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32-bit macOS uses the older fragile ObjC runtime. Meaning no macOS frameworks present on 32-bit macOS could adopt newer features. In fact they couldn’t even add
by xenadu02 7y ago
32-bit macOS uses the older fragile ObjC runtime. Meaning no macOS frameworks present on 32-bit macOS could adopt newer features. In fact they couldn’t even add new ivars because that changes the class layout and would be ABI-breaking.
That’s beside the increased disk space and memory used having two copies of everything.