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Re: another exception triggered by OGo in gnustep-base


From: Sebastian Reitenbach
Subject: Re: another exception triggered by OGo in gnustep-base
Date: Fri, 29 Jul 2011 19:25:14 +0200
User-agent: SOGoMail 1.3.8

 
On Friday, July 29, 2011 15:26 CEST, "Sebastian Reitenbach" <address@hidden> 
wrote: 
 
>  
> On Friday, July 29, 2011 15:00 CEST, David Chisnall <address@hidden> wrote: 
>  
> > On 29 Jul 2011, at 13:51, Sebastian Reitenbach wrote:
> > 
> > > I found this documentation here:
> > > http://developer.apple.com/library/mac/#documentation/Cocoa/Reference/Foundation/Classes/NSData_Class/Reference/Reference.html
> > > Initializes a newly allocated data object by adding to it length bytes of 
> > > data from the buffer bytes.
> > > 
> > > but it doesn't state that a subclass should implement it???
> > > 
> > > SkyDecodeWrapperData is a subclass of NSData, so I should implement that 
> > > method there?
> > 
> > I think this is a GNUstep bug.  The default implementation o 
> > initWithBytesNoCopy:length:freeWhenDone: should probably be releasing self 
> > and returning a new instance of the class that does support this 
> > initialiser (as happens in the placeholder data class).
> 

While fiddling around there, I found that NSDataMalloc implements 
initWithBytesNoCopy:length:freeWhenDone:, and I looked at it how it is done 
there, and implemented it similarly in OGos SkyDecodeWrapperData, which now 
works like a charm ;)

thanks,
Sebastian




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