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/* { dg-do compile } */
/* { dg-options "-O2" } */
 
int
zzz (char *s1, char *s2, int len, int *q)
{
  int z = 5;
  unsigned int i, b;
  struct s { char a[z]; };
  struct s x;
 
  extern int foo (int, ...) __attribute__((pure));
 
  for (i = 0; i < len; i++)
    s1[i] = s2[i];
 
  b = z & 0x3;
 
  len += (b == 0 ? 0 : 1) + z;
 
  *q = len;
  return foo (z, x, x);
}