Troubleshooting segfault

[Jonathan Hayward <christos jonathan hayward gmail com>]

I've been developing an application, and now it crashes shortly after
starting; it segfaults (secondary damage?) either on the first attempt
to strncpy() from a text input, or gtk_image_new_from_pixbuf(). Both of
these were working reliably, and I haven't touched that area of code
(but double checked just in case).

How should I go about troubleshooting a segfault early on in execution?
What kind of problems should I be looking for?The code is at
http://haywardfamily.org/jonathan/gtk_tms.tgz .



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