Re: ffi : creating char **
- From: Nagaev Boris <bnagaev@xxxxxxxxx>
- To: luajit@xxxxxxxxxxxxx
- Date: Mon, 6 Jun 2016 19:03:00 +0300
On Mon, Jun 6, 2016 at 6:52 PM, Iwan Budi Kusnanto <ibk@xxxxxxxxxxxx> wrote:
Hi All,
How is the correct way to create `char **` with ffi?
I have done these ways:
-- create char[][]
local data = ffi.new("char["..k.."]["..m.."]")
-- cast it when calling C function
ffi.cast("char **", data)
But it doesn't work for me, i got segmentation fault error.
--
Iwan Budi Kusnanto
Hi,
char** and char[k][m] are different data structures.
char** is a pointer to pointer to char
char[k][m] is 2-dimensional array of char, which is stored as char[m]
repeated k times and can be casted to char* not to char**
--
Best regards,
Boris Nagaev
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