[PATCH] D37958: [libc++] Correctly propagate user-defined lookup_classname().

[Tim Shen via Phabricator via cfe-commits]

timshen created this revision.
Herald added a subscriber: sanjoy.
Herald added a reviewer: EricWF.

Always lookup the class name, even when the traits type is regex_traits<>.
The lookup happens at regex compile time, so it shouldn't affect the performance.

I also added ja_JP.UTF-8 as a common locale.


https://reviews.llvm.org/D37958

Files:
  libcxx/include/regex
  libcxx/test/std/re/re.traits/lookup_classname_user_defined.pass.cpp
  libcxx/utils/libcxx/test/target_info.py

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