From: "theymos" <theymos@mm•st>
To: bitcoin-development@lists•sourceforge.net
Subject: Re: [Bitcoin-development] Alternative to OP_EVAL
Date: Thu, 29 Dec 2011 02:44:19 -0600 [thread overview]
Message-ID: <1325148259.14431.140661016987461@webmail.messagingengine.com> (raw)
In-Reply-To: <alpine.LRH.2.00.1112290111310.22327@theorem.ca>
On Thu, Dec 29, 2011, at 01:55 AM, roconnor@theorem•ca wrote:
> The number of operations executed is still bounded by the number of
> operations occurring in the script. With the OP_EVAL proposal the
> script language becomes essentially Turing complete, with only an
> artificial limit on recursion depth preventing arbitrary computation
> and there is no way to know what code will run without executing it.
Even if OP_EVAL allowed infinite depth, you'd still need to explicitly
specify all operations performed, since there is no way of looping.
I think that something like OP_EVAL will eventually be used to improve
Script in a backward-compatible way (enable the disabled math ops, fix
bugs, etc.), so the mechanism might as well be used now. The only
advantage I see with OP_CODEHASH is that script ops won't need to be in
Script "strings".
next prev parent reply other threads:[~2011-12-29 8:44 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-29 6:55 roconnor
2011-12-29 8:44 ` theymos [this message]
2011-12-29 16:42 ` roconnor
2011-12-30 12:01 ` Chris Double
2011-12-30 17:19 ` roconnor
2012-01-02 15:14 ` Stefan Thomas
2012-01-02 15:59 ` Gavin Andresen
2012-01-02 16:42 ` roconnor
2012-01-02 17:10 ` Stefan Thomas
2011-12-31 9:54 ` Joel Joonatan Kaartinen
2011-12-31 17:28 ` Zell Faze
2011-12-29 16:23 ` Gavin Andresen
2011-12-29 17:01 ` roconnor
2011-12-29 17:06 ` Luke-Jr
2011-12-29 18:00 ` Gavin Andresen
2011-12-29 19:54 ` Stefan Thomas
2011-12-29 19:08 ` Pieter Wuille
2011-12-29 21:00 ` Pieter Wuille
2011-12-29 21:31 ` Alan Reiner
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