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[Patch, libstdc++/64584, libstdc++/64585] Clear basic_regex after imbue and make assign exception tolerant

From: Tim Shen <timshen at google dot com>
To: "libstdc++" <libstdc++ at gcc dot gnu dot org>, gcc-patches <gcc-patches at gcc dot gnu dot org>
Date: Wed, 14 Jan 2015 20:53:01 -0800
Subject: [Patch, libstdc++/64584, libstdc++/64585] Clear basic_regex after imbue and make assign exception tolerant
Authentication-results: sourceware.org; auth=none

It's irony that I spent non-trivial effort to make sure basic_regex
still works after imbuing. :) But now with this specification, the
implementation can be cleaner (e.g. _M_original_str is removed).

Bootstrapped and tested.

I'll make a 4.9 patch later.

Thanks!


-- 
Regards,
Tim Shen

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- Re: [Patch, libstdc++/64584, libstdc++/64585] Clear basic_regex after imbue and make assign exception tolerant
  - From: Tim Shen
- Re: [Patch, libstdc++/64584, libstdc++/64585] Clear basic_regex after imbue and make assign exception tolerant
  - From: Jonathan Wakely

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