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Re: Garbage Collection in 10.4
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Re: Garbage Collection in 10.4


  • Subject: Re: Garbage Collection in 10.4
  • From: Bill Bumgarner <email@hidden>
  • Date: Tue, 6 Nov 2007 09:22:18 -0800

On Nov 6, 2007, at 9:04 AM, Hans van der Meer wrote:
My question is sligthly different: If I switch over to 10.5 and opt for garbage collection in my Cocoa programs, will these programs run under 10.4? Or do I have to maintain 2 versions, one with gc for 10.5 and one with manually managed memory for running on 10.4?
(I need to keep a 10.4 system running)

As Shawn said, "No" -- No, you can't compile a dual mode chunk of code on Leopard and deploy it on Tiger, GC or non-GC. When compiling dual mode code (or GC only code), the compiler generates references to symbols that do not exist on Tiger.


The real question, though, is why would you want to deploy with GC enabled on Leopard if you have to support non-GC on Tiger? Why bother incurring the cost of maintaining, debugging, and optimizing your code for two different memory management models?

If you need to support Tiger, stick with non-GC.

b.bum


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