1 // RUN: %clang_cc1 -verify %s
2
3 // If the object being deleted has incomplete class type at the point of
4 // deletion and the complete class has a non-trivial destructor or a
5 // deallocation function, the behavior is undefined.
6
7 // The trivial case.
8 class T0; // expected-note {{forward declaration}}
f0(T0 * a)9 void f0(T0 *a) { delete a; } // expected-warning {{deleting pointer to incomplete type}}
10 class T0 { ~T0(); };
11
12 // The trivial case, inside a template instantiation.
13 template<typename T>
~T1_AT1_A14 struct T1_A { T *x; ~T1_A() { delete x; } }; // expected-warning {{deleting pointer to incomplete type}}
15 class T1_B; // expected-note {{forward declaration}}
f0()16 void f0() { T1_A<T1_B> x; } // expected-note {{in instantiation of member function}}
17
18 // This case depends on when we check T2_C::f0.
19 class T2_A;
20 template<typename T>
f0T2_B21 struct T2_B { void f0(T *a) { delete a; } };
f0T2_C22 struct T2_C { T2_B<T2_A> x; void f0(T2_A *a) { x.f0(a); } };
f0(T2_A * a)23 void f0(T2_A *a) { T2_C x; x.f0(a); }
24 class T2_A { };
25
26 // An alternate version of the same.
27 class T3_A;
28 template<typename T>
29 struct T3_B {
f0T3_B30 void f0(T *a) {
31 delete a; // expected-error{{calling a private destructor of class 'T3_A'}}
32 }
33 };
34
35 struct T3_C {
36 T3_B<T3_A> x;
f0T3_C37 void f0(T3_A *a) {
38 x.f0(a); // expected-note{{in instantiation of member function 'T3_B<T3_A>::f0' requested here}}
39 }
40 };
41
f0(T3_A * a)42 void f0(T3_A *a) { T3_C x; x.f0(a); }
43 class T3_A {
44 private:
45 ~T3_A(); // expected-note{{declared private here}}
46 };
47