1  /* { dg-do compile } */
       2  /* { dg-options "-O1 -m31 -mzarch -fstack-clash-protection" } */
       3  
       4  extern void c(char*);
       5  
       6  void
       7  a() {
       8    char *b = __builtin_alloca(3);
       9    c(b);
      10  }