Implement P0513R0 - "Poisoning the Hash"
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
llvm-svn: 292684
diff --git a/libcxx/include/__functional_base b/libcxx/include/__functional_base
index 05c9f06..4e2b7eb 100644
--- a/libcxx/include/__functional_base
+++ b/libcxx/include/__functional_base
@@ -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
{