Intermittent crash on compression / OS X

[Ryan Carsten Schmidt]

pbzip2 intermittently crashes upon decompressing bz2 files, even ones it itself created just moments before. Retrying works without a crash.

The MacPorts package management system stores all installed packages as tar.bz2 archives, and was recently enhanced to support creating and decompressing these using pbzip2, if it happens to be installed with MacPorts. It is on my system, and though it usually works fine, the number of times it does not is greater than 0, which results in failure to install whatever package I'm currently trying to install.

I'm attaching two OS X crash logs of this situation that I experienced today. Let me know if you need any further info to diagnose this.

[Yavor Nikolov (yavor-nikolov)]

Hi Ryan, thanks for reporting that issue.
Unfortunately I have no OS X to test with right no. Would you be able to comple pbzip2 in debug mode and reproduce the issue with it. (It would be helpful to have the debug output)?

[Ryan Carsten Schmidt (z-launchpad-d)]

I can certainly compile it in debug mode, if you'll tell me what flags or environment variables to compile with to accomplish that, and if the issue occurs again I can send you whatever information is produced.

[Yavor Nikolov (yavor-nikolov)]

Just take uncomment following in Makefile and compile it:
CXXFLAGS += -DPBZIP_DEBUG

[Ryan Carsten Schmidt (z-launchpad-d)]

Thanks; done. I reproduced the crash today; here's the relevant part of the MacPorts log. I was mistaken: it crashes when compressing, not when decompressing.

[Yavor Nikolov (yavor-nikolov)]

Hi Ryan, would you be able to test if the following patched version solves the issue: https://code.launchpad.net/~pbzip2/pbzip2/bug-1399589-crash-on-compress-on-os-x

[Ryan Carsten Schmidt (z-launchpad-d)]

Thanks. I haven't seen the crash again since applying your fix on the 7th.

[Yavor Nikolov (yavor-nikolov)]

Great. Thanks for your feedback!