Comment 0 for bug 1007457

Glibc version 2.15 has a bug causing spurious FP crashes when calling exp(). It has been reported here:

http://sourceware.org/bugzilla/show_bug.cgi?id=13705

You can find all the details, including a testcase and the patch for libm in this report. I found that the 64-bit version of precise ships a version of glibc that still has this bug. I have not tested the 32-bit version, but I assume it has the same problem.

I am one of the developers of the open source code Cloudy and this bug renders our code completely non-functional. I would therefore like to urge you to ship this patch as an update for the precise distribution, especially since this is a LTS release.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: libc6 2.15-0ubuntu10
ProcVersionSignature: Ubuntu 3.2.0-24.39-generic 3.2.16
Uname: Linux 3.2.0-24-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.0.1-0ubuntu8
Architecture: amd64
Date: Fri Jun 1 16:33:54 2012
InstallationMedia: Kubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
ProcEnviron:
 LC_TIME=en_DK.utf8
 TERM=vt100
 LANG=en_US.UTF-8
 SHELL=/bin/tcsh
SourcePackage: eglibc
UpgradeStatus: Upgraded to precise on 2012-05-07 (25 days ago)