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On Tue, Jun 7, 2011 at 10:54 AM, Fabio Kaminski <> wrote:
> Hi Folks,
> Im trying to get less memory copy as possible with luajit FFI, and in
> the api to get your hands in a (void *) or (char *) pointer
> is copying it through "ffi.string()" wich in turns, will create a lua string..
> my first question: why cant ffi.string() reuse the given pointer.. vm
> design? avoid concurrency races  from the C side?

Because you may change the memory later on which violates the
immutability of Lua strings.

- Patrick Donnelly