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 // <utility> 11 12 // template <class T1, class T2> struct pair 13 14 // void swap(pair& p); 15 16 #include <utility> 17 #include <cassert> 18 19 struct S { 20 int i; 21 S() : i(0) {} 22 S(int j) : i(j) {} 23 S * operator& () { assert(false); return this; } 24 S const * operator& () const { assert(false); return this; } 25 bool operator==(int x) const { return i == x; } 26 }; 27 28 int main() 29 { 30 { 31 typedef std::pair<int, short> P1; 32 P1 p1(3, static_cast<short>(4)); 33 P1 p2(5, static_cast<short>(6)); 34 p1.swap(p2); 35 assert(p1.first == 5); 36 assert(p1.second == 6); 37 assert(p2.first == 3); 38 assert(p2.second == 4); 39 } 40 { 41 typedef std::pair<int, S> P1; 42 P1 p1(3, S(4)); 43 P1 p2(5, S(6)); 44 p1.swap(p2); 45 assert(p1.first == 5); 46 assert(p1.second == 6); 47 assert(p2.first == 3); 48 assert(p2.second == 4); 49 } 50 } 51
