Question about memory management

[Jerry Beckmann]

I am having some problems with memory management with using a C library. The
library has basically 1 function that I use. The function is foo( char*
input, char** output). The problem is that output seems to not be freed by
the perl xs module, and I get scripts that grow to 50+MBs very quickly.

Any ideas on how I can free the memory that this library is allocating?

A sample perl function that I have using it looks like:

sub Function()
        my( $inputString, $outputString );l

        $inputString = "some semi-long string of about 1k";
        foo( $inputString, $outputString );

        processString( $outputString );

        return 1;


TIA,
Jerry