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[Bug guile/17923] scheme exception about invalid object in a backtrace


https://sourceware.org/bugzilla/show_bug.cgi?id=17923

--- Comment #2 from Marcus Daniels <mdaniels at lanl dot gov> ---
"It would be good to verify what is causing the problem.
[IOW, how is f_smob->inferior becoming NULL?]"

Unfortunately, it is only happening on a secure network with a secure code and
so it would be illegal for me to disclose any more details.  I perhaps could
find some other code with other breakpoints that acts this way.

One clarification is that the inferior is not really crashing or exiting.  It
is a periodic thing that during a run that some of the frequent breakpoints
have this property where the exception in frame-valid? occurs (obviously it
would happen in the other frame-* functions too if the precaution of modified
frame-valid? is not used).   Suppressing it in the way I said means I can't get
parent frame info, but come the next breakpoint (or the next 100), the frame-*
functions seem to work fine.

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