Re: core dump triggered by garbage collection (?)

[Richard Stallman]

    #19 0x0810f00e in lisp_free (block=0x8be41b0) at alloc.c:630
    #20 0x081130dc in gc_sweep () at alloc.c:5270

To learn something this crash, it is necessary to analyze the data
being operated on in those two frames, and try to figure out what was
inconsistent in the data (and what the data were being used for).
Knowing that, we might be able to figure out the code that created
the invalid data.

This is not easy, but I don't know of any substitute for it.