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<TITLE>sane-devel: Re: bug in sanei_debug.h</TITLE>
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<META NAME="Author" CONTENT="Jochen Eisinger (jochen.eisinger@gno.de)">
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<META NAME="Subject" CONTENT="Re: bug in sanei_debug.h">
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<H1>Re: bug in sanei_debug.h</H1>
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<!-- received="Sun Oct 15 16:28:02 2000" -->
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<!-- sent="Mon, 16 Oct 2000 01:35:33 +0200" -->
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<!-- name="Jochen Eisinger" -->
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<!-- subject="Re: bug in sanei_debug.h" -->
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<STRONG>From:</STRONG> Jochen Eisinger (<A HREF="mailto:jochen.eisinger@gno.de?Subject=Re:%20bug%20in%20sanei_debug.h&In-Reply-To=<39EA3F45.5A50C7CB@gno.de>"><EM>jochen.eisinger@gno.de</EM></A>)<BR>
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<STRONG>Date:</STRONG> Sun Oct 15 2000 - 16:35:33 PDT
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<LI><STRONG>Previous message:</STRONG> <A HREF="0161.html">David Mosberger-Tang: "Re: bug in sanei_debug.h"</A>
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0164.html">Jochen Eisinger: "Re: bug in sanei_debug.h (the patch)"</A>
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<P>
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Hi!
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<BR>
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<P>[Henning Meier-Geinitz]
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<BR>
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<EM>> > However, it doesn't seem to be an easy fix. The variable for the current
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</EM><BR>
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<EM>> > debug level and the backend name is stored in the object code of the
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</EM><BR>
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<EM>> > backend. It has to be transmitted to sanei_init_debug in some way. With
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</EM><BR>
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<EM>> > vararg macros that's no problem because these two values can be transmitted
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</EM><BR>
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<EM>> > as function parameters to sanei_debug_max. Without varargs we can't touch
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</EM><BR>
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<EM>> > the parameters of DBG / sanei_debug so I don't have an idea how to tell
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</EM><BR>
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<EM>> > sanei_debug_msg the debug level and backend name without moving all these
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</EM><BR>
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<EM>> > functions to sanei_debug.h. Any ideas (maybe I didn't understand the code
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</EM><BR>
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<EM>> > fully ...).
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</EM><BR>
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<P>I've patch sanei_debug.h... now it creates one additional function for
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<BR>
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each backend that #includes sanei_debug.h (if there is no support for
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<BR>
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vararg macros). The output is the same as if it was compiled with vararg
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<BR>
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macros.
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<BR>
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<P>I've also modified the test for vararg macros: I added the test #if
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<BR>
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defined __GNUC__ && (...)
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<BR>
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<P>What do you think about it? There are severall drawbacks:
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<BR>
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<P>* debug_msg is no more static (maybe it should be renamed
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<BR>
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sanei_debug_msg to avoid conflicts)
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<BR>
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* the new per backend function needs to #include stdlib, string & stdarg
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<BR>
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* it allocates memory
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<BR>
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<P>-- jochen
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<BR>
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<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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This archive was generated by <A HREF="http://www.hypermail.org/">hypermail 2b29</A>
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: <EM>Sun Oct 15 2000 - 16:28:36 PDT</EM>
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