On 27 May 2010, at 12:53, jonat...@mugginsoft.com wrote: >> >> iPhone device and 64-bit Mac should not have this problem. The compiler and >> runtime cooperate to allow the runtime to move the subclass's ivars out of >> the way if the superclass grows. >> http://sealiesoftware.com/blog/archive/2009/01/27/objc_explain_Non-fragile_ivars.html >> > I presume that 32 cannot not get this bit of TLC for backwards compatibility > reasons.
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