kwaping,
You can see in the code that I am not using any prototypes. Additionally, it would be really wacky if when sort called it the first time it didn't see it as a prototyped sub (used $a and $b) but when it got recursed the first time it did (using references in @_). I know this is not the case because I printed the values of @_ and they are correct. It is the undefined $a and $b and the mysterious blowing up that has me baffled.

Cheers - L~R

In reply to Re^6: Sorting, recursion, and tail-call optimizations by Limbic~Region
in thread Sorting, recursion, and tail-call optimizations by Limbic~Region

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