[MacPerl] panic question

[Dilworth_Parkinson@byu.edu (Dilworth B. Parkinson)]

Could someone enlighten me as to the meaning of the following error message?

# panic: realloc.
File 'Perl II:Find5Folder:find5words(sortWordBefore).perl'; Line 30 # <>
line 102509


I get it when running a little concordance program with looks for a regular
expression in a large text file, and if it finds it, it prints it out to a
result file surrounded by 5 words of context before and after.  The program
works in the sense that the result file has many examples of the word I'm
looking for with the required context, but it stops before the end with
this error message.
Thanks
Dil Parkinson

ps. I need the explanation in fairly non-technical terms, if possible.