Running gdb (or adb, the HP/UX version) on the core file just gives me a back trace with no real information, other than the fact that segmentation fault caused the error. I already knew that. :-(

We don't have Devel::Trace installed, but I suspect it would just make the bug go into hiding again: adding the "-s" flag makes the bug go away.

By running a shell script, I determined that the minimum name that the program needed to be named to trigger the bug was 16 characters long. The bug only manifests itself when run from a certain directory, as well. Perhaps something involving a minimum path size is affecting it.

Certain changes to whitespace don't make the bug go away; others do. Reducing the size of certain comments can trigger/hide the bug.

This bug is very confusing: changes to comments affect it, suggesting that there is a problem with how the code gets parsed, yet it runs until the end of the program before dumping core.

--Ytrew

In reply to Re^2: Techniques for isolating bugs in perl by Ytrew
in thread Techniques for isolating bugs in perl by Ytrew

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