id,summary,reporter,owner,description,type,status,priority,milestone,component,version,resolution,keywords,cc,os,architecture,failure,difficulty,testcase,blockedby,blocking,related
1980,sporadic segmentation faults,maeder,igloo,"Our big interactive hets application sometimes produces segmentation faults that are hard to reproduce. They happened before with ghc-6.6.1 and ghc-6.8.1 and I was able to get gdb output and output when compiled with -debug (and some RTS flag when calling):

http://trac.informatik.uni-bremen.de:8080/hets/ticket/448#comment:4
http://trac.informatik.uni-bremen.de:8080/hets/ticket/448#comment:9

Maybe the linux kernel plays a role:
{{{
Linux leibniz 2.6.18.8-0.5-default #1 SMP Fri Jun 22 12:17:53 UTC 2007 i686 i686 i386 GNU/Linux
gcc (GCC) 4.1.2 20061115 (prerelease) (SUSE Linux)
}}}

For ghc-6.8.2 I could also reproduce segmentation faults, but they somehow disappear after a couple of retries.

However installing prerequisites, building, and calling our hets application is not a trivial task.

http://trac.informatik.uni-bremen.de:8080/hets/wiki/HetsForDevelopers
http://www.dfki.de/sks/hets/src-distribution/versions/Hets/INSTALL

Does anybody have suggestions what we might try or ideas about the reason?

Regards Christian",merge,closed,normal,6.8.3,Runtime System,6.8.2,fixed,,,Unknown/Multiple,Unknown/Multiple,,Unknown,,,,