old-autovect-branch/gcc/testsuite/gcc.c-torture/execute/20000801-1.c

   1 extern void abort(void);
   2 extern void exit(int);
   3
   4 void
   5 foo (char *bp, unsigned n)
   6 {
   7   register char c;
   8   register char *ep = bp + n;
   9   register char *sp;
  10
  11   while (bp < ep)
  12     {
  13       sp = bp + 3;
  14       c = *sp;
  15       *sp = *bp;
  16       *bp++ = c;
  17       sp = bp + 1;
  18       c = *sp;
  19       *sp = *bp;
  20       *bp++ = c;
  21       bp += 2;
  22     }
  23 }
  24
  25 int main(void)
  26 {
  27   int one = 1;
  28
  29   if (sizeof(int) != 4 * sizeof(char))
  30     exit(0);
  31
  32   foo((char *)&one, sizeof(one));
  33   foo((char *)&one, sizeof(one));
  34
  35   if (one != 1)
  36     abort();
  37
  38   exit(0);
  39 }