[Kst] kdeextragear-2/kst/kst

[Andrew Walker]

Could you provide more details on the "endless ways to 
crash Kst" as we should certainly fix these.

-----Original Message-----
From: George Staikos [mailto:staikos at kde.org]
Sent: Wednesday, March 16, 2005 8:43 AM
To: kst at kde.org
Subject: Re: [Kst] kdeextragear-2/kst/kst


On Wednesday 16 March 2005 11:28, Andrew Walker wrote:
> Not sure if the previous email I sent made it hrough, so here it is again.
> How to repduce this problem:
>
> If you have the main.cpp version before my latest change then
> do something like:
>
> kst gyrodata.dat -y 1 -m 99999999999
>
> If you have my latest changes to main.cpp then do the following:
>
> ksy gyrodata.dat -y 1 -m 10

   Neither of those crash or assert for me.

> then simply start shrinking the window down in the horizontal
> direction, until you get a crash or assert.
>
> As the code was previously the result would crash in both
> deubg and release. As it was (with George's assert) it would assert
> in debug and crash in release. The problem was not caught
> and we have now released a version with this bug - when some
> simple defensive programming would have prevented it.

   These are also uncommon use cases, and well, I can find endless ways to 
crash Kst and endless ways to add if() everywhere, and then endless more ways 
to crash it.  We could easily double the amount of code in Kst adding 
protection for that 0.01% of the usage cases.  The code will be a nightmare 
to work with and our productivity will fall.  Furthermore, the design of the 
code will be wrong to begin with, so we'll be adding if() until the cows come 
home.  Let's fix the real bugs instead of making a mess of things.

-- 
George Staikos
KDE Developer				http://www.kde.org/
Staikos Computing Services Inc.		http://www.staikos.net/
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