On Jun 12, 2013, at 00:42 , Quincey Morris 
<quinceymor...@rivergatesoftware.com> wrote:

> If you archive a 64-bit NSNotFound, it's no longer NSNotFound when unarchived 
> on a 32-bit architecture, and vice versa.

Oops, just to clarify:

I don't mean there's anything wrong with the archiving or unarchiving per se.

It's no longer NSNotFound when you encode/decode a NSUInteger/NSInteger 
variable, because there'll be truncation or "incorrect" sign extension of the 
scalar value, in one direction or the other.

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