default_noexcept.pass.cpp (2351B)
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 // unordered_map() 13 // noexcept( 14 // is_nothrow_default_constructible<allocator_type>::value && 15 // is_nothrow_default_constructible<key_compare>::value && 16 // is_nothrow_copy_constructible<key_compare>::value); 17 18 // This tests a conforming extension 19 20 // UNSUPPORTED: c++98, c++03 21 22 #include <unordered_map> 23 #include <cassert> 24 25 #include "test_macros.h" 26 #include "MoveOnly.h" 27 #include "test_allocator.h" 28 #include "../../../test_hash.h" 29 30 template <class T> 31 struct some_comp 32 { 33 typedef T value_type; 34 some_comp(); 35 some_comp(const some_comp&); 36 bool operator()(const T&, const T&) const { return false; } 37 }; 38 39 template <class T> 40 struct some_hash 41 { 42 typedef T value_type; 43 some_hash(); 44 some_hash(const some_hash&); 45 46 std::size_t operator()(T const&) const; 47 }; 48 49 int main() 50 { 51 #if defined(_LIBCPP_VERSION) 52 { 53 typedef std::unordered_map<MoveOnly, MoveOnly> C; 54 static_assert(std::is_nothrow_default_constructible<C>::value, ""); 55 } 56 { 57 typedef std::unordered_map<MoveOnly, MoveOnly, std::hash<MoveOnly>, 58 std::equal_to<MoveOnly>, test_allocator<std::pair<const MoveOnly, MoveOnly>>> C; 59 static_assert(std::is_nothrow_default_constructible<C>::value, ""); 60 } 61 #endif // _LIBCPP_VERSION 62 { 63 typedef std::unordered_map<MoveOnly, MoveOnly, std::hash<MoveOnly>, 64 std::equal_to<MoveOnly>, other_allocator<std::pair<const MoveOnly, MoveOnly>>> C; 65 static_assert(!std::is_nothrow_default_constructible<C>::value, ""); 66 } 67 { 68 typedef std::unordered_map<MoveOnly, MoveOnly, some_hash<MoveOnly>> C; 69 static_assert(!std::is_nothrow_default_constructible<C>::value, ""); 70 } 71 { 72 typedef std::unordered_map<MoveOnly, MoveOnly, std::hash<MoveOnly>, 73 some_comp<MoveOnly>> C; 74 static_assert(!std::is_nothrow_default_constructible<C>::value, ""); 75 } 76 }