45 lines
1.3 KiB
C++
45 lines
1.3 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// <tuple>
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// template <class... Types> class tuple;
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// template <class... Types, class Alloc>
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// struct uses_allocator<tuple<Types...>, Alloc> : true_type { };
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#include <tuple>
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#include <type_traits>
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struct A {};
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int main()
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{
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{
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typedef std::tuple<> T;
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static_assert((std::is_base_of<std::true_type,
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std::uses_allocator<T, A>>::value), "");
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}
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{
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typedef std::tuple<int> T;
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static_assert((std::is_base_of<std::true_type,
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std::uses_allocator<T, A>>::value), "");
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}
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{
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typedef std::tuple<char, int> T;
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static_assert((std::is_base_of<std::true_type,
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std::uses_allocator<T, A>>::value), "");
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}
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{
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typedef std::tuple<double&, char, int> T;
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static_assert((std::is_base_of<std::true_type,
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std::uses_allocator<T, A>>::value), "");
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}
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}
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