gcc/testsuite/gcc.dg/torture/builtin-wctype-1.c

   1 /* Copyright (C) 2004  Free Software Foundation.
   2
   3    Verify that built-in wctype function attributes are correctly set
   4    by the compiler.
   5
   6    Written by Kaveh Ghazi, 2004-03-25.  */
   7
   8 /* { dg-do link } */
   9
  10
  11 void test(int i)
  12 {
  13   /* All of these ctype functions should be const/pure and thus
  14      eliminated.  */
  15 #define TEST_CTYPE(FN) \
  16   extern int FN(int); \
  17   extern void link_failure_##FN(void); \
  18   if (FN(i) != FN(i)) \
  19     link_failure_##FN()
  20
  21 #ifdef __OPTIMIZE__
  22   TEST_CTYPE(iswalnum);
  23   TEST_CTYPE(iswalpha);
  24   TEST_CTYPE(iswblank);
  25   TEST_CTYPE(iswcntrl);
  26   TEST_CTYPE(iswdigit);
  27   TEST_CTYPE(iswgraph);
  28   TEST_CTYPE(iswlower);
  29   TEST_CTYPE(iswprint);
  30   TEST_CTYPE(iswpunct);
  31   TEST_CTYPE(iswspace);
  32   TEST_CTYPE(iswupper);
  33   TEST_CTYPE(iswxdigit);
  34   TEST_CTYPE(towlower);
  35   TEST_CTYPE(towupper);
  36 #endif /* __OPTIMIZE__ */
  37 }
  38
  39 int main (void)
  40 {
  41   return 0;
  42 }