1 //===-------------------------- test_aux_runtime.cpp ----------------------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9
10 // UNSUPPORTED: libcxxabi-no-exceptions
11
12 #include <typeinfo>
13 #include <iostream>
14
15 // Test taken from 5.2.8.2
16 // When typeid is applied to a glvalue expression whose type is a polymorphic
17 // class type, (10.3), the result refers to a std::type_info object
18 // representing the type of the most derived object (1.8) (that is, the
19 // dynamic type) to which the glvalue refers. If the glvalue expression is
20 // obtained by applying the unary * operator to a pointer(68) and the pointer
21 // is a null pointer value (4.10), the typeid expression throws the
22 // std::bad_typeid exception (18.7.3).
23 //
24 // 68) If p is an expression of pointer type, then *p, (*p), *(p),
25 // ((*p)), *((p)), and so on all meet this requirement.
bad_typeid_test()26 bool bad_typeid_test () {
27 class A { virtual void f() {}};
28 class B { virtual void g() {}};
29
30 B *bp = NULL;
31 try {bool b = typeid(*bp) == typeid (A); ((void)b); }
32 catch ( const std::bad_typeid &) { return true; }
33 return false;
34 }
35
36
37 // The value of a failed cast to pointer type is the null pointer value of
38 // the required result type. A failed cast to reference type throws
39 // std::bad_cast (18.7.2).
bad_cast_test()40 bool bad_cast_test () {
41 class A { virtual void f() {}};
42 class B { virtual void g() {}};
43 class D : public virtual A, private B {};
44
45 D d;
46 B *bp = (B*)&d; // cast needed to break protection
47 try { D &dr = dynamic_cast<D&> (*bp); ((void)dr); }
48 catch ( const std::bad_cast & ) { return true; }
49 return false;
50 }
51
main()52 int main ( ) {
53 int ret_val = 0;
54
55 if ( !bad_typeid_test ()) {
56 std::cerr << "TypeID test failed!" << std::endl;
57 ret_val = 1;
58 }
59
60 if ( !bad_cast_test ()) {
61 std::cerr << "Bad cast test failed!" << std::endl;
62 ret_val = 1;
63 }
64
65 return ret_val;
66 }
67