How do I get GDB to break on a GLib assertion failure?

Question

Somewhere in a mass of code that I did not write (but I am trying to debug), an assertion fails in the GLib library:

(process:31987): GLib-CRITICAL **: g_has         


        

Answer 1

You should add an environment variable like this:

G_DEBUG=fatal_warnings gdb ...

Answer 2

Break on g_log(). This covers all cases like g_warning(), g_critical(), etc.