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[Ada] Crash on validity check on actual with type conversion

From: Pierre-Marie de Rodat <derodat at adacore dot com>
To: gcc-patches at gcc dot gnu dot org
Cc: Ed Schonberg <schonberg at adacore dot com>
Date: Mon, 9 Oct 2017 11:18:21 -0400
Subject: [Ada] Crash on validity check on actual with type conversion
Authentication-results: sourceware.org; auth=none

This patch fixes a compiler crash on a function call when validity checks
on actuals are enabled (-gnatVi) and the target type is a scalar type.

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

gcc/ada/

2017-10-09  Ed Schonberg  <schonberg@adacore.com>

	* exp_attr.adb (Expand_Attribute_Reference, case 'Valid): The prefix of
	the attribute is an object, but it may appear within a conversion. The
	object itself must be retrieved when generating the range test that
	implements the validity check on a scalar type.

gcc/testsuite/

2017-10-09  Ed Schonberg  <schonberg@adacore.com>

	* gnat.dg/validity_check2.adb, gnat.dg/validity_check2_pkg.ads:
	New testcase.

Attachment: difs
Description: Text document

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