[PATCH] D53879: Make libc++'s versioning namespace customizable

[Louis Dionne via Phabricator]

ldionne added inline comments.


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Comment at: docs/BuildingLibcxx.rst:373
+    When providing a custom namespace, it's the users responsibility to ensure the name won't cause
+    conflicts with other names defined by libc++, both now and in the future.
+
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The problem with that is that they can't know what names we will want to use. If someone used `__5` today, they would be within their rights because they can't know that we'll want to use it in the future. We have to reserve something for our own usage.


https://reviews.llvm.org/D53879