Bug#623431: 3depict just segfaults, nomatter what

[D Haley]

Hi,

Thanks for the report. The problem appears to be occurring in a library I use, not in the main program -- at least according to your backtrace. 

Unfortunately, I am having troubles reproducing this (i.e. this works on my system) -- I am running under a virtual machine with the same version of libs installed and same arch -- most confusing. 

A few things we can do to try to work this out:

* Can you confirm that the MD5 sum for your STIX_b.vfm is the following?
cbd96ccef9d42d9d6d7eb48c41b86494  /usr/share/mathgl/fonts/STIX_b.vfm

* If you move the STIX_b.vfm file out of the way, does the program still crash at the same point? There is an unchecked sscanf, which grabs a value used by the ::Internal function which might be causing problems (in mathgl source package, mgl_font.cpp:651.

* Are you able to generate a core dump by changing your ulimit value? I *might* be able to read that and understand more about the program state; though I have not tried passing core dumps across machines before...

* Do you have the development experience (and the time) to place debugging print statements  in read_data? (mgl/mgl_font.cpp:604 in the mathgl package)

Alternatively, if you could run valgrind over the program, and post that, this *might* help to understand what is going on. The current level of information is not enough to determine the underlying problem, unfortunately.

Thanks,

D. Haley