Dennis Lee Bieber  wrote:
> On Tue, 29 Sep 2020 00:27:34 -0000 (UTC), bob prohaska 
> declaimed the following:
>
>>
>>bob@raspberrypi:~/brlcad-code/build $ mged
>>BRL-CAD Release 7.32.1  Geometry Editor (MGED)
>>    Mon, 28 Sep 2020 16:16:25 -0700, Compilation 2
>>    bob@raspberrypi
>>
>>ERROR: alloc size=0 (cnt=0, sz=4) dm name array
>>
>>ERROR: bu_malloc(0)
>>
>>ERROR: bu_malloc(0)
>>
>>Saving stack trace to mged-5459-bomb.log
>>
>
>         That looks like some significant code error... Attempt to allocate a
> chunk of memory of SIZE 0!
>
>         It might be worth studying that log to see if you can determine where
> in the code this call occurs, and from there track down whatever
> computation is being used to determine the size to be allocated. (Note:
> that error message actually comes from a level below bu_malloc -- both
> bu_malloc and bu_calloc use the same alloc() function, with a parameter
> identifying which m/c mode to run in --
> https://brlcad.org/docs/doxygen-r64112/d6/dcd/malloc_8c_source.xhtml ).
>
>

I've put the backtrace at
http://www.zefox.net/~fbsd/rpi4/mged-9973-bomb.log
if anybody wants to take a look.

The only things I can recgonize as errors in the logfile are a couple
of "permission denied" errors apparently caused by the backtrace generation
process. I don't think that's relevant, but perhaps I should point out that
the build and run were done as a regular user, with only the install using
root credentials.

There's already a support request in to the brlcad project, to which I've
added my $.02 so hopefully somebody will take note. Someday.....

Thanks to everyone for reading and replying!

bob prohaska

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