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2017-04-25 Hristian Kirtchev <kirtchev@adacore.com> * exp_util.adb (Known_Non_Null): Moved to Sem_Util. (Known_Null): Moved to Sem_Util. * exp_util.ads (Known_Non_Null): Moved to Sem_Util. (Known_Null): Moved to Sem_Util. * sem_util.adb Add new enumeration type Null_Status_Kind. (Known_Non_Null): Moved from Exp_Util. Most of the logic in this routine is now carried out by Null_Status. (Known_Null): Moved from Exp_Util. Most of the logic in this routine is now carried out by Null_Status. (Null_Status): New routine. * sem_util.ads (Known_Non_Null): Moved from Exp_Util. (Known_Null): Moved from Exp_Util. 2017-04-25 Ed Schonberg <schonberg@adacore.com> * sem_ch6.adb (Analyze_Expression_Function): Do not report an error on the return type of an expression function that is a completion, if the type is derived from a generic formal type. 2017-04-25 Ed Schonberg <schonberg@adacore.com> * sem_dim.adb (Dimensions_Of_Operand): The dimensions of a type conversion are those of the target type. 2017-04-25 Bob Duff <duff@adacore.com> * a-clrefi.adb: Minor cleanup. From-SVN: r247236
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