From: drew@verdix.com (Drew Johnson)
Subject: Re: Yearly Fees for Support of Compiler
Date: 9 May 91 16:05:11 GMT [thread overview]
Message-ID: <1991May9.160511.22883@verdix.com> (raw)
In-Reply-To: 2222@ac17.cs.nps.navy.mil
In article <2222@ac17.cs.nps.navy.mil> nash@ac17.cs.nps.navy.mil (david nash) writes:
>I disagree with Mr. Taft's point of view. In my mind, reputable companies
>that market software make an implicit promise of correctness to would-be
I believe that most Ada vendors would agree that what we promise is "reasonable
correctness". With Ada, what you are paying for is a product that is
guaranteed to pass a rather extensive validation suite.
>buyers. The gentleman to whom Mr. Taft responded was suggesting that they
>provide bug fixes without payment, not enhanced features.
While it would be nice to be able to provide bug fixes without payment,
the simple fact is that bug fixes *cost money*. First off, at least 50%
of the time a customer claims to have a bug, it is actually due to customer
error. The cost of determining this is not insignificant, because it requires
an experienced software engineer. Now, even if a real bug has been reported,
the cost of fixing it can be very high. Because Ada compilers are very complex,
especially in the area of generics, a bug could take days or weeks of an
engineer's time. Then, after it is fixed, we (Verdix) are not usually
comfortable releasing a fix unless ACVC has been re-run internally to ensure
that no regressions were introduced. Even when heavily automated, running
ACVC takes time and costs money.
Given that fixing bugs costs money, we have 2 choices for allowing for that
cost: build it into the purchase price, or charge support. Ada vendors
do what any other software company does: charge support.
If you want bug fixes for free, then wait for GNU to come out with an Ada
compiler. You will probably have a very long wait, however, unless guys
like Mr Taft decide to dump corporate life in order to take the opportunity
to work for free :).
As an aside, try getting an OS patch from Sun if you do not have software
support.
Drew Johnson
Verdix Corp.
drew@verdix.com
next prev parent reply other threads:[~1991-05-09 16:05 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
1991-05-08 18:24 Yearly Fees for Support of Compiler david nash
1991-05-08 19:57 ` Charles H. Sampson
1991-05-09 6:02 ` rharwood
1991-05-09 14:25 ` Jerry Callen
1991-05-09 16:05 ` Drew Johnson [this message]
1991-05-14 22:59 ` Robert I. Eachus
-- strict thread matches above, loose matches on Subject: below --
1991-05-17 17:50 mcsun!cernvax!chx400!sicsun!disuns2!elcgl.epfl.ch!madmats
[not found] <172546@<1991May3>
1991-05-07 14:26 ` stt
1991-05-08 18:44 ` Kevin Simonson
1991-05-09 7:28 ` Jim Showalter
1991-05-09 20:07 ` Charles H. Sampson
1991-05-10 5:59 ` Jim Showalter
1991-05-12 22:00 ` Erik Naggum
1991-05-16 14:52 ` David T. Lindsley
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