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Re: FreeExpr called on live expr

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  • Subject: [mg6351] Re: [mg6328] FreeExpr called on live expr
  • From: Gianluca Gorni <gorni at>
  • Date: Thu, 13 Mar 1997 01:20:01 -0500 (EST)
  • Sender: owner-wri-mathgroup at

>The message "FreeExpr called on live expr" should never come up.
>This message means that the Mathematica kernel is releasing memory
>that is still being used.  When you see this message, the Mathematica
>kernel will normally crash.
>We have not seen this problem on any computers other than SGI
>computers.  Even on SGI computers, this problem is very rare.
>It seems to come up only in large programs that use a lot of
>memory and that take a long time to run.
>Dave Withoff
>Wolfram Research

I must report that last year I ran into a "FreeExpr called on live expr"
error when using Mathematica 2.2 on a Sun machine. It was a very
large algebraic calculation. I did not keep a record of the code
that caused the error.

Bye to all mathgroupers!

           Gianluca Gorni


Gianluca Gorni
Universita` di Udine
Dipartimento di Matematica e Informatica
via delle Scienze 208
I-33100 Udine UD

Ph.:(39) (432) 558422    Fax:(39) (432) 558499
mailto:gorni at

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