[fpc-devel] Patch: Exception handling without SysUtils

Tomas Hajny XHajT03 at mbox.vol.cz
Thu Jul 7 22:09:15 CEST 2005

Date sent:      	Thu, 07 Jul 2005 20:53:48 +0200
From:           	Florian Klaempfl <F.Klaempfl at gmx.de>
To:             	FPC developers' list <fpc-devel at lists.freepascal.org>
Subject:        	Re: [fpc-devel] Patch: Exception handling without SysUtils
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> Yury Sidorov wrote:
> > From: "Florian Klaempfl" <florian at freepascal.org>
> > 
> >>> I found that try...except and try...finally do not work if
> >>> SysUtils unit is not used (exception handling code is not called).
> >>> The following patch fixes this issue.
> >>
> >>
> >> Not using sysutils means that you don't want exceptions. If you
> >> want to have run time errors converted into exceptions use
> >> sysutils. The patch has another probably undesired side effect:
> >> imaging someone installed an own errorproc to release resources
> >> (memory etc.) if he did so, he won't get that exception.
> > 
> > 
> > I think try/finally/except should work without SysUtils. It works in
> > Delphi. For example KOL library does not use SysUtils, but
> > programmer can use try/finally/except to write crash-proof code.

Isn't SysUtils used automatically in Delphi mode? That should be 
probably enough for Delphi compatibility, shouldn't it?


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