gcc/testsuite/gcc.dg/cpp/pr23827_c99.c

   1 /* { dg-do run { target c++11 } }  */
   2 /* { dg-options "-pedantic-errors" }  */
   3
   4 #define f (
   5 #define l )
   6 #define str(x) #x
   7 #define xstr(x) str(x)
   8
   9 /* C90 and C++98: "0x1p+( 0x1p+)"  */
  10 /* C99 and C++11: "0x1p+f 0x1p+l"  */
  11 const char *s = xstr(0x1p+f 0x1p+l);
  12
  13 void abort (void);
  14 int strcmp (const char *, const char *);
  15
  16 int
  17 main()
  18 {
  19   if (strcmp (s, "0x1p+( 0x1p+)"))
  20     return 0; /* Correct C99 and C++11 behavior.  */
  21   else
  22     abort (); /* Correct C90 and C++ behavior.  */
  23 }