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[Ada] Spurious error in if_expression with universal then_expression

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: Wed, 20 Apr 2016 05:05:12 -0400
Subject: [Ada] Spurious error in if_expression with universal then_expression
Authentication-results: sourceware.org; auth=none

If the first branch of an if-expression is a literal, remaining expressions
can resolve to any integer type (or any real type depending on the literal).

Tested in ACATS 4.0J test B457007

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

2016-04-20  Ed Schonberg  <schonberg@adacore.com>

	* sem_res.adb (Resolve_If_Expression): If first expression is
	universal, resolve subsequent ones with the corresponding class
	type (Any_Integer or Any_Real).

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