gcc/testsuite/gcc.c-torture/execute/memcpy-1.c

   1 #include <string.h>
   2
   3 #if defined (STACK_SIZE)
   4 #define MEMCPY_SIZE (STACK_SIZE / 3)
   5 #else
   6 #define MEMCPY_SIZE (1 << 17)
   7 #endif
   8
   9
  10 void *copy (void *o, const void *i, unsigned l)
  11 {
  12   return memcpy (o, i, l);
  13 }
  14
  15 main ()
  16 {
  17   unsigned i;
  18   unsigned char src[MEMCPY_SIZE];
  19   unsigned char dst[MEMCPY_SIZE];
  20
  21   for (i = 0; i < MEMCPY_SIZE; i++)
  22     src[i] = (unsigned char) i,  dst[i] = 0;
  23
  24   (void) memcpy (dst, src, MEMCPY_SIZE / 128);
  25
  26   for (i = 0; i < MEMCPY_SIZE / 128; i++)
  27     if (dst[i] != (unsigned char) i)
  28       abort ();
  29
  30   (void) memset (dst, 1, MEMCPY_SIZE / 128);
  31
  32   for (i = 0; i < MEMCPY_SIZE / 128; i++)
  33     if (dst[i] != 1)
  34       abort ();
  35
  36   (void) memcpy (dst, src, MEMCPY_SIZE);
  37
  38   for (i = 0; i < MEMCPY_SIZE; i++)
  39     if (dst[i] != (unsigned char) i)
  40       abort ();
  41
  42   (void) memset (dst, 0, MEMCPY_SIZE);
  43
  44   for (i = 0; i < MEMCPY_SIZE; i++)
  45     if (dst[i] != 0)
  46       abort ();
  47
  48   (void) copy (dst, src, MEMCPY_SIZE / 128);
  49
  50   for (i = 0; i < MEMCPY_SIZE / 128; i++)
  51     if (dst[i] != (unsigned char) i)
  52       abort ();
  53
  54   (void) memset (dst, 0, MEMCPY_SIZE);
  55
  56   (void) copy (dst, src, MEMCPY_SIZE);
  57
  58   for (i = 0; i < MEMCPY_SIZE; i++)
  59     if (dst[i] != (unsigned char) i)
  60       abort ();
  61
  62   exit (0);
  63 }