From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: tuhs-bounces@minnie.tuhs.org X-Spam-Checker-Version: SpamAssassin 3.4.1 (2015-04-28) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-0.6 required=5.0 tests=DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,RCVD_IN_DNSWL_NONE, T_DKIM_INVALID autolearn=ham autolearn_force=no version=3.4.1 Received: from minnie.tuhs.org (minnie.tuhs.org [45.79.103.53]) by inbox.vuxu.org (OpenSMTPD) with ESMTP id 7ded6af5 for ; Wed, 27 Jun 2018 02:47:10 +0000 (UTC) Received: by minnie.tuhs.org (Postfix, from userid 112) id B4A31A18C4; Wed, 27 Jun 2018 12:47:09 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id 2132DA183A; Wed, 27 Jun 2018 12:46:53 +1000 (AEST) Authentication-Results: minnie.tuhs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=thunk.org header.i=@thunk.org header.b=dPJfYe/O; dkim-atps=neutral Received: by minnie.tuhs.org (Postfix, from userid 112) id BDFA79EDF1; Wed, 27 Jun 2018 12:44:55 +1000 (AEST) Received: from imap.thunk.org (imap.thunk.org [74.207.234.97]) by minnie.tuhs.org (Postfix) with ESMTPS id 6E6A7A181A for ; Wed, 27 Jun 2018 12:44:55 +1000 (AEST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=thunk.org; s=ef5046eb; h=In-Reply-To:Content-Type:MIME-Version:References:Message-ID: Subject:Cc:To:From:Date:Sender:Reply-To:Content-Transfer-Encoding:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=jWESktu28kgImvFrrKWfw/rIRmJtdGZsJ739CHKBXMw=; b=dPJfYe/OGIWZTLlcEekshrSd2J SJxwi1qS5rVTYQHn3qbIZxq814s6J9SjMKc1/3dvBgkj2C5tqGqIB5Nfd3SP2RkbPWmzvENN1+Q7T 9bYLkcitiFe+Td6/Iq/Ph1h10ZLSiCOMadSTLmCJ7RPMYS+3PZOfJFP8Ly4KFKAtBliA=; Received: from root (helo=callcc.thunk.org) by imap.thunk.org with local-esmtp (Exim 4.89) (envelope-from ) id 1fY05x-0005s4-4h; Wed, 27 Jun 2018 02:22:09 +0000 Received: by callcc.thunk.org (Postfix, from userid 15806) id 18D5D7A4480; Tue, 26 Jun 2018 22:22:08 -0400 (EDT) Date: Tue, 26 Jun 2018 22:22:08 -0400 From: "Theodore Y. Ts'o" To: Larry McVoy Message-ID: <20180627022208.GB31920@thunk.org> References: <1f8043fd-e8d6-a5e6-5849-022d1a41f5bf@kilonet.net> <20180626215012.GE8150@mcvoy.com> <20180626215905.GH8150@mcvoy.com> <20180627021843.GA31920@thunk.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180627021843.GA31920@thunk.org> User-Agent: Mutt/1.10.0 (2018-05-17) X-SA-Exim-Connect-IP: X-SA-Exim-Mail-From: tytso@thunk.org X-SA-Exim-Scanned: No (on imap.thunk.org); SAEximRunCond expanded to false Subject: Re: [TUHS] PDP-11 legacy, C, and modern architectTures X-BeenThere: tuhs@minnie.tuhs.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: The Unix Heritage Society mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: tuhs@minnie.tuhs.org Errors-To: tuhs-bounces@minnie.tuhs.org Sender: "TUHS" On Tue, Jun 26, 2018 at 10:18:43PM -0400, Theodore Y. Ts'o wrote: > There is a reason why the Linux kernel > compiles with the GCC flags: > > -fno-asynchronous-unwind-tables -fno-delete-null-pointer-checks \ > -fstack-protector-strong -fno-var-tracking-assignments \ > -femit-struct-debug-baseonly -fno-var-tracking \ > -fno-inline-functions-called-once -fno-strict-overflow \ > -fno-merge-all-constants -fmerge-constants -fno-stack-check Oops, I forgot a biggy: -fno-strict-aliasing - Ted