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> I'm interested in other people's opinions of my interpretation of the > standard here. I think the construct you present is legal C++. Your observation is correct: that the declaration of t uses a non-dependent array size, and the definition uses a dependent array size. This does not make the template definition ill-formed. In the definition, the name is dependent, and thus not bound at template definition time. Instead, the compiler should check at instantiation time whether declaration and definition match. As far as I can tell, it is not possible to instantiate the template so that the instantiation is in error. In any case, the diagnostics should be produced at the point of instantiation. Just my 0.02EUR, Martin