On Fri, 7 Feb 2014 13:55:27 +0000, Pommier, Rex wrote: > >That depends on if the fix PTF contains all the elements in the >PE-PTF or only some of them. If it contains all then it can SUP. If >it does not it must PRE to pick up the elements that it does not >contain - Note this can only occur if PE-PTF has more than one >element. When it contains only one, the fix can SUP(PE-PTF) and >should contain all of PE-PTF's PREs and SUPs. > It's possible that the PE PTF exposed a functional defect in another, older element not in the PE PTF. If the fix PTF replaces only that element, it is not required to PRE and must not SUP the PE PTF (provided that the fix is downward-compatible).
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