Gnuplot crashing for "hidden3d undefined" ?

[Philipp K. J. <ja...@ie...>]

I seem to have run across a problem with 
	set hidden3d undefined x
in Gnuplot 4.2.2 on Linux (detailed version
info at the end of this message).

The following two commands will crash 
gnuplot:
	set hidden3d undefined 2
	splot [][][:1] 10*exp(-(x**2 + y**2))
Gnuplot dies with the following message:
	hidden3d.c:776: store_polygon: Assertion `p->ymax <= surface_scale' failed.

Note that the plot command is such that
there are values of the function outside
the plot range (z-range).

I get the same effect for 
	set hidden3d undefined 2
and
	set hidden3d undefined 3
Only level = 1 is ok.

This occurs for both wxt and x11 terminals.
(I didn't try any others.)

Is this a known problem?

Best,

		Ph.






Below the output of show version long:

        G N U P L O T
        Version 4.2 patchlevel 2 
        last modified 31 Aug 2007
        System: Linux 2.6.18.2-34-default

        Copyright (C) 1986 - 1993, 1998, 2004, 2007
        Thomas Williams, Colin Kelley and many others

        Type `help` to access the on-line reference manual.
        The gnuplot FAQ is available from http://www.gnuplot.info/faq/

        Send bug reports and suggestions to 
<http://sourceforge.net/projects/gnuplot>

Compile options:
-READLINE  +LIBREADLINE  +HISTORY  +BACKWARDS_COMPATIBILITY  +BINARY_DATA  
+GD_PNG  +GD_JPEG  +GD_TTF  +GD_GIF  +ANIMATION  
-NOCWDRC  +X11  +X11_POLYGON  +MULTIBYTE  +USE_MOUSE  +HIDDEN3D_QUADTREE  
+DATASTRINGS  +HISTOGRAMS  +OBJECTS  +STRINGVARS  +MACROS  +IMAGE