[PATCH] D28224: [libcxx, regex] Throw exception after too many steps.

[Tim Shen via Phabricator via cfe-commits]

timshen created this revision.
timshen added a reviewer: mclow.lists.
timshen added a subscriber: cfe-commits.
Herald added a reviewer: EricWF.

This prevents the backtracking regex engines from "hanging forever"
under certain input.


https://reviews.llvm.org/D28224

Files:
  libcxx/include/regex
  libcxx/test/std/re/re.alg/re.alg.match/exponential.pass.cpp
  libcxx/test/std/re/re.alg/re.alg.search/exponential.pass.cpp

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