From patchwork Wed Dec 16 13:15:35 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pierre-Marie de Rodat X-Patchwork-Id: 1417128 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=gcc.gnu.org (client-ip=2620:52:3:1:0:246e:9693:128c; helo=sourceware.org; envelope-from=gcc-patches-bounces@gcc.gnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=adacore.com Received: from sourceware.org (server2.sourceware.org [IPv6:2620:52:3:1:0:246e:9693:128c]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 4Cwwcq2sVbz9sT5 for ; Thu, 17 Dec 2020 00:16:27 +1100 (AEDT) Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id CA35E3840C39; Wed, 16 Dec 2020 13:15:44 +0000 (GMT) X-Original-To: gcc-patches@gcc.gnu.org Delivered-To: gcc-patches@gcc.gnu.org Received: from rock.gnat.com (rock.gnat.com [IPv6:2620:20:4000:0:a9e:1ff:fe9b:1d1]) by sourceware.org (Postfix) with ESMTP id A28E63851C21 for ; Wed, 16 Dec 2020 13:15:38 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org A28E63851C21 Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=adacore.com Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=derodat@adacore.com Received: from localhost (localhost.localdomain [127.0.0.1]) by filtered-rock.gnat.com (Postfix) with ESMTP id 4820A56203; Wed, 16 Dec 2020 08:15:37 -0500 (EST) X-Virus-Scanned: Debian amavisd-new at gnat.com Received: from rock.gnat.com ([127.0.0.1]) by localhost (rock.gnat.com [127.0.0.1]) (amavisd-new, port 10024) with LMTP id 4rWnQctd5CfA; Wed, 16 Dec 2020 08:15:37 -0500 (EST) Received: from tron.gnat.com (tron.gnat.com [205.232.38.10]) by rock.gnat.com (Postfix) with ESMTP id 4FAF156206; Wed, 16 Dec 2020 08:15:35 -0500 (EST) Received: by tron.gnat.com (Postfix, from userid 4862) id 4EE36A6; Wed, 16 Dec 2020 08:15:35 -0500 (EST) Date: Wed, 16 Dec 2020 08:15:35 -0500 From: Pierre-Marie de Rodat To: gcc-patches@gcc.gnu.org Subject: [Ada] Refine types of variables for parsing formal object declarations Message-ID: <20201216131535.GA69993@adacore.com> MIME-Version: 1.0 Content-Disposition: inline User-Agent: Mutt/1.5.23 (2014-03-12) X-Spam-Status: No, score=-11.4 required=5.0 tests=BAYES_00, GIT_PATCH_0, KAM_DMARC_STATUS, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-BeenThere: gcc-patches@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Piotr Trojanek Errors-To: gcc-patches-bounces@gcc.gnu.org Sender: "Gcc-patches" Local variables in parsing of formal object declarations take only positive values, so their types can be narrowed to Pos. Cleanup only; semantics is unaffected. Tested on x86_64-pc-linux-gnu, committed on trunk gcc/ada/ * par-ch12.adb (P_Formal_Object_Declarations): Refine types to Pos. diff --git a/gcc/ada/par-ch12.adb b/gcc/ada/par-ch12.adb --- a/gcc/ada/par-ch12.adb +++ b/gcc/ada/par-ch12.adb @@ -423,12 +423,12 @@ package body Ch12 is procedure P_Formal_Object_Declarations (Decls : List_Id) is Decl_Node : Node_Id; - Ident : Nat; + Ident : Pos; Not_Null_Present : Boolean := False; - Num_Idents : Nat; + Num_Idents : Pos; Scan_State : Saved_Scan_State; - Idents : array (Int range 1 .. 4096) of Entity_Id; + Idents : array (Pos range 1 .. 4096) of Entity_Id; -- This array holds the list of defining identifiers. The upper bound -- of 4096 is intended to be essentially infinite, and we do not even -- bother to check for it being exceeded.