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Author SHA1 Message Date
Eric Fiselier f9127593a9 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
 2017-01-21 00:02:12 +00:00
Eric Fiselier 918f32fc7b Make variant's index part of the hash value 
llvm-svn: 288554
 2016-12-02 23:38:31 +00:00
Eric Fiselier 0d3d8de014 Implement C++17 <variant>. Patch from Michael Park! 
This patch was reviewed as https://reviews.llvm.org/D23263.

llvm-svn: 288547
 2016-12-02 23:00:05 +00:00
Eric Fiselier 80e66ac1d3 Add <variant> tests but disable them for libc++ 
llvm-svn: 287728
 2016-11-23 01:02:51 +00:00