From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on yquem.inria.fr X-Spam-Level: X-Spam-Status: No, score=0.0 required=5.0 tests=AWL autolearn=disabled version=3.1.3 Received: from mail1-relais-roc.national.inria.fr (mail1-relais-roc.national.inria.fr [192.134.164.82]) by yquem.inria.fr (Postfix) with ESMTP id 1D3F8BC6C for ; Thu, 10 Jan 2008 18:17:01 +0100 (CET) X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: Ao8CAOnhhUfUnw6EhWdsb2JhbACCNI1rAQEBCAQGBwgTB5kl X-IronPort-AV: E=Sophos;i="4.24,267,1196636400"; d="scan'208";a="6506264" Received: from pih-relay05.plus.net ([212.159.14.132]) by mail1-smtp-roc.national.inria.fr with ESMTP; 10 Jan 2008 18:17:00 +0100 Received: from [80.229.56.224] (helo=beast.local) by pih-relay05.plus.net with esmtp (Exim) id 1JD11X-0004oG-0y for caml-list@yquem.inria.fr; Thu, 10 Jan 2008 17:16:59 +0000 From: Jon Harrop Organization: Flying Frog Consultancy Ltd. To: caml-list@yquem.inria.fr Subject: Hash clash in polymorphic variants Date: Thu, 10 Jan 2008 17:09:13 +0000 User-Agent: KMail/1.9.7 MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200801101709.14110.jon@ffconsultancy.com> X-Spam: no; 0.00; hash:01 variants:01 constructors:01 avoided:01 clashing:01 hash:01 variants:01 frog:98 polymorphic:01 polymorphic:01 clash:05 likelihood:11 ltd:87 products:86 should:13 ISTR advice that constructors sharing the first few characters should be avoided in order to reduce the likelihood of clashing hash values for polymorphic variants. Is that right? -- Dr Jon D Harrop, Flying Frog Consultancy Ltd. http://www.ffconsultancy.com/products/?e