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Message: [QUOTE="Jerry Coffin, post: 2986951"] The definition of PODs was _intended_ to support two separate things: 1) static initialization, and 2) layout compatibility with C. Allowing ctors wouldn't (at least as things are normally implemented) affect layout compatibility with C. It could, however, remove the possibility of static initialization. OTOH, I think this requirement could be loosened somewhat without any problem: at the very least, I believe a ctor that contained only an intialization list (no body) and all the initialization values were constant expressions could still support static initialization. A body that did essentially the same things (simple assignments, rvalues are all constant expressions) would be easy to support as well. [/QUOTE]