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Re: [patch] Leave errno unchanged by successful std::stoi etc

From: Jonathan Wakely <jwakely at redhat dot com>
To: Martin Sebor <msebor at gmail dot com>
Cc: Jakub Jelinek <jakub at redhat dot com>, libstdc++ at gcc dot gnu dot org, gcc-patches at gcc dot gnu dot org
Date: Thu, 1 Oct 2015 12:24:21 +0100
Subject: Re: [patch] Leave errno unchanged by successful std::stoi etc
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References: <20150929151541 dot GZ12094 at redhat dot com> <20150929152515 dot GJ1847 at tucnak dot redhat dot com> <20150929161020 dot GA12094 at redhat dot com> <20150929161520 dot GK1847 at tucnak dot redhat dot com> <560AC168 dot 5010500 at gmail dot com> <20150930132713 dot GE12094 at redhat dot com>

commit 502928c8061343e82e982e06299c11d465f64b6c
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Wed Sep 30 14:10:58 2015 +0100

   Save-and-restore errno more carefully in libstdc++

* doc/xml/manual/diagnostics.xml: Document use of errno.

   	* config/locale/generic/c_locale.cc (_Save_errno): New helper.
   	(__convert_to_v): Use _Save_errno.
   	* include/ext/string_conversions.h (__stoa): Only restore errno when
   	it isn't set to non-zero.

Committed to trunk.

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