Re: Incorrect behaviour between tables in luajit and lua
- From: Stefano <phd.st.p@xxxxxxxxx>
- To: luajit@xxxxxxxxxxxxx
- Date: Mon, 20 Oct 2014 22:28:08 +0200
And I was going to reply as well....
On 20 October 2014 22:26, Coda Highland <chighland@xxxxxxxxx> wrote:
> This isn't a bug at all. You're invoking undefined behavior -- # is
> only well-defined for sequences, and a sequence is defined as not
> containing embedded nils.
>
> /s/ Adam
>
> On Mon, Oct 20, 2014 at 1:17 PM, Eduardo Barthel <edub4rt@xxxxxxxxx> wrote:
>> While using LuaJIT in my apps I found this bug while declaring a new table
>> with "nil" value in the middle, read the following examples, while in Lua
>> the output is 3 in LuajIT is 1.
>>
>> Lua 5.2.3 Copyright (C) 1994-2013 Lua.org, PUC-Rio
>>> a = {1,nil,2}
>>> print(#a)
>> 3
>>
>> bart@archrox:~ $ lua5.1
>> Lua 5.1.5 Copyright (C) 1994-2012 Lua.org, PUC-Rio
>>> a = {1,nil,2}
>>> print(#a)
>> 3
>>
>> bart@archrox:~ $ luajit
>> LuaJIT 2.0.3 -- Copyright (C) 2005-2014 Mike Pall. http://luajit.org/
>> JIT: ON CMOV SSE2 SSE3 SSE4.1 fold cse dce fwd dse narrow loop abc sink fuse
>>> a = {1,nil,2}
>>> print(#a)
>> 1
>>
>
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