52 struct C2  struct
57     explicit C2(int id) : B(id-2), id_(id) {count++;}  in C2()  argument
58     C2(const C2& a) : B(a.id_-2), id_(a.id_) {count++;}  in C2()  argument
59     ~C2() {count--;}  in ~C2()  argument
62 int C2::count = 0;
65     : C1, C2
69     explicit A(int id) : B(id+3), C1(id-1), C2(id-2), id_(id) {count++;}  in A()
70     A(const A& a) : B(a.id_+3), C1(a.id_-1), C2(a.id_-2),  id_(a.id_) {count++;}  in A()
95         assert(static_cast<const C2*>(a)->id_ == 3);  in f2()
103     catch (const C2*)  in f2()
129     catch (const C2*)  in f3()
142     catch (const C2* c2)  // can catch C2  in f4()
174     catch (const C2*)  in f5()