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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); }