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 // <unordered_map> 11 12 // void swap(unordered_map& c) 13 // noexcept(!allocator_type::propagate_on_container_swap::value || 14 // __is_nothrow_swappable<allocator_type>::value); 15 16 // This tests a conforming extension 17 18 #include <unordered_map> 19 #include <cassert> 20 21 #include "../../../MoveOnly.h" 22 #include "../../../test_allocator.h" 23 24 template <class T> 25 struct some_comp 26 { 27 typedef T value_type; 28 29 some_comp() {} 30 some_comp(const some_comp&) {} 31 }; 32 33 template <class T> 34 struct some_hash 35 { 36 typedef T value_type; 37 some_hash() {} 38 some_hash(const some_hash&); 39 }; 40 41 int main() 42 { 43 #if __has_feature(cxx_noexcept) 44 { 45 typedef std::unordered_map<MoveOnly, MoveOnly> C; 46 C c1, c2; 47 static_assert(noexcept(swap(c1, c2)), ""); 48 } 49 { 50 typedef std::unordered_map<MoveOnly, MoveOnly, std::hash<MoveOnly>, 51 std::equal_to<MoveOnly>, test_allocator<MoveOnly>> C; 52 C c1, c2; 53 static_assert(noexcept(swap(c1, c2)), ""); 54 } 55 { 56 typedef std::unordered_map<MoveOnly, MoveOnly, std::hash<MoveOnly>, 57 std::equal_to<MoveOnly>, other_allocator<MoveOnly>> C; 58 C c1, c2; 59 static_assert(noexcept(swap(c1, c2)), ""); 60 } 61 { 62 typedef std::unordered_map<MoveOnly, MoveOnly, some_hash<MoveOnly>> C; 63 C c1, c2; 64 static_assert(!noexcept(swap(c1, c2)), ""); 65 } 66 { 67 typedef std::unordered_map<MoveOnly, MoveOnly, std::hash<MoveOnly>, 68 some_comp<MoveOnly>> C; 69 C c1, c2; 70 static_assert(!noexcept(swap(c1, c2)), ""); 71 } 72 #endif 73 } 74
