gcc/testsuite/gcc.c-torture/execute/builtins/strcspn.c

   1 /* Copyright (C) 2000, 2004  Free Software Foundation.
   2
   3    Ensure all expected transformations of builtin strcspn occur and
   4    perform correctly.
   5
   6    Written by Kaveh R. Ghazi, 11/27/2000.  */
   7
   8 extern void abort (void);
   9 typedef __SIZE_TYPE__ size_t;
  10 extern size_t strcspn (const char *, const char *);
  11 extern char *strcpy (char *, const char *);
  12
  13 void
  14 main_test (void)
  15 {
  16   const char *const s1 = "hello world";
  17   char dst[64], *d2;
  18
  19   if (strcspn (s1, "hello") != 0)
  20     abort();
  21   if (strcspn (s1, "z") != 11)
  22     abort();
  23   if (strcspn (s1+4, "z") != 7)
  24     abort();
  25   if (strcspn (s1, "hello world") != 0)
  26     abort();
  27   if (strcspn (s1, "") != 11)
  28     abort();
  29   strcpy (dst, s1);
  30   if (strcspn (dst, "") != 11)
  31     abort();
  32   strcpy (dst, s1); d2 = dst;
  33   if (strcspn (++d2, "") != 10 || d2 != dst+1)
  34     abort();
  35   strcpy (dst, s1); d2 = dst;
  36   if (strcspn (++d2+5, "") != 5 || d2 != dst+1)
  37     abort();
  38   if (strcspn ("", s1) != 0)
  39     abort();
  40   strcpy (dst, s1);
  41   if (strcspn ("", dst) != 0)
  42     abort();
  43   strcpy (dst, s1); d2 = dst;
  44   if (strcspn ("", ++d2) != 0 || d2 != dst+1)
  45     abort();
  46   strcpy (dst, s1); d2 = dst;
  47   if (strcspn ("", ++d2+5) != 0 || d2 != dst+1)
  48     abort();
  49
  50   /* Test at least one instance of the __builtin_ style.  We do this
  51      to ensure that it works and that the prototype is correct.  */
  52   if (__builtin_strcspn (s1, "z") != 11)
  53     abort();
  54 }