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

   1 /* Test whether the __builtin__CFStringMakeConstantString
   2    "function" fails gracefully when handed a non-constant
   3    argument.  This will only work on MacOS X 10.1.2 and later.  */
   4 /* Developed by Ziemowit Laski <zlaski@apple.com>.  */
   5
   6 /* { dg-do compile { target *-*-darwin* } } */
   7 /* { dg-options "-mconstant-cfstrings" } */
   8
   9 typedef const struct __CFString *CFStringRef;
  10
  11 #ifdef __CONSTANT_CFSTRINGS__
  12 #define CFSTR(STR)  ((CFStringRef) __builtin___CFStringMakeConstantString (STR))
  13 #else
  14 #error __CONSTANT_CFSTRINGS__ not defined
  15 #endif
  16
  17 extern int cond;
  18 extern const char *func(void);
  19
  20 const CFStringRef s0 = CFSTR("Hello" "there");
  21
  22 int main(void) {
  23   CFStringRef s1 = CFSTR("Str1");
  24   CFStringRef s2 = CFSTR(cond? "Str2": "Str3"); /* { dg-error "CFString literal expression is not a string constant" } */
  25   CFStringRef s3 = CFSTR(func());  /* { dg-error "CFString literal expression is not a string constant" } */
  26
  27   return 0;
  28 }