ghci keeps the value of your last computation in a special variable
called "it".  Therefore, the value of your last run can't be garbage
collected until the current run is finished.  Try "print run" or type
in a dummy expression in between runs.


Cheers,
Spencer Janssen

On 7/27/06, Jeff Polakow <[EMAIL PROTECTED]> wrote:

Hello,

  Why would ghci run out of heap space (and crash) the second time I run a
computation?

More specifically, I have a ghci session which goes something like this:

    *Analysis>run
    [ ... print out of a very long list ...]

    *Analysis>run
    [ ... partial print out
    GHC's heap exhausted: current limit is 268435456 bytes;
    Use the `-M<size>' option to increase the total heap size.

Shouldn't the garbage collector free up everything in between my top-level
function executions?

Also, there doesn't appear to be a  '-M<size>' flag for ghc (I'm using 6.4.2
on windows xp).

thanks,
  Jeff

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