Changes

Debugging Fennec can be trickier than Firefox because it uses multiple processes.

For example to debug reftests in fennec on desktop linux the following recipe works:

python runreftest.py --debugger=gdb TEST_PATH/reftest.list

once inside gdb# this will break on fork calls(gdb) catch fork

# this will break on exec fork calls(gdb) catch exec

(gdb) runcatch fork

# the first fork this will be for glx probing and can be ignor(gdb) continuebreak on exec calls

# the next fork is the content process, make sure we follow into it(gdb) set follow-fork-mode child(gdb) continuecatch exec

(gdb) run  #the first fork will be for glx probing and can be ignor (gdb) continue  #the next fork is the content process, make sure we follow into it (gdb) set follow-fork-mode child (gdb) continue  # this will break on the exec (gdb) break some_function_in_the content process  <pre>sdqwd</pre>