Re: LuaJIT optimization bug?

[Pierre Chapuis <catwell@...>]

On Wed, 17 Aug 2011 16:09:25 +0200, Pierre Chapuis wrote:

> To give you an idea of the butterfly effect I face:
>
>   -- incorrect result
>   bit_set_1(_bset,_byte,_bit)
>
>   -- incorrect result
>   bit_set_1(_bset,_byte,_bit)
>   assert(true)
>
>   -- incorrect result
>   bit_set_1(_bset,_byte,_bit)
>   assert(true)
>   assert(true)
>
>   -- correct result (!)
>   bit_set_1(_bset,_byte,_bit)
>   assert(true)
>   assert(true)
>   assert(true)
>
>   -- incorrect result (!!!)
>   bit_set_1(_bset,_byte,_bit)
>   assert(true)
>   assert(true)
>   assert(true)
>   assert(true)

It's actually worse than I thought... It works with 3, 6 or
19 successive assert(true) statements. It doesn't work for any
other number of assert(true) statements between 0 and 20.

Chaos? (http://www.wolframscience.com/nksonline/page-27)

--
Pierre 'catwell' Chapuis