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2017-01-23 Ed Schonberg <schonberg@adacore.com> * sem_ch4.adb (Try_Primitive_Operations, Is_Valid_First_Argument_Of): argument is valid if it is a derived type with unknown discriminants that matches its underlying record view. * exp_util.adb (Expand_Subtype_From_Expr): Do not expand expression if its type is derived from a limited type with unknown discriminants, because the expansion (which is a call) must be expanded in the enclosing context to add the proper build- in-place parameters to the call. * lib.ads, exp_ch9.adb: Minor fixes in comments. From-SVN: r244790
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