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<TITLE>sane-devel: Re: assert.h problems with shared libraries</TITLE>
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<META NAME="Author" CONTENT="Nick Lamb (njl98r@ecs.soton.ac.uk)">
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<META NAME="Subject" CONTENT="Re: assert.h problems with shared libraries">
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<H1>Re: assert.h problems with shared libraries</H1>
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<!-- received="Thu May 31 14:57:20 2001" -->
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<STRONG>From:</STRONG> Nick Lamb (<A HREF="mailto:njl98r@ecs.soton.ac.uk?Subject=Re:%20assert.h%20problems%20with%20shared%20libraries&In-Reply-To=<20010531225708.A14994@ecs.soton.ac.uk>"><EM>njl98r@ecs.soton.ac.uk</EM></A>)<BR>
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<STRONG>Date:</STRONG> Thu May 31 2001 - 14:57:08 PDT
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<LI><STRONG>Previous message:</STRONG> <A HREF="0455.html">Oliver Rauch: "Re: assert.h problems with shared libraries"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0455.html">Oliver Rauch: "Re: assert.h problems with shared libraries"</A>
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On Thu, May 31, 2001 at 11:39:01PM +0200, Oliver Rauch wrote:
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<BR>
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<EM>> An assert is an emergency stop. I think that most asserts can
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</EM><BR>
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<EM>> be removed without any problems (if not we would have several
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<EM>> known problems).
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>> I think we should do this:
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</EM><BR>
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<EM>> 1) remove assert() where it is not necessary
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</EM><BR>
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<EM>> 2) replace an assert(a<b) by
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</EM><BR>
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<EM>> if (a<b) {DBG(0, "error..."); + exit or return with error code}
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</EM><BR>
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<P>So the solution is not to check for error conditions in SANE?
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Poor solution. Let's try to understand what's wrong on AIX and fix it.
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<BR>
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<P>Of COURSE removing assertions doesn't break code, that's not what
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assertions are for, they represent an element of programming by
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contract which is vitally important to the SANE design and not worth
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throwing away because of some config problems on AIX.
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<BR>
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<P>Nick.
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<BR>
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<P><P><PRE>
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--
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Source code, list archive, and docs: <A HREF="http://www.mostang.com/sane/">http://www.mostang.com/sane/</A>
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</PRE>
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