[Bug 217946] x11-fm/thunar dumps core on file or dir rename

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=217946

--- Comment #21 from Guido Falsi <madpilot at FreeBSD.org> ---
(In reply to Kevin Zheng from comment #13)
> Created attachment 187655 [details]
> Backtrace with different issue in thunar
> 
> I have this backtrace from Thunar. The crash doesn't seem to do with kqueue
> but still occurs in the file monitor.

I had a look at the backtrace. Unluckily it's missing data for stack positions
1 and 2, so we don't know exactly what's happening there.

Anyway, it fails in a compare function, which is called via a pointer, so I
don't know which one that is. Some other code from some consumer set that
callback, that information can be extracted only at runtime with a debugger.

I'm almost sure the crash is caused by that compare function.

I have been unable to reproduce this crash, I'm using en_US locale, maybe
you're using a different one? That could cause string comparison errors, if the
code has some defects.

Otherwise, could you recompile some more parts with debugging symbols and try
again? maybe we can catch the missing calls.

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