From owner-svn-src-all@freebsd.org  Thu Oct 24 04:12:38 2019
Return-Path: <owner-svn-src-all@freebsd.org>
Delivered-To: svn-src-all@mailman.nyi.freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1])
 by mailman.nyi.freebsd.org (Postfix) with ESMTP id D1B3A15C01E;
 Thu, 24 Oct 2019 04:12:38 +0000 (UTC)
 (envelope-from kevans@FreeBSD.org)
Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org
 [IPv6:2610:1c1:1:606c::19:3])
 (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)
 server-signature RSA-PSS (4096 bits)
 client-signature RSA-PSS (4096 bits) client-digest SHA256)
 (Client CN "mxrelay.nyi.freebsd.org",
 Issuer "Let's Encrypt Authority X3" (verified OK))
 by mx1.freebsd.org (Postfix) with ESMTPS id 46zDNk4R21z4SYm;
 Thu, 24 Oct 2019 04:12:38 +0000 (UTC)
 (envelope-from kevans@FreeBSD.org)
Received: from repo.freebsd.org (repo.freebsd.org
 [IPv6:2610:1c1:1:6068::e6a:0])
 (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
 (Client did not present a certificate)
 by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 7C71F8822;
 Thu, 24 Oct 2019 04:12:38 +0000 (UTC)
 (envelope-from kevans@FreeBSD.org)
Received: from repo.freebsd.org ([127.0.1.37])
 by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id x9O4CcCH049417;
 Thu, 24 Oct 2019 04:12:38 GMT (envelope-from kevans@FreeBSD.org)
Received: (from kevans@localhost)
 by repo.freebsd.org (8.15.2/8.15.2/Submit) id x9O4CcPx049416;
 Thu, 24 Oct 2019 04:12:38 GMT (envelope-from kevans@FreeBSD.org)
Message-Id: <201910240412.x9O4CcPx049416@repo.freebsd.org>
X-Authentication-Warning: repo.freebsd.org: kevans set sender to
 kevans@FreeBSD.org using -f
From: Kyle Evans <kevans@FreeBSD.org>
Date: Thu, 24 Oct 2019 04:12:38 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
 svn-src-stable@freebsd.org, svn-src-stable-12@freebsd.org
Subject: svn commit: r354012 - stable/12/stand/forth
X-SVN-Group: stable-12
X-SVN-Commit-Author: kevans
X-SVN-Commit-Paths: stable/12/stand/forth
X-SVN-Commit-Revision: 354012
X-SVN-Commit-Repository: base
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
X-BeenThere: svn-src-all@freebsd.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: "SVN commit messages for the entire src tree \(except for &quot;
 user&quot; and &quot; projects&quot; \)" <svn-src-all.freebsd.org>
List-Unsubscribe: <https://lists.freebsd.org/mailman/options/svn-src-all>,
 <mailto:svn-src-all-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/svn-src-all/>
List-Post: <mailto:svn-src-all@freebsd.org>
List-Help: <mailto:svn-src-all-request@freebsd.org?subject=help>
List-Subscribe: <https://lists.freebsd.org/mailman/listinfo/svn-src-all>,
 <mailto:svn-src-all-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 24 Oct 2019 04:12:38 -0000

Author: kevans
Date: Thu Oct 24 04:12:38 2019
New Revision: 354012
URL: https://svnweb.freebsd.org/changeset/base/354012

Log:
  MFC r352420: loader_4th: scan_buffer can leave empty string on stack
  
  When the file processing is done, we will have string with lenght 0 in stack
  and we will attempt to
  allocate 0 bytes.

Modified:
  stable/12/stand/forth/support.4th
Directory Properties:
  stable/12/   (props changed)

Modified: stable/12/stand/forth/support.4th
==============================================================================
--- stable/12/stand/forth/support.4th	Thu Oct 24 04:08:24 2019	(r354011)
+++ stable/12/stand/forth/support.4th	Thu Oct 24 04:12:38 2019	(r354012)
@@ -363,6 +363,7 @@ variable fd
 ;
 
 : line_buffer_resize  ( len -- len )
+  dup 0= if exit then
   >r
   line_buffer .len @ if
     line_buffer .addr @
@@ -376,6 +377,7 @@ variable fd
 ;
     
 : append_to_line_buffer  ( addr len -- )
+  dup 0= if 2drop exit then
   line_buffer strget
   2swap strcat
   line_buffer .len !