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 // UNSUPPORTED: c++98, c++03 11 12 // <memory> 13 14 // template <class OuterAlloc, class... InnerAllocs> 15 // class scoped_allocator_adaptor 16 17 // typedef see below is_always_equal; 18 19 #include <scoped_allocator> 20 #include <type_traits> 21 22 #include "allocators.h" 23 #include "min_allocator.h" 24 25 int main() 26 { 27 // sanity checks 28 static_assert( (std::is_same< 29 std::allocator_traits<A1<int>>::is_always_equal, std::false_type>::value 30 ), "" ); 31 32 static_assert( (std::is_same< 33 std::allocator_traits<min_allocator<int>>::is_always_equal, std::true_type>::value 34 ), "" ); 35 36 // wrapping one allocator 37 static_assert( 38 (std::is_same< 39 std::scoped_allocator_adaptor<A1<int>>::is_always_equal, 40 std::allocator_traits<A1<int>>::is_always_equal 41 >::value), ""); 42 43 // wrapping one allocator 44 static_assert( 45 (std::is_same< 46 std::scoped_allocator_adaptor<min_allocator<int>>::is_always_equal, 47 std::allocator_traits<min_allocator<int>>::is_always_equal 48 >::value), ""); 49 50 // wrapping two allocators (check the values instead of the types) 51 static_assert(( 52 std::scoped_allocator_adaptor<A1<int>, A2<int>>::is_always_equal::value == 53 ( std::allocator_traits<A1<int>>::is_always_equal::value && 54 std::allocator_traits<A2<int>>::is_always_equal::value) 55 ), ""); 56 57 // wrapping two allocators (check the values instead of the types) 58 static_assert(( 59 std::scoped_allocator_adaptor<A1<int>, min_allocator<int>>::is_always_equal::value == 60 ( std::allocator_traits<A1<int>>::is_always_equal::value && 61 std::allocator_traits<min_allocator<int>>::is_always_equal::value) 62 ), ""); 63 64 65 // wrapping three allocators (check the values instead of the types) 66 static_assert(( 67 std::scoped_allocator_adaptor<A1<int>, A2<int>, A3<int>>::is_always_equal::value == 68 ( std::allocator_traits<A1<int>>::is_always_equal::value && 69 std::allocator_traits<A2<int>>::is_always_equal::value && 70 std::allocator_traits<A3<int>>::is_always_equal::value) 71 ), ""); 72 } 73
