forked from mirror/libcxxabi
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
67 lines
2.1 KiB
C++
67 lines
2.1 KiB
C++
//===-------------------------- test_aux_runtime.cpp ----------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is dual licensed under the MIT and the University of Illinois Open
|
|
// Source Licenses. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// UNSUPPORTED: libcxxabi-no-exceptions
|
|
|
|
#include <typeinfo>
|
|
#include <iostream>
|
|
|
|
// Test taken from 5.2.8.2
|
|
// When typeid is applied to a glvalue expression whose type is a polymorphic
|
|
// class type, (10.3), the result refers to a std::type_info object
|
|
// representing the type of the most derived object (1.8) (that is, the
|
|
// dynamic type) to which the glvalue refers. If the glvalue expression is
|
|
// obtained by applying the unary * operator to a pointer(68) and the pointer
|
|
// is a null pointer value (4.10), the typeid expression throws the
|
|
// std::bad_typeid exception (18.7.3).
|
|
//
|
|
// 68) If p is an expression of pointer type, then *p, (*p), *(p),
|
|
// ((*p)), *((p)), and so on all meet this requirement.
|
|
bool bad_typeid_test () {
|
|
class A { virtual void f() {}};
|
|
class B { virtual void g() {}};
|
|
|
|
B *bp = NULL;
|
|
try {bool b = typeid(*bp) == typeid (A); ((void)b); }
|
|
catch ( const std::bad_typeid &) { return true; }
|
|
return false;
|
|
}
|
|
|
|
|
|
// The value of a failed cast to pointer type is the null pointer value of
|
|
// the required result type. A failed cast to reference type throws
|
|
// std::bad_cast (18.7.2).
|
|
bool bad_cast_test () {
|
|
class A { virtual void f() {}};
|
|
class B { virtual void g() {}};
|
|
class D : public virtual A, private B {};
|
|
|
|
D d;
|
|
B *bp = (B*)&d; // cast needed to break protection
|
|
try { D &dr = dynamic_cast<D&> (*bp); ((void)dr); }
|
|
catch ( const std::bad_cast & ) { return true; }
|
|
return false;
|
|
}
|
|
|
|
int main ( ) {
|
|
int ret_val = 0;
|
|
|
|
if ( !bad_typeid_test ()) {
|
|
std::cerr << "TypeID test failed!" << std::endl;
|
|
ret_val = 1;
|
|
}
|
|
|
|
if ( !bad_cast_test ()) {
|
|
std::cerr << "Bad cast test failed!" << std::endl;
|
|
ret_val = 1;
|
|
}
|
|
|
|
return ret_val;
|
|
}
|