I have a B::*OP object which is a pointer to an OP object in a specific location in memory ($$op). I would like to copy the OP object to some other location, I don't really care where, and then install something else into the location that I just copied the OP out of. Other things that already have a pointer to this op would now have a pointer to the new thing which might itself point to the old thing.

Not all OP objects are the same size so do I have to be concerned that a 28 byte hole would have to accomodate a 56 byte op? Is there slack space built in?

In reply to Moving an OP and replacing it by diotalevi

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