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64-bit swizzling

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64-bit swizzling

Subject: 64-bit swizzling
From: Nick Zitzmann <email@hidden>
Date: Tue, 4 Nov 2008 13:15:05 -0700

I searched the archives and didn't see anything relevant...

Short question: How do I perform method swizzling in the 64-bit runtime?

Long question: I've got a 32-bit UB bundle. I'd like to compile that bundle for X86-64, but the bundle uses method swizzling to work around a bug in a third-party framework. The swizzling was done through calling class_getInstanceMethod() and then swapping the method_types and method_imp of the method returned.

This works fine on PPC and X86, but I'm getting "dereferencing pointer to incomplete type" errors on the lines attempting to alter the methods when building for X86-64. So I'm guessing the method I'm using above is not present in the 64-bit runtime, but what is its replacement?

Nick Zitzmann
<http://www.chronosnet.com/>

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