[OGo-Developer] _e_info in NSException.h

[Sebastian Reitenbach]

Hi,
developer@opengroupware.org wrote: 
> On 14.01.2008, at 11:35, Sebastian Reitenbach wrote:
> > while changing to gnustep-make 2.0 I tried to compile sope against
> > gnustep-base 2.15.2. In sope there is a private variable of  
> > NSException
> > used: _e_info. which got replaced by _reserved.
> > Therefore I asked about it on the discuss-gnustep@ mailing list.
> > As it is generally a bad idea to access private methods and  
> > variables of I
> > thing Richard is right, and it should be changed in sope.
> 
> Hm, yes. This is because before MacOS 10.2(?) there was a public - 
> setUserInfo: method. This was removed from the public headers but is  
> still provided in the implementation (of Cocoa).
> 
> Now I think GNUstep removed the method completely (not just from the  
> header), hence I needed to provide an own implementation (which used  
> the _e_info private field ...).
> 
> > What would be the preferred way?
> > Adding a general NSException(UserInfo) category?
> > Or change all occurences where this happens, I think it is only one  
> > place in NGImap4...
> 
> We should (carefully!) remove all calls to -setUserInfo: (check  
> whether userinfo fields are required by callers etc).
Ok, I'll take a look, and will try to remove/replace these calls.


> 
> > As I only see ifdefs for GNUSTEP_BASE_LIBRARY but not for Cocoa, and
> > Richards test program fails on Cocoa, I wonder how is this working  
> > on Cocoa?
> 
> As mentioned I think that Cocoa does not define -setUserInfo: in a  
> header file, but NSException still has the method internally. Probably  
> a lot of 'old' Cocoa applications depend on it.
> 
yeah, that at least explains what I thought it might be the way.

thanks
Sebastian