For tracking additional information about heap blocks I'd like to store  
an additional word in each block. Has anybody experience with changing  
the compiler and run-time system accordingly?

The layout of blocks is defined by #defines in mlvalues.h; however, it  
wasn't obvious for me how to enlarge the header. Also, there must be  
corresponding definitions in the compiler source code.

I have asked this question essentially before but did not receive any  
useful pointers at that time.

	http://groups.google.com/group/fa.caml/browse_frm/thread/ 
b7ca503abf729e9b

-- Christian