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Re: getting Objective-C++ to work

On Wednesday, September 10, 2003, at 01:56 PM, Glen Fisher wrote:

In addition, it's very much *not* safe to pass C++ objects to Objective-C methods, or to have an Objective-C method return a C++ object. The object is copied to or from the method using a bitwise copy; the class's copy constructor isn't invoked, nor is the class's destructor called for the copy.

This scared me, so I looked over my code to see if I was sending a C++ object in by value instead of by reference or pointer. In only two cases I was. But the copy constructor was being called fine. I also had a C++ object returned a few times by an Objective C method to a C++ caller, and that was working fine. What am I missing? This is with GCC 3.1 on the ancient April 2002 dev tools.

I wrote up a test program, and no destructor was called on the object passed in, though.

- jim
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