void zzz (char *s1, char *s2, int len, int *q)
{
int z = 5;
unsigned int i, b;
struct { char a[z]; } x;
for (i = 0; i < len; i++)
s1[i] = s2[i];
b = z & 0x3;
len += (b == 0 ? 0 : 1) + z;
*q = len;
foo (x, x);
}