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[Ada] Missing errors on illegal expressions for entry pre/postconditions

From: Arnaud Charlet <charlet at adacore dot com>
To: gcc-patches at gcc dot gnu dot org
Cc: Ed Schonberg <schonberg at adacore dot com>
Date: Thu, 16 Jun 2016 06:25:54 -0400
Subject: [Ada] Missing errors on illegal expressions for entry pre/postconditions
Authentication-results: sourceware.org; auth=none

This patch adds checks on the expressions of pre/postconditions for task and
protected entries, prior to their full analysis, so that errors are properly
emitted in various compiler modes.

Tested by ACATS 4.0L: B611008

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

2016-06-16  Ed Schonberg  <schonberg@adacore.com>

	* sem_ch3.adb (Check_Entry_Contracts): New procedure, subsidiary
	of Analyze_Declarations, that performs pre-analysis of
	pre/postconditions on entry declarations before full analysis
	is performed after entries have been converted into procedures.
	Done solely to capture semantic errors.
	* sem_attr.adb (Analyze_Attribute, case 'Result): Add guard to
	call to Denote_Same_Function.

Attachment: difs
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