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<TITLE>sane-devel: xscanimage problem/question?</TITLE>
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<META NAME="Author" CONTENT="Peter Fales (psfales@lucent.com)">
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<META NAME="Subject" CONTENT="xscanimage problem/question?">
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<H1>xscanimage problem/question?</H1>
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<!-- received="Wed Jun 6 20:51:11 2001" -->
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<!-- name="Peter Fales" -->
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<!-- subject="xscanimage problem/question?" -->
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<STRONG>From:</STRONG> Peter Fales (<A HREF="mailto:psfales@lucent.com?Subject=Re:%20xscanimage%20problem/question?&In-Reply-To=<20010606225516.A17284@lucent.com>"><EM>psfales@lucent.com</EM></A>)<BR>
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<STRONG>Date:</STRONG> Wed Jun 06 2001 - 20:55:16 PDT
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<LI><STRONG>Next message:</STRONG> <A HREF="0109.html">Christoph Knauer: "Select gray-channel for grey scanns"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0107.html">Douglas Gilbert: "Re: UMAX Vistascan S12"</A>
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My dc240 camera backend has an option that allows the picture in the camera
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<BR>
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to be erased after being read. A side effect of this is that doing a
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<BR>
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"scan" causes the "image number" option (SANE_Range type) to have the
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<BR>
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maximum value decreased by one.
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<BR>
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<P>I've found that doing a scan, then immediately clicking on the image number
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<BR>
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slider causes xscanimage to core dump. I assume my backend is doing something
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<BR>
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wrong, but I'm not sure what it might be or how to debug it. The messages
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<BR>
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that get printer are:
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<BR>
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<P><P>Gtk-WARNING **: invalid cast from `(unknown)' to `GtkObject'
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<BR>
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<P>Gtk-CRITICAL **: file gtkobject.c: line 1162
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<BR>
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(gtk_object_ref): assertion `GTK_IS_OBJECT (object)' failed.
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<BR>
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<P>Gtk-WARNING **: invalid cast from `(unknown)' to `GtkObject'
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<BR>
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Memory fault
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<BR>
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<P>and a gdb backtrace shows:
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<BR>
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<P>Program received signal SIGSEGV, Segmentation fault.
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<BR>
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0x404530c8 in main_arena () from /lib/i686/libc.so.6
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<BR>
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(gdb) bt
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<BR>
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#0 0x08265886 in main_arena ()
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<BR>
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#1 0x0808f0a3 in gtk_range_timer_1st_time ()
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<BR>
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#2 0x08101701 in g_timeout_dispatch ()
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<BR>
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#3 0x081009af in g_main_dispatch ()
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<BR>
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#4 0x08100ee2 in g_main_iterate ()
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<BR>
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#5 0x0810105c in g_main_run ()
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<BR>
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#6 0x08073447 in gtk_main ()
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<BR>
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#7 0x0804b1de in interface (argc=1, argv=0xbffff6dc) at xscanimage.c:1779
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<BR>
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#8 0x0804b2a4 in main (argc=1, argv=0xbffff6dc) at xscanimage.c:1814
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<BR>
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#9 0x08182b9a in __libc_start_main (main=0x804b1e8 <main>, argc=1,
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<BR>
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<P>Suggestions welcome.
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<BR>
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<P>Peter Fales
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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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To unsubscribe: echo unsubscribe sane-devel | mail <A HREF="mailto:majordomo@mostang.com?Subject=Re:%20xscanimage%20problem/question?&In-Reply-To=<20010606225516.A17284@lucent.com>">majordomo@mostang.com</A>
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</PRE>
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<LI><STRONG>Next message:</STRONG> <A HREF="0109.html">Christoph Knauer: "Select gray-channel for grey scanns"</A>
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<EM>
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This archive was generated by <A HREF="http://www.hypermail.org/">hypermail 2b29</A>
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: <EM>Wed Jun 06 2001 - 20:51:50 PDT</EM>
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