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 // REQUIRES: c++98 || c++03 11 12 // <utility> 13 14 // template <class T1, class T2> struct pair 15 16 // pair& operator=(pair const& p); 17 18 #include <utility> 19 #include <memory> 20 #include <cassert> 21 22 struct NonAssignable { 23 NonAssignable() {} 24 private: 25 NonAssignable& operator=(NonAssignable const&); 26 }; 27 28 struct Incomplete; 29 extern Incomplete inc_obj; 30 31 int main() 32 { 33 { 34 // Test that we don't constrain the assignment operator in C++03 mode. 35 // Since we don't have access control SFINAE having pair evaluate SFINAE 36 // may cause a hard error. 37 typedef std::pair<int, NonAssignable> P; 38 static_assert(std::is_copy_assignable<P>::value, ""); 39 } 40 { 41 typedef std::pair<int, Incomplete&> P; 42 static_assert(std::is_copy_assignable<P>::value, ""); 43 P p(42, inc_obj); 44 assert(&p.second == &inc_obj); 45 } 46 } 47 48 struct Incomplete {}; 49 Incomplete inc_obj; 50
