[interfacekit] __malloc_hook ??


        Hi again :-)

        I'm trying to use the supposed debugging hooks for malloc & friends 
(see my previous email on BBlockCache weirdness for details why :).  
There's some function pointers declared in malloc.h, along the lines of 
__malloc_hook, etc.  However, trying to use these gives me link errors, 
and an 'nm libroot.so | grep malloc' doesn't turn up any likely 
candidates (there's only an sbrkhook data export - hmm maybe I can try 
that... *cringe*).
        Has anyone had any experience with this before?  Or maybe some better 
suggestions on how to go about tracking down exactly what's happening 
with BBlockCache?

        Thanks,

        Graham

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