🚀 go-pugleaf

In article <8rmjdtcv4ngqtjnbci7gbq1vg7tjmlqh6r@4ax.com>,
 Doug Crocker <dcrocker@newsNOSPAMguy.com> wrote:

>Can anyone explain this one? Is there a patch or something we don't
>have?  I have a function with 3 UInt32 in it when I set one variable
>to a value all 3 get changed to that value here is an example
>
>
>static Boolean VarTest()
>{
>  UInt16    recordNum;
>  Int32     TotRecords;
>  UInt32    error;
>
>  recordNum = 1;    // when recordNum is set to 1 TotRecords and error
>                    //  are also set to 1
>  error = 0;        // now error, recordNum and error are set to 0
>  TotRecords = 99;  // here all 3 are set to 99
>
>  return 1;
>}
>
>Using new copy of CodeWarrior 7 under windows 98.
>
>Any ideas on this and/or how to fix it?

There is nothing to fix. The compiler is using the same register to 
store all 3 variables because the way you use them allows it to do that 
(i.e. the lifetimes of the variables do not overlap).

If you did something like

a = 1;
b = 2;
c = 3;

if (a == 1) {
   a = 1;
} else if (b == 2) {
   b = 2;
} else if (c == 3) {
   c = 3;
}

then their lifetimes would overlap and the compiler would not optimize 
that away.

meeroh
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