Re: Interesting Problem Code worked in 10.4 but not in 10.5

FROM : Jean-Daniel Dupas
DATE : Sun Jun 22 23:43:45 2008

Launch it with the debugger and check the stack when it crash.
Without any hint about the stack, we cannot really help you, but just 
give you some guess.

Le 22 juin 08 à 23:26, Clayton Leitch a écrit :

> See code below.  Get a error of “EXC_BAD_ACCESS” when I make entries 
> in the GUI.  Code used to work with no problems.  It appears that it 
> is doing an illegal substraction, which I think means the objects 
> are not being initialized with a value of 0.  At least that is my 
> guess.
> #import "MonthlyReport.h"
>
>
> @implementation MonthlyReport
> + (void)initialize
> {
>     if (self == [MonthlyReport class])
>     {
>         NSArray *keys = [NSArray arrayWithObjects: @"reportCumActualCost", 
> @"reportActualCost", @"reportPredictedCost", 
> @"reportCumPredictedCost", @"reportCumlativeInvoiceTotal", 
> @"reportMonthlyInvoiceAmount", nil];
>         [self setKeys:keys 
> triggerChangeNotificationsForDependentKey:@"reportCumDifference"];
>         [self setKeys:keys 
> triggerChangeNotificationsForDependentKey:@"reportCurrentDifference"];
>         [self setKeys:keys 
> triggerChangeNotificationsForDependentKey
> :@"reportPercentDifferenceMonth"];
>         [self setKeys:keys 
> triggerChangeNotificationsForDependentKey
> :@"reportPercentDifferenceCum"];
>         [self setKeys:keys 
> triggerChangeNotificationsForDependentKey
> :@"reportInvoiceMonthlyDifference"];
>         [self setKeys:keys 
> triggerChangeNotificationsForDependentKey
> :@"reportInvoiceCumlativeDifference"];
>     }
> }
>
> //Calculate differences
> - (NSDecimalNumber *)reportCurrentDifference;
> {
>     return [[self valueForKey:@"reportActualCost"] 
> decimalNumberBySubtracting: [self 
> valueForKey:@"reportPredictedCost"]];
> }
> - (NSDecimalNumber *)reportCumDifference;
> {
>     return [[self valueForKey:@"reportCumActualCost"] 
> decimalNumberBySubtracting: [self 
> valueForKey:@"reportCumPredictedCost"]];
> }
> - (NSDecimalNumber *)reportInvoiceMonthlyDifference;
> {
>     return [[self valueForKey:@"reportMonthlyInvoiceAmount"] 
> decimalNumberBySubtracting:[self valueForKey:@"reportActualCost"]];
> }
> - (NSDecimalNumber *)reportInvoiceCumlativeDifference;
> {
>     return [[self valueForKey:@"reportCumlativeInvoiceTotal"] 
> decimalNumberBySubtracting:[self valueForKey:@"reportCumActualCost"]];
> }
>
> //Calculate percents
> - (NSDecimalNumber *)reportPercentDifferenceMonth;
> {
>     return [[[self valueForKey:@"reportCurrentDifference"] 
> decimalNumberByDividingBy: [self 
> valueForKey:@"reportPredictedCost"]] 
> decimalNumberByMultiplyingByPowerOf10: (short)2];
> }
> - (NSDecimalNumber *)reportPercentDifferenceCum;
> {
>     return [[[self valueForKey:@"reportCumDifference"] 
> decimalNumberByDividingBy: [self 
> valueForKey:@"reportCumPredictedCost"]] 
> decimalNumberByMultiplyingByPowerOf10: (short)2];
> }
>
>
>
> @end
>
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