From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, HTML_MESSAGE,MAILING_LIST_MULTI,RCVD_IN_DNSWL_NONE autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 4456 invoked from network); 7 Aug 2020 17:12:36 -0000 Received: from minnie.tuhs.org (45.79.103.53) by inbox.vuxu.org with ESMTPUTF8; 7 Aug 2020 17:12:36 -0000 Received: by minnie.tuhs.org (Postfix, from userid 112) id AF32A9CAA6; Sat, 8 Aug 2020 03:12:35 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id 88A2F9C1CE; Sat, 8 Aug 2020 03:12:01 +1000 (AEST) Authentication-Results: minnie.tuhs.org; dkim=pass (2048-bit key; unprotected) header.d=ccil-org.20150623.gappssmtp.com header.i=@ccil-org.20150623.gappssmtp.com header.b="KFJGCwi8"; dkim-atps=neutral Received: by minnie.tuhs.org (Postfix, from userid 112) id 93CC29C1CE; Sat, 8 Aug 2020 03:11:59 +1000 (AEST) Received: from mail-qt1-f180.google.com (mail-qt1-f180.google.com [209.85.160.180]) by minnie.tuhs.org (Postfix) with ESMTPS id 77E4E9C1C7 for ; Sat, 8 Aug 2020 03:11:58 +1000 (AEST) Received: by mail-qt1-f180.google.com with SMTP id b25so1813738qto.2 for ; Fri, 07 Aug 2020 10:11:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ccil-org.20150623.gappssmtp.com; s=20150623; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=VVk4PaKlnV1ZDEq/BeMbUKCPH/+XvWx8r891Ixjjc+M=; b=KFJGCwi8v/ae26cgJeSgsqnZOoY+82eVjhV1nATfcmnwznLahQPWalqyzk+QkTLPj0 F72pVEb0oll5ehsoDhBIcAugdMiMLB/NsmaPN8OibHazi53S8GdfaG+J0kcjc2aBg+EP Bhz8ltrngRDN2oA3mSazy9hmZPIMZCz0f39kkU+RGKq37ZzG5Rk9fddqlP6hqptp96aA /MmsU6dVNxoTBVl1lTaJ1IPYDrNmZyogPmdps04wWgzQY8Z38pHJbv4S7CHfvpJtwH7w IVRKQT6KTlmPSvPC43/KE0XpB3zFQpwund/rWTnUmC8r6w8NJACj5hzQvTrO+4Mmuw6l hWxQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=VVk4PaKlnV1ZDEq/BeMbUKCPH/+XvWx8r891Ixjjc+M=; b=pFvCnTsp/ZlJ62xR5rqcK0N3S1XjIGIPvs96miCLv5p9gbotipFzZ0vFrTmXNbu+1+ FBi3L931EwqeTV5G2G4p1tnd+GG0tELGKhqk102GVIf12v/JjIQhcojMvu0GB3OOfEXW voN73kT2Doj04xFIhsKHq6Nb7lHv6N6GCKj7FOghNUioLlFTzuq9zA1wswnA3flIiRoL D5EQ8DoNHHPP1WOBsO5Wmb1jgFcPa7ICruW6frdUo00AMvUZQHS1anCgz5fwsU54+NfB ehmYCRK0/EVFMtyxNhXfikW2hzy9gWoDO9YABGbkRFJuvhL45e1icKeTSjeQaGgoRg9o O44w== X-Gm-Message-State: AOAM532RLMBAkrne1HSXxvDisATImZBs7UWwKW5b2xAKEx6lzwmjjnpG 3ybs3h/M6LddLtRsnAgrRQmJqXxKw+2TrBsubNTIMZmRWkF+Ww== X-Google-Smtp-Source: ABdhPJz7mg3PkRvWGBVIaRFlD5Jqp1m4dLbJaoMDlsyMfnegFV5D7q101RcbQxARHA+lNh0fsz/Jzi3pYUtiXZ9LnK4= X-Received: by 2002:aed:2f87:: with SMTP id m7mr14957997qtd.56.1596820317554; Fri, 07 Aug 2020 10:11:57 -0700 (PDT) MIME-Version: 1.0 References: <20200807160723.5E16918C08B@mercury.lcs.mit.edu> In-Reply-To: <20200807160723.5E16918C08B@mercury.lcs.mit.edu> From: John Cowan Date: Fri, 7 Aug 2020 13:11:46 -0400 Message-ID: To: Noel Chiappa Content-Type: multipart/alternative; boundary="000000000000cc609605ac4cb3d4" Subject: Re: [TUHS] Debugging help sought X-BeenThere: tuhs@minnie.tuhs.org X-Mailman-Version: 2.1.26 Precedence: list List-Id: The Unix Heritage Society mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: The Eunuchs Hysterical Society Errors-To: tuhs-bounces@minnie.tuhs.org Sender: "TUHS" --000000000000cc609605ac4cb3d4 Content-Type: text/plain; charset="UTF-8" On Fri, Aug 7, 2020 at 12:07 PM Noel Chiappa wrote: IIRC, you could use longer names than that (in C), but external references > only used the first 7 (in C - C symbols had a leading '_' tacked on; I > used to > know why), 8 (in assembler). > Precisely to avoid collisions between external names in C and names in assembler (whose namespace was flat except for local labels) when they were linked into your program. For similar reasons, F77 names had a trailing '_' tacked on. John Cowan http://vrici.lojban.org/~cowan cowan@ccil.org There is / One art / No more / No less To do / All things / With art- / -Lessness --Piet Hein --000000000000cc609605ac4cb3d4 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable


=
On Fri, Aug 7, 2020 at 12:07 PM Noel = Chiappa <jnc@mercury.lcs.mit.= edu> wrote:

IIRC, you could use long= er names than that (in C), but external references
only used the first 7 (in C - C symbols had a leading '_' tacked on= ; I used to
know why), 8 (in assembler).

Precisely = to avoid collisions between external names in C and names in assembler (who= se namespace was flat except for local labels) when they were linked into y= our program.

For similar reasons, F77 names had a = trailing '_' tacked on.


John Cowan =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0http://vrici.lojban.org/~cowan =C2=A0 =C2=A0 = =C2=A0 =C2=A0cowan@ccil.org
There = is / One art / No more / No less
To do / All things / With art- / -Lessn= ess =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0--Piet Hein

<= /div>
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