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[Ada] Output of errors related to Pre'Class, Pre_Class, Post'Class, Post_Class

From: Arnaud Charlet <charlet at adacore dot com>
To: gcc-patches at gcc dot gnu dot org
Cc: Hristian Kirtchev <kirtchev at adacore dot com>
Date: Mon, 2 Mar 2015 04:29:00 -0500
Subject: [Ada] Output of errors related to Pre'Class, Pre_Class, Post'Class, Post_Class
Authentication-results: sourceware.org; auth=none

This patch takes advantage of the recently introduced mechanism that outputs
special names _Pre and _Post to emit errors related to pre/postconditions. No
change in behavior, no test.

Tested on x86_64-pc-linux-gnu, committed on trunk

2015-03-02  Hristian Kirtchev  <kirtchev@adacore.com>

	* sem_prag.adb (Duplication_Error): Remove the special handling
	of 'Class or _Class in the context of pre/postconditions.
	(Process_Class_Wide_Condition): Remove the special handling of
	'Class or _Class in the context of pre/postconditions.
	* sem_util.adb (Original_Aspect_Pragma_Name): Names Pre_Class
	and Post_Class no longer need to be converted to _Pre and _Post.
	* sem_util.ads (Original_Aspect_Pragma_Name): Update the comment
	on usage.

Attachment: difs
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