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 19class A 20{ 21 int data_; 22public: 23 explicit A(int data) : data_(data) {} 24 25 friend bool operator==(const A& x, const A& y) {return x.data_ == y.data_;} 26}; 27 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