gcc/testsuite/gcc.dg/cpp/wchar-1.c

   1 /* Copyright (C) 2002 Free Software Foundation, Inc.  */
   2
   3 /* { dg-do run } */
   4 /* { dg-options "-w" } */
   5
   6 /* Source: Neil Booth, 24 Feb 2002.
   7
   8    Test if compiler and preprocessor agree on signeness of wide
   9    chars.  */
  10
  11 int main ()
  12 {
  13   __WCHAR_TYPE__ c = -1;
  14
  15 #if L'\x0' - 1 < 0
  16   if (c > 0)
  17     abort ();
  18 #else
  19   if (c < 0)
  20     abort ();
  21 #endif
  22
  23   return 0;
  24 }