ElectricFence & malloc debugging [Update]

[Steve Emsley]

Thanks Marcus (and Scott C. for suggesting it in the first place).

ElectricFence helps debug malloc errors eg. overruns when using
dynamically allocated arrays. It works!

To use:
   In your Makefile add: OTHERLIBS=-lefence
   Set the variable EF_ALIGNMENT: export EF_ALIGNMENT=8

Run your program in gdb and EF will cause a SIGSEGV at overruns which,
without EF, usually get by the debugger.

Hope this helps.
Steve.
-- 
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 Steve Emsley                 Ecosystems Analysis & Management Group
 address@hidden              University of Warwick, England
 http://www.oikos.warwick.ac.uk/~sme/           (+44) (0)1598 753648
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