[Swig-user] Swig example get_time() mem cleanup

[Lancet <Lan...@gm...>]

The great swig tutorial at  http://www.swig.org/tutorial.html 
shows the use of a function called get_time() which returns a pointer to
char. My question is, where is this string deallocated after it was used?

In the file exampl_wrap.c I found this:

static VALUE
_wrap_get_time(int argc, VALUE *argv, VALUE self) {
    char *result;
    VALUE vresult = Qnil;
    
    if ((argc < 0) || (argc > 0))
    rb_raise(rb_eArgError, "wrong # of arguments(%d for 0)",argc);
    result = (char *)get_time();
    
    vresult = rb_str_new2(result);
    return vresult;
}


To me it seems that more and more memory would be allocated by calling this
function over and over again. get_time() should produce strings which are
never deallocated again.

Does rb_str_new2 do that job?
Here is what it does (hope I got the right file):
VALUE
rb_str_new2(ptr)
const char *ptr;
{
     if (!ptr) {
         rb_raise(rb_eArgError, "NULL pointer given");
     }
     return rb_str_new(ptr, strlen(ptr));
 }


Well, I'm sure that the memory is freed again somewhere. Could someone
please enlighten me?
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