sem_ch8.adb (Analyze_Subprogram_Renaming): When renaming an attribute as a actual...

sem_ch8.adb (Analyze_Subprogram_Renaming): When renaming an attribute as a actual in an instance...

2008-07-30  Ed Schonberg  <schonberg@adacore.com>

	* sem_ch8.adb (Analyze_Subprogram_Renaming): When renaming an attribute
	as a actual in an instance, check for a missing attribute to prevent
	program_error on an illegal program.

	* exp_util.adb (Find_Prim_Op): Rather than Assert (False), raise program
	error if primitive is not found, so that exception can be handled
	elsewhere on illegal programs.

From-SVN: r138322