[PATCH] Proposed Fix for LWG 2059: C++0x ambiguity problem with map::erase

[Eric Fiselier]

In http://reviews.llvm.org/D9408#164597, @EricWF wrote:

> Why were no erase methods added for `set`, `multiset`, `unordered_set`, and `unordered_multiset`?


Because const_iterator and iterator are the same type.

This patch LGTM but I would remove the `__cplusplus >= 201402L` blocks around the tests since the fix is applied in all standard versions.


http://reviews.llvm.org/D9408

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