Generate a trace-malloc dump by building with <code>ac_add_options --enable-trace-malloc</code> and then passing <code>--trace-malloc FILENAME</code> when you start Firefox.
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==== Boehm GC ====
The Boehm GC is a garbage collector for C/C++ programs that can be used to debug leaks in a program that does not require a garbage collector. It can be used with leaksoup or leak-soup.pl to find the roots of graphs of leaked objects. The leak detection tools find leaks using garbage collection while the app is running (which tends to hide many of the largest leaked object graphs, which can usually be reached through global variables). Some #defines can be flipped in xpcom/base/nsLeakDetector.cpp to cause it to print out all objects leaked at shutdown (into a different file). These shutdown leaks will include both one-time shutdown leaks (which aren't really a serious problem, but make it harder to find real leaks) and real leaks that had previously been rooted (as far as the GC was concerned) through a global variable. Some of the trace-malloc tools imitate its output format and therefore some of the processing tools are compatible. It works on Mac (Classic) and Linux (although slightly better on Mac). On Linux it can be built with DASHDASHenable-boehm. On Mac, (?).
'''Update (2006-06-13): The code integrating the Boehm GC in Mozilla has not been tested for a number of years and is unlikely to work anymore.'''
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==== Valgrind ====
