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[Bug 1614966] Re: libc has broken cos implementation

To: group.of.nepali.translators@xxxxxxxxxxxxxxxxxxx
From: Launchpad Bug Tracker <1614966@xxxxxxxxxxxxxxxxxx>
Date: Tue, 25 Oct 2016 12:01:49 -0000
Reply-to: Bug 1614966 <1614966@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

This bug was fixed in the package glibc - 2.23-0ubuntu4

---------------
glibc (2.23-0ubuntu4) xenial; urgency=medium

  * debian/rules.d/tarball.mk: Apply --no-renames to make the diff readable.
  * debian/patches/git-updates.diff: Update from release/2.23/master branch:
    - Include fix for potential makecontext() hang on ARMv7 (CVE-2016-6323)
    - Include fix for SEGV in sock_eq with nss_hesiod module (LP: #1571456)
    - Include malloc fixes, addressing multithread deadlocks (LP: #1630302)
    - debian/patches/hurd-i386/cvs-libpthread.so.diff: Dropped, upstreamed.
    - debian/patches/any/submitted-argp-attribute.diff: Dropped, upstreamed.
    - debian/patches/hurd-i386/tg-hurdsig-fixes-2.diff: Rebased to upstream.
  * debian/patches/ubuntu/local-altlocaledir.diff: Updated to latest version
    from Martin that limits scope to LC_MESSAGES, fixing segv (LP: #1577460)
  * debian/patches/any/cvs-cos-precision.diff: Fix cos() bugs (LP: #1614966)
  * debian/testsuite-xfail-debian.mk: Allow nptl/tst-signal6 to fail on ARM.

 -- Adam Conrad <adconrad@xxxxxxxxxx>  Fri, 14 Oct 2016 00:00:34 -0600

** Changed in: glibc (Ubuntu Xenial)
       Status: Fix Committed => Fix Released

** CVE added: http://www.cve.mitre.org/cgi-
bin/cvename.cgi?name=2016-6323

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https://bugs.launchpad.net/bugs/1614966

Title:
  libc has broken cos implementation

Status in glibc package in Ubuntu:
  Fix Released
Status in glibc source package in Xenial:
  Fix Released

Bug description:
  glibc 2.23 has a broken implementation of cos.

  To see that, enter "=cos(1.5689793435451356)" into gnumeric or localc.  A correct result is close
  to 0, but libc and thus gnumeric/localc return ~1.

  As per https://sourceware.org/bugzilla/show_bug.cgi?id=20357 this is
  fixed in 2.24

  Suggestion: backport fix for that.

  
  Seen on Ubuntu 16.04 (well, Mint 18).

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