f5256e16df
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@103516 91177308-0d34-0410-b5e6-96231b3b80d8
1 line
1.4 KiB
C++
1 line
1.4 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 distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// type_traits
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// is_empty
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#include <type_traits>
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template <class T>
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void test_is_empty()
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{
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static_assert( std::is_empty<T>::value, "");
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static_assert( std::is_empty<const T>::value, "");
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static_assert( std::is_empty<volatile T>::value, "");
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static_assert( std::is_empty<const volatile T>::value, "");
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}
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template <class T>
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void test_is_not_empty()
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{
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static_assert(!std::is_empty<T>::value, "");
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static_assert(!std::is_empty<const T>::value, "");
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static_assert(!std::is_empty<volatile T>::value, "");
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static_assert(!std::is_empty<const volatile T>::value, "");
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}
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class Empty
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{
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};
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class NotEmpty
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{
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virtual ~NotEmpty();
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};
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union Union {};
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struct bit_zero
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{
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int : 0;
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};
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int main()
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{
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test_is_not_empty<void>();
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test_is_not_empty<int&>();
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test_is_not_empty<int>();
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test_is_not_empty<double>();
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test_is_not_empty<int*>();
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test_is_not_empty<const int*>();
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test_is_not_empty<char[3]>();
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test_is_not_empty<char[3]>();
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test_is_not_empty<Union>();
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test_is_not_empty<NotEmpty>();
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test_is_empty<Empty>();
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test_is_empty<bit_zero>();
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}
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