I assume this is coming from a Vim plugin, but I get no leads on where to look. What's the best way of debugging it?
Vim: Caught deadly signal SEGV
Vim: Finished.
[1] 8119 segmentation fault
This has been here for four hours, I'll give you what help I can. The classical way of debugging programs is with gdb:
$ ulimit -c unlimited
$ # [do whatever generates the segmentation fault]
$ ls -ld *core* # see new core file that I'll call $core
$ file $core # see program name that I'll call $program
$ gdb $program $core
(gdb) bt
That should hopefully give a backtrace of function calls. If you're unlucky you'll get lots of ??, which means that debugging symbols are not enabled. You could get around that with access to the original program objects, but I don't suppose you'd have those.
Instead, one might also run
$ gdb $program
(gdb) run arg1 arg2 argetc
However my experience with this is almost only with non-UI programs. I have no idea if either method will work when the segmentation fault happens inside a vim plugin . . .
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Thanks for the answer -- I imagine that Vim would have specific hooks for debugging, but I suppose that
gdbwould be a valid approach. I guess I was thinking that plugins would need something more specific. Has anyone else usedgdbto debug Vim plugins? – Sauce McBoss Apr 11 '16 at 1:27 -
you most likely need debug symbols, otherwise this is not really helpful. Another hint might be to use
catchsegv programto find why it is segfaulting. – Christian Brabandt Jul 21 '16 at 19:30
:h debug-mode. – statox♦ Apr 11 '16 at 11:57