On 08/04/2011 08:10 AM, Sven Barth wrote:
The code that calculates the indices and handles other references
could have side effects, so the compiler would not be able to optimize
them. If you use this code once inside the "with"-clause you tell the
compiler to do that calculation only once and that you are aware of
possible side effects (or thus not occuring side effects).
OK, with C a possible compiler-generated the hidden pointer variable is
as "non-volatile" as an explicit variable without a "volatile" spec
would be, while in Pascal virtually everything is considered volatile.
this in fact might ask for side-effects.
-Michael
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