On 23 Mar 2012, at 8:18 AM, Eric Slosser wrote:

> I'm trying to use the NSTextFinder object on Lion, from an app whose base SDK 
> is Tiger.
…
> What am I doing wrong?
You're trying to use the NSTextFinder object on Lion, from an app whose base 
SDK is Tiger. Xcode is sensitive to what the base SDK is.

* Symbols exclusive to a later SDK than then base shouldn't be compilable or 
linkable at all. I'm unsure how you got past this barrier. This leads me to 
believe that either you've instituted a gigantic hack, or your description of 
your situation is inaccurate. Care to elaborate?

* To preserve backward compatibility, when OS version N detects that an 
application has been linked against SDK version (M < N), it does not provide 
bug-fixes or other changes that were instituted after version M. Even if you 
managed somehow to add NSTextFinder to your headers and libraries, Cocoa would 
not provide behavior that NSTextFinder may rely on.

But the fact that you could build at all suggests that I don't understand what 
you're doing. Could you clarify?

        — F


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