1 //===----------------------------------------------------------------------===// 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 // <exception> 11 12 // class nested_exception; 13 14 // nested_exception& operator=(const nested_exception&) throw() = default; 15 16 #include <exception> 17 #include <cassert> 18 19 class A 20 { 21 int data_; 22 public: A(int data)23 explicit A(int data) : data_(data) {} 24 operator ==(const A & x,const A & y)25 friend bool operator==(const A& x, const A& y) {return x.data_ == y.data_;} 26 }; 27 main()28int main() 29 { 30 { 31 std::nested_exception e0; 32 std::nested_exception e; 33 e = e0; 34 assert(e.nested_ptr() == nullptr); 35 } 36 { 37 try 38 { 39 throw A(2); 40 assert(false); 41 } 42 catch (const A&) 43 { 44 std::nested_exception e0; 45 std::nested_exception e; 46 e = e0; 47 assert(e.nested_ptr() != nullptr); 48 try 49 { 50 rethrow_exception(e.nested_ptr()); 51 assert(false); 52 } 53 catch (const A& a) 54 { 55 assert(a == A(2)); 56 } 57 } 58 } 59 } 60