duplicate a variable!!!!
VAUGHAN Jay
jay.vaughan@thalesgroup.com
Fri Apr 1 12:55:00 GMT 2011
> That would be my question too. I know a little (but not much) about
> hardening code, and I am aware of some of the issues if there can be
> unexpected outside influences on your program (such as radiation or
> hardware issues causing changes to memory locations). I can't see any
> way in which some sort of general duplication of variables would help.
The 'proper' way to do it is with C macro's that can be used to declare, increment, and
decrement, values in a redundnat structure containing both the inverted value as well as
non-inverted value, a macro for setting the value (which also sets the inverted value),
and a macro (and error handling) for checking the value and ensuring that it is the
inverse of the inverted-values before it is used ..
--
; Thales Austria GmbH
Jay Vaughan, Scheydgasse 41
Software Developer 1210 Vienna AUSTRIA
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