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47 lines
1.2 KiB
C++
47 lines
1.2 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 U1, class U2> tuple(const pair<U1, U2>& u);
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// UNSUPPORTED: c++98, c++03
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#include <tuple>
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#include <utility>
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#include <cassert>
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#include "test_macros.h"
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int main()
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{
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{
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typedef std::pair<long, char> T0;
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typedef std::tuple<long long, short> T1;
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T0 t0(2, 'a');
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T1 t1 = t0;
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assert(std::get<0>(t1) == 2);
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assert(std::get<1>(t1) == short('a'));
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}
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#if TEST_STD_VER > 11
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{
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typedef std::pair<long, char> P0;
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typedef std::tuple<long long, short> T1;
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constexpr P0 p0(2, 'a');
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constexpr T1 t1 = p0;
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static_assert(std::get<0>(t1) == std::get<0>(p0), "");
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static_assert(std::get<1>(t1) == std::get<1>(p0), "");
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static_assert(std::get<0>(t1) == 2, "");
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static_assert(std::get<1>(t1) == short('a'), "");
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}
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#endif
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}
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