/* Test for hex floating point constants: in C99 only. Preprocessor test. */ /* Origin: Joseph Myers */ /* { dg-do run } */ /* { dg-options "-std=iso9899:1990 -pedantic-errors" } */ #define f ( #define l ) #define str(x) #x #define xstr(x) str(x) /* C90: "0x1p+( 0x1p+)"; C99: "0x1p+f 0x1p+l" */ const char *s = xstr(0x1p+f 0x1p+l); extern void abort (void); extern int strcmp (const char *, const char *); int main (void) { if (strcmp (s, "0x1p+( 0x1p+)")) abort (); else return 0; /* Correct C90 behavior. */ }