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Re: Careless use of Scaled leads to hard crash in V7

  • To: mathgroup at smc.vnet.net
  • Subject: [mg97247] Re: Careless use of Scaled leads to hard crash in V7
  • From: Albert Retey <awnl at gmx-topmail.de>
  • Date: Mon, 9 Mar 2009 01:04:49 -0500 (EST)
  • References: <gp0829$l3o$1@smc.vnet.net>

JUN wrote:
> Hi,
> I just saw a crash in Mathematica V 7 on Mac OS X Tiger and Leopard. The
> program (reproducibly) "quits unexpectedly" after doing the following:
> 
> 1)
> Evaluate
> Graphics3D[{Arrowheads[Scaled[.05]], Arrow[Tube[{{0, 0, 0}, {1, 0,
> 0}}, Scaled[.05]]]}]
> 
> 2)
> Use arrow keys to go back to previous input cell and try to delete the
> occurrence of Scaled[.05] in Arrowheads, replacing it with .1 or some
> other value. You may not even get this far, the crash sometimes
> happens earlier.
> 
> 3)
> Repeat steps 1 and 2 if necessary.
> 
> There briefly is an "Internal Self Test Error" message before the
> crash wipes Mathematica off the screen.
> 
> This is not exactly the most pleasant way of learning that Scaled
> lengths can't be used inside Arrowhead.
> I wonder if this crash also happens on other platforms.

Version 7.0.0 on Windows XP also seems to be crashing, not giving the
error message you see but silently accumulating more and more memory...

albert


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