commit 42cbe7a2aa2339b22bf34cb7fa69bdd856d65a60
author Louis Dionne <ldionne@apple.com> Thu Jan 24 19:09:22 2019 +0000
committer Louis Dionne <ldionne@apple.com> Thu Jan 24 19:09:22 2019 +0000
tree 90531b4a0d35ecd9b990ba20d7d11e4ca01c184c
parent 2a895e80879c69fc230b0e3c98cbb330ce8e3775

[libcxx] Portability fix: unordered_set and unordered_multiset iterators are not required to be the same

The unordered_set and unordered_multiset iterators are specified in the standard as follows:

using iterator             = implementation-defined; // see [container.requirements]
using const_iterator       = implementation-defined; // see [container.requirements]
using local_iterator       = implementation-defined; // see [container.requirements]
using const_local_iterator = implementation-defined; // see [container.requirements]

The pairs iterator/const_iterator and local_iterator/const_local_iterator
are not required to be the same. The reasonable requirement would be that
iterator can convert to const_iterator and local_iterator can convert to
const_local_iterator. This patch weakens the check and makes the test
more portable.

Reviewed as https://reviews.llvm.org/D56493.
Thanks to Andrey Maksimov for the patch.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@352083 91177308-0d34-0410-b5e6-96231b3b80d8