a90c6dd460
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@224658 91177308-0d34-0410-b5e6-96231b3b80d8
39 lines
896 B
C++
39 lines
896 B
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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// <iterator>
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// template<class NotAnIterator>
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// struct iterator_traits
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// {
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// };
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#include <iterator>
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struct not_an_iterator
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{
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};
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template <class _Tp>
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struct has_value_type
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{
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private:
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struct two {char lx; char lxx;};
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template <class _Up> static two test(...);
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template <class _Up> static char test(typename _Up::value_type* = 0);
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public:
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static const bool value = sizeof(test<_Tp>(0)) == 1;
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};
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int main()
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{
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typedef std::iterator_traits<not_an_iterator> It;
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static_assert(!(has_value_type<It>::value), "");
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}
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