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[Ada] Reject properly an aspect Predicate on a formal type

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: Tue, 5 Dec 2017 07:46:47 -0500
Subject: [Ada] Reject properly an aspect Predicate on a formal type
Authentication-results: sourceware.org; auth=none

This patch adds a check to reject an aspect Predicate on a formal type
declaration.

Compiling gen.adb must yield:

   gen.ads:2:55: predicate cannot apply to formal type

---
generic
   type T is array (Integer range <>) of Integer
       with Predicate => T'First /= 1;
function Gen return Integer;
---
function Gen return Integer is
   X : T(1 .. 2);
begin
   return X'First;
end Gen;

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

2017-12-05  Ed Schonberg  <schonberg@adacore.com>

	* sem_ch13.adb (Analyze_Aspect_Specifications, case Predicate): A
	predicate cannot apply to a formal type.

Attachment: difs
Description: Text document

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