gcc/testsuite/gcc.dg/20001023-1.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O2 -fomit-frame-pointer" } */
   3
   4 extern void abort (void);
   5 extern void exit (int);
   6
   7 unsigned char a[256], b[256], c[256], d[256];
   8
   9 void foo(unsigned char *x, int y, unsigned char *z)
  10 {
  11 }
  12
  13 void bar(int x, ...)
  14 {
  15 }
  16
  17 void baz(int y)
  18 {
  19   if (y != 0x10)
  20     abort();
  21 }
  22
  23 void test(int x, unsigned char *y)
  24 {
  25   unsigned char g,h,j, k[5],l[5], m[30];
  26   int i;
  27
  28   bar(x, y[0], y[1], y[2], y[3], y[4], y[5], y[6], y[7], y[8], y[9]);
  29   for (i = 5; --i >= 0; )
  30     k[i] = y[5 + i] ^ a[i] ^ c[i];
  31
  32   foo(&m[29], sizeof m, k);
  33   g = d[x] ^ c[x];
  34   bar(x, d[x], x, c[x]);
  35   baz(g);
  36   for (i = 5, h = 0; --i >= 0; h = y[i])
  37     {
  38       j = m[25 + i] ^ y[i];
  39       j = b[j] ^ g;
  40       k[i] = c[j] ^ h;
  41     }
  42   for (i = 5, h = 0; --i >= 0; h = k[i])
  43     {
  44       j = m[20 + i] ^ k[i];
  45       j = b[j] ^ g;
  46       l[i] = c[j] ^ h;
  47     }
  48   for (i = 5, h = 0; --i >= 0; h = l[i]) {
  49     j = m[15 + i] ^ l[i];
  50     j = b[j] ^ g;
  51     j = c[j] ^ h;
  52     k[i] = a[j] ^ c[j];
  53   }
  54 }
  55
  56 int main()
  57 {
  58   c[4] = 0xdc;
  59   d[4] = 0xcc;
  60   test(4, a);
  61   exit(0);
  62 }