You probably want `register-finalizer': http://docs.racket-lang.org/foreign/foreign_pointer-funcs.html#%28def._%28%28lib._ffi/unsafe..rkt%29._register-finalizer%29%29
See also: http://docs.racket-lang.org/foreign/Allocation_and_Finalization.html Regarding the default behavior, I think Racket does not free automatically what it did not allocate itself. So the lib you're linking to either has functions to do the allocation/deallocation, or its doc should say what you need to free yourself. Laurent On Sat, Jun 15, 2013 at 12:47 PM, Клочков Роман <[email protected]> wrote: > When I describe type > > (_fun _string -> _string) > > where can I put, whether these string c-pointers should be freed after > function call? Also, what is default behavior? > > > -- > Роман Клочков > > ____________________ > Racket Users list: > http://lists.racket-lang.org/users > >
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