You didn't post the outputted C code of SWIG. A WAG says to add "#define NO_XSLOCKS" before the first perl header is included. Perl redefines by preproc malloc and free to its own safesysmalloc and safesysfree.

In reply to Re: Perl with Swig C module not releasing memory by bulk88
in thread [Solved] Perl with Swig C module not releasing memory by megaframe

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