Re: LuaJIT segfault

[Pierre Chapuis <catwell@...>]

On 08.11.2011 11:30, Daurnimator wrote:

> See http://luajit.org/ext_ffi_semantics.html#init
>
> Byte arrays may also be initialized with a Lua string. This copies 
> the
> whole string plus a terminating zero-byte. The copy stops early only
> if the array has a known, fixed size.
>
>
> I guess a VLA (A variable-length array) is not of a known, fixed 
> size.
> (though I guess it should be.....)

My reasoning is: I'm using nelem
(http://luajit.org/ext_ffi_api.html#ffi_new) to copy a string that
represents raw bytes (and has no reason to be \0-terminated).
It should behave approximately like strncpy().

But what I find the most strange is that the segfault doesn't happen
at that line, it happens later when the memory is garbage collected.

--
Pierre Chapuis