Hi folks,

I've recently had to dive back into C to link some old C code with Perl.

My basic problem is this:
I have C code that mallocs memory (for a string, specifically)
In my XS I have this declaration to mimic the one in C
char *
proc_desc(a,b)
       char * a
       char b
     OUTPUT:
        RETVAL

[download]

I get the string back in Perl, but the memory for the string is never released when the receiving variable goes out of scope.

I'm trying to understand the XS world for my glue logic, but haven't had a lot of success. I've been looking into using sv_2mortal, but every string example I find allocates the string in the XS code.

So, my question is, how do I tell perl that it must deallocate the memory C handed back to it? I feel like this is such a simple, obvious thing to do.

In reply to Perl, C and deallocation responsibility by SheWolf

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