// { dg-do run  }int i;int fail;class ca {public:  ca() {    if (++i != 1)      fail = 1;  }  virtual ~ca() {    if (++i != 4)      fail = 4;  }};class cb {public:  cb(const ca &rca) {    if (++i != 2)      fail = 2;  }  virtual ~cb() {    if (++i != 3)      fail = 3;  }};void foo(const cb &rcb) {}int main(int argc, char **argv) {  foo(cb(ca()));  return fail;}