1  /* { dg-do compile } */
       2  /* { dg-options "-O2" } */
       3  /* { dg-require-effective-target alloca } */
       4  
       5  int
       6  zzz (char *s1, char *s2, int len, int *q)
       7  {
       8    int z = 5;
       9    unsigned int i, b;
      10    struct s { char a[z]; };
      11    struct s x;
      12  
      13    extern int foo (int, ...) __attribute__((pure));
      14  
      15    for (i = 0; i < len; i++)
      16      s1[i] = s2[i];
      17  
      18    b = z & 0x3;
      19  
      20    len += (b == 0 ? 0 : 1) + z;
      21  
      22    *q = len;
      23    return foo (z, x, x);
      24  }