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

   1 /* Copyright (C) 2004  Free Software Foundation.
   2
   3    Verify that built-in ctype function attributes are correctly set by
   4    the compiler.
   5
   6    Written by Kaveh Ghazi, 2004-03-23.  */
   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(isalnum);
  23   TEST_CTYPE(isalpha);
  24   TEST_CTYPE(isascii);
  25   TEST_CTYPE(isblank);
  26   TEST_CTYPE(iscntrl);
  27   TEST_CTYPE(isdigit);
  28   TEST_CTYPE(isgraph);
  29   TEST_CTYPE(islower);
  30   TEST_CTYPE(isprint);
  31   TEST_CTYPE(ispunct);
  32   TEST_CTYPE(isspace);
  33   TEST_CTYPE(isupper);
  34   TEST_CTYPE(isxdigit);
  35   TEST_CTYPE(toascii);
  36   TEST_CTYPE(tolower);
  37   TEST_CTYPE(toupper);
  38 #endif /* __OPTIMIZE__ */
  39 }
  40
  41 int main (void)
  42 {
  43   return 0;
  44 }