ; /* { dg-error "function does not return string type" } */
  28
  29 void foo (void)
  30 {
  31   CFStringRef notchk = CFSTR ("here is an unchecked %d %s string");
  32   s1 (notchk, 5, 6, 7);
  33   printf("this one is checked %d %s", 3, 4, 5); /* { dg-warning "format .%s. expects argument of type .char .., but argument 3 has type .int." } */
  34                         /* { dg-warning "too many arguments for format" "" { target *-*-* } .-1 } */
  35   printf(s5 (1, "and so is this %d %d %s", 3, 4, "hey", 6), 5, 6, 12);/* { dg-warning "format .%s. expects argument of type .char .., but argument 4 has type .int." } */
  36 }