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2015-05-22 Bob Duff <duff@adacore.com> * exp_utils.ads, exp_utils.adb (Find_Optional_Prim_Op): New interface to return Empty when not found, so we can avoid handling Program_Error in that case. (Find_Prim_Op): Fix latent bug: raise Program_Error when there are no primitives. * exp_ch7.adb, sem_util.adb: Use Find_Optional_Prim_Op when the code is expecting Empty. * sem_ch8.adb: Use Find_Optional_Prim_Op to avoid handling Program_Error. From-SVN: r223541
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