From mboxrd@z Thu Jan  1 00:00:00 1970
X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me
X-Spam-Level: *
X-Spam-Status: No, score=1.3 required=5.0 tests=BAYES_00,INVALID_MSGID,
	MSGID_RANDY autolearn=no autolearn_force=no version=3.4.4
X-Google-Language: ENGLISH,ASCII-7-bit
X-Google-Thread: 103376,b2011d0de07e01d2
X-Google-Attributes: gid103376,public
From: Ted Dennison <dennison@telepath.com>
Subject: Re: wanted: Ada diff tool
Date: 2000/05/05
Message-ID: <8euk28$s5d$1@nnrp1.deja.com>#1/1
X-Deja-AN: 619577454
References: <L_DP4.1$GS.1551@wdc-read-01.qwest.net> <8eot2o$kbm$1@wanadoo.fr>
 <030520002201489719%nospam@nospam.com>
 <3910F63E.A461B879@research.canon.com.au>
 <Pine.LNX.4.10.10005050902360.20175-100000@freenet1.afn.org>
X-Http-Proxy: 1.0 x37.deja.com:80 (Squid/1.1.22) for client 204.48.27.130
Organization: Deja.com - Before you buy.
X-Article-Creation-Date: Fri May 05 13:58:41 2000 GMT
X-MyDeja-Info: XMYDJUIDtedennison
Newsgroups: comp.lang.ada
X-Http-User-Agent: Mozilla/4.7 [en] (WinNT; I)
Date: 2000-05-05T00:00:00+00:00
List-Id: <comp.lang.ada>

In article <Pine.LNX.4.10.10005050902360.20175-100000@freenet1.afn.org>,
  "Benjamin J. Robinson" <afn46299@afn.org> wrote:
> On Thu, 4 May 2000, Geoff Bull wrote:
>
> > If you just need to know if the files are functionally different,
> > not where they are different, you could just compile the two files
> > and compare the resulting binaries.
>
> Some compilers have the habit of slipping time-of-compile information
> into the image.  This has the effect of making two binaries different,
> even if they were compiled from the same source.  Before trying this
> suggestion

The old DEC Ada compiler would even optimize differently, depending on
how much RAM it happened to have available to it when you compiled.

(I got royally roasted here about 7 years ago when I brought this up.)

--
T.E.D.

http://www.telepath.com/~dennison/Ted/TED.html


Sent via Deja.com http://www.deja.com/
Before you buy.