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* Implement P0513R0 - "Poisoning the Hash"Eric Fiselier2017-01-211-0/+31
| | | | | | | | | | | | | | | | | | | | | 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
* libc++ implements its' hash objects as deriving from std::unary_function, ↵Marshall Clow2015-01-071-2/+2
| | | | | | and the tests test for that. STL @ MS pointed out that the standard doesn't requie these objects to derive from unary_function, and so the tests should not require that either. Change the tests to check for the embedded typedefs - which ARE required. No change to the library. llvm-svn: 225403
* Move test into test/std subdirectory.Eric Fiselier2014-12-201-0/+48
llvm-svn: 224658
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