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Implement P0513R0 - "Poisoning the Hash"

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Summary:
Exactly what the title says.

This patch also adds a `std::hash<nullptr_t>` specialization in C++17, but it was not added by this paper and I can't find the actual paper that adds it.

See http://wg21.link/P0513R0 for more info.

If there are no comments in the next couple of days I'll commit this

Reviewers: mclow.lists, K-ballo, EricWF

Reviewed By: EricWF

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D28938

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@292684 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eric Fiselier
2017-01-21 00:02:12 +00:00
parent ee856f131d
commit 952eaecfc6
31 changed files with 1470 additions and 653 deletions
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8
include/__functional_base
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@@ -16,6 +16,7 @@
#include <typeinfo>
#include <exception>
#include <new>
#include <utility>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
@@ -23,13 +24,6 @@
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _Arg, class _Result>
struct _LIBCPP_TEMPLATE_VIS unary_function
{
typedef _Arg argument_type;
typedef _Result result_type;
};
template <class _Arg1, class _Arg2, class _Result>
struct _LIBCPP_TEMPLATE_VIS binary_function
{