4684ddb6aa
- import libcxx - reduce targets to the one when compiled as a tools Change-Id: Iabb8427f80ff8e89463559a28bcb8b4f2bdbc496
55 lines
1.3 KiB
C++
55 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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// <memory>
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// template <class Alloc>
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// struct allocator_traits
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// {
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// typedef Alloc::const_pointer
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// | pointer_traits<pointer>::rebind<const value_type>
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// ...
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// };
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#include <memory>
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#include <type_traits>
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template <class T>
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struct Ptr {};
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template <class T>
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struct A
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{
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typedef T value_type;
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typedef Ptr<T> pointer;
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};
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template <class T>
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struct B
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{
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typedef T value_type;
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};
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template <class T>
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struct CPtr {};
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template <class T>
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struct C
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{
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typedef T value_type;
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typedef CPtr<T> pointer;
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typedef CPtr<const T> const_pointer;
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};
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int main()
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{
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static_assert((std::is_same<std::allocator_traits<A<char> >::const_pointer, Ptr<const char> >::value), "");
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static_assert((std::is_same<std::allocator_traits<B<char> >::const_pointer, const char*>::value), "");
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static_assert((std::is_same<std::allocator_traits<C<char> >::const_pointer, CPtr<const char> >::value), "");
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}
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