On Sep 15, 2008, at 5:16 PM, Alex Reynolds wrote:
I also wanted to learn a bit about Objective-C++.
What are the issues that involve exceptions? I find that
NSExceptions I have in my larger application still work when I poke
those.
In the 32-bit runtime, Objective-C exceptions and C++ exceptions use
incompatible mechanisms. Objective-C exceptions do not unwind the
stack and invoke destructors of all automatic variables between the
throw and the catch. C++ exceptions, while unwinding the stack, don't
invoke Objective-C @finally clauses. Objective-C exceptions can't be
caught by C++ catch clauses, and vice versa.
In the 64-bit runtime, these limitations have been removed: http://developer.apple.com/releasenotes/Cocoa/RN-ObjectiveC/index.html#/
/apple_ref/doc/uid/TP40004309-DontLinkElementID_11
Cheers,
Ken
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