1 //===----------------------------------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 // <tuple> 10 11 // template <class... Types> class tuple; 12 13 // template <class Alloc> 14 // tuple(allocator_arg_t, const Alloc& a, const tuple&); 15 16 // UNSUPPORTED: c++98, c++03 17 18 #include <tuple> 19 #include <cassert> 20 21 #include "allocators.h" 22 #include "../alloc_first.h" 23 #include "../alloc_last.h" 24 25 int main() 26 { 27 { 28 typedef std::tuple<> T; 29 T t0; 30 T t(std::allocator_arg, A1<int>(), t0); 31 } 32 { 33 typedef std::tuple<int> T; 34 T t0(2); 35 T t(std::allocator_arg, A1<int>(), t0); 36 assert(std::get<0>(t) == 2); 37 } 38 { 39 typedef std::tuple<alloc_first> T; 40 T t0(2); 41 alloc_first::allocator_constructed = false; 42 T t(std::allocator_arg, A1<int>(5), t0); 43 assert(alloc_first::allocator_constructed); 44 assert(std::get<0>(t) == 2); 45 } 46 { 47 typedef std::tuple<alloc_last> T; 48 T t0(2); 49 alloc_last::allocator_constructed = false; 50 T t(std::allocator_arg, A1<int>(5), t0); 51 assert(alloc_last::allocator_constructed); 52 assert(std::get<0>(t) == 2); 53 } 54 // testing extensions 55 #ifdef _LIBCPP_VERSION 56 { 57 typedef std::tuple<alloc_first, alloc_last> T; 58 T t0(2, 3); 59 alloc_first::allocator_constructed = false; 60 alloc_last::allocator_constructed = false; 61 T t(std::allocator_arg, A1<int>(5), t0); 62 assert(alloc_first::allocator_constructed); 63 assert(alloc_last::allocator_constructed); 64 assert(std::get<0>(t) == 2); 65 assert(std::get<1>(t) == 3); 66 } 67 { 68 typedef std::tuple<int, alloc_first, alloc_last> T; 69 T t0(1, 2, 3); 70 alloc_first::allocator_constructed = false; 71 alloc_last::allocator_constructed = false; 72 T t(std::allocator_arg, A1<int>(5), t0); 73 assert(alloc_first::allocator_constructed); 74 assert(alloc_last::allocator_constructed); 75 assert(std::get<0>(t) == 1); 76 assert(std::get<1>(t) == 2); 77 assert(std::get<2>(t) == 3); 78 } 79 #endif 80 } 81