Re: [Pyobjc-dev] applicationShouldOpenUntitledFile_

[<bb...@ma...>]

On Sunday, Feb 2, 2003, at 16:44 US/Eastern, Ronald Oussoren wrote:
> I've just checked in a patch that seems to fix this. From what I have 
> seen it looks like Objective-C methods that say they return an char 
> actually return an int, the method stub we insert in the Objective-C 
> class did return char. Because of this, the return value seen by the 
> caller of the method contains our return value as well as 3 bytes of 
> garbage. If your lucky these bytes are all 0. Hmm, methods returning 
> shorts probably have a simular problem.

Use the source, Luke!

Seriously -- the objc runtime source is available in Darwin.

Going from memory -- yes, anything 4 bytes or less is returned as a 4 
byte value and then downcast as necessary.

Anything greater than 4 bytes is basically a struct return type and the 
calling convention is slightly different.

b.bum