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80 lines
2.2 KiB
C++
80 lines
2.2 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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// UNSUPPORTED: c++98, c++03, c++11, c++14
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// <type_traits>
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// template <class T> struct is_aggregate;
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// template <class T> constexpr bool is_aggregate_v = is_aggregate<T>::value;
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#include <type_traits>
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#include "test_macros.h"
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template <class T>
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void test_true()
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{
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#if !defined(_LIBCPP_HAS_NO_IS_AGGREGATE)
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static_assert( std::is_aggregate<T>::value, "");
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static_assert( std::is_aggregate<const T>::value, "");
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static_assert( std::is_aggregate<volatile T>::value, "");
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static_assert( std::is_aggregate<const volatile T>::value, "");
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static_assert( std::is_aggregate_v<T>, "");
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static_assert( std::is_aggregate_v<const T>, "");
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static_assert( std::is_aggregate_v<volatile T>, "");
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static_assert( std::is_aggregate_v<const volatile T>, "");
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#endif
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}
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template <class T>
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void test_false()
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{
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#if !defined(_LIBCPP_HAS_NO_IS_AGGREGATE)
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static_assert(!std::is_aggregate<T>::value, "");
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static_assert(!std::is_aggregate<const T>::value, "");
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static_assert(!std::is_aggregate<volatile T>::value, "");
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static_assert(!std::is_aggregate<const volatile T>::value, "");
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static_assert(!std::is_aggregate_v<T>, "");
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static_assert(!std::is_aggregate_v<const T>, "");
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static_assert(!std::is_aggregate_v<volatile T>, "");
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static_assert(!std::is_aggregate_v<const volatile T>, "");
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#endif
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}
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struct Aggregate {};
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struct HasCons { HasCons(int); };
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struct HasPriv {
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void PreventUnusedPrivateMemberWarning();
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private:
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int x;
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};
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struct Union { int x; void* y; };
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int main ()
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{
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{
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test_false<void>();
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test_false<int>();
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test_false<void*>();
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test_false<void()>();
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test_false<void() const>();
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test_false<void(Aggregate::*)(int) const>();
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test_false<Aggregate&>();
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test_false<HasCons>();
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test_false<HasPriv>();
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}
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{
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test_true<Aggregate>();
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test_true<Aggregate[]>();
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test_true<Aggregate[42][101]>();
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test_true<Union>();
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}
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}
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