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Careless use of Scaled leads to hard crash in V7

  • To: mathgroup at smc.vnet.net
  • Subject: [mg97219] Careless use of Scaled leads to hard crash in V7
  • From: JUN <noeckel at gmail.com>
  • Date: Sun, 8 Mar 2009 05:52:52 -0500 (EST)

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.

Jens



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