From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Original-To: poffice@blade.nagaokaut.ac.jp Delivered-To: poffice@blade.nagaokaut.ac.jp Received: from kankan.nagaokaut.ac.jp (kankan.nagaokaut.ac.jp [133.44.2.24]) by blade.nagaokaut.ac.jp (Postfix) with ESMTP id 0EF7A17DC9A3 for ; Wed, 26 Nov 2014 17:28:11 +0900 (JST) Received: from funfun.nagaokaut.ac.jp (smtp.nagaokaut.ac.jp [133.44.2.201]) by kankan.nagaokaut.ac.jp (Postfix) with ESMTP id 17321B5D8C8 for ; Wed, 26 Nov 2014 17:18:42 +0900 (JST) Received: from funfun.nagaokaut.ac.jp (localhost.nagaokaut.ac.jp [127.0.0.1]) by funfun.nagaokaut.ac.jp (Postfix) with ESMTP id 16F1B97A840 for ; Wed, 26 Nov 2014 17:18:44 +0900 (JST) X-Virus-Scanned: amavisd-new at nagaokaut.ac.jp Authentication-Results: funfun.nagaokaut.ac.jp (amavisd-new); dkim=fail (1024-bit key) reason="fail (message has been altered)" header.d=sendgrid.me Received: from funfun.nagaokaut.ac.jp ([127.0.0.1]) by funfun.nagaokaut.ac.jp (funfun.nagaokaut.ac.jp [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 9TGuisISv2Jh for ; Wed, 26 Nov 2014 17:18:43 +0900 (JST) Received: from voscc.nagaokaut.ac.jp (voscc.nagaokaut.ac.jp [133.44.1.100]) by funfun.nagaokaut.ac.jp (Postfix) with ESMTP id 90DAC97A836 for ; Wed, 26 Nov 2014 17:18:43 +0900 (JST) Received: from neon.ruby-lang.org (neon.ruby-lang.org [221.186.184.75]) by voscc.nagaokaut.ac.jp (Postfix) with ESMTP id 277F395241A for ; Wed, 26 Nov 2014 17:18:40 +0900 (JST) Received: from [221.186.184.76] (localhost [IPv6:::1]) by neon.ruby-lang.org (Postfix) with ESMTP id 2B5B4120512; Wed, 26 Nov 2014 17:18:38 +0900 (JST) X-Original-To: ruby-core@ruby-lang.org Delivered-To: ruby-core@ruby-lang.org Received: from o10.shared.sendgrid.net (o10.shared.sendgrid.net [173.193.132.135]) by neon.ruby-lang.org (Postfix) with ESMTPS id D2C99120436 for ; Wed, 26 Nov 2014 17:18:34 +0900 (JST) DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=sendgrid.me; h=from:to:references:subject:mime-version:content-type:content-transfer-encoding:list-id; s=smtpapi; bh=mAeAmRzHxKg02nhz0vVrS+zJu5A=; b=nwpFKTVjoT0fgZnITV 8l0XbQL9iG1rF2MlowQ6I3S5pWgIT/tjwHMTW+r99SMwTcwcD8YFbQutZbk/Y6es L/tq72LRntbXflFpj72v9PJYUQ07d+WVzAZTWAf/tQmZ1qN211k5uYuBaTNONFXj LgCP+LUxX2SZlCHn+iXce01Ds= Received: by filter0190p1mdw1.sendgrid.net with SMTP id filter0190p1mdw1.22280.54758CD510 2014-11-26 08:18:30.340592264 +0000 UTC Received: from herokuapp.com (ec2-54-161-195-167.compute-1.amazonaws.com [54.161.195.167]) by ismtpd-010 (SG) with ESMTP id 149eb2e2500.4cae.6375 for ; Wed, 26 Nov 2014 08:18:30 +0000 (UTC) Date: Wed, 26 Nov 2014 08:18:29 +0000 From: normalperson@yhbt.net To: ruby-core@ruby-lang.org Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Redmine-MailingListIntegration-Message-Ids: 40864 X-Redmine-Project: ruby-trunk X-Redmine-Issue-Id: 8543 X-Redmine-Issue-Author: alvoskov X-Redmine-Issue-Assignee: ko1 X-Redmine-Sender: normalperson X-Mailer: Redmine X-Redmine-Host: bugs.ruby-lang.org X-Redmine-Site: Ruby Issue Tracking System X-Auto-Response-Suppress: OOF Auto-Submitted: auto-generated X-SG-EID: ync6xU2WACa70kv/Ymy4QrNMhiuLXJG8OTL2vJD1yS7nKRGQ2LRKGWwE3vXEBiHEh8mGJs5Nw3AhX1 rPmDakLHm57oWbPo47/eJ6eUIdHEKvkL5enNsv6yYrNC/MkNn7ZSB8DR2SjTZTDNCWbaoLlezrjmJS dQ1Icm8moNLzNn9aj0YPmHh/BGcx/Lst5ZnH X-ML-Name: ruby-core X-Mail-Count: 66478 Subject: [ruby-core:66478] [ruby-trunk - Feature #8543] rb_iseq_load X-BeenThere: ruby-core@ruby-lang.org X-Mailman-Version: 2.1.15 Precedence: list Reply-To: Ruby developers List-Id: Ruby developers List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: ruby-core-bounces@ruby-lang.org Sender: "ruby-core" Issue #8543 has been updated by Eric Wong. nop; nop works, but I don't think it's an improvement (or regression). I prefer to save 2 words entirely. I planned to workaround the issue by doing ISeq#load twice: first = iseq.to_a # useless jump|nop here junk = ISeq.load(first) # second pass optimization removes jump|nop a = ISeq.load(junk.to_a) b = ISeq.load(a.to_a) assert_equal a, b But I encountered other bugs with to_a + load on test/ruby/test_io.rb and test_settracefunc.rb which I have not investigated, yet... Works-in-progress: [PATCH 1/2] http://80x24.org/spew/m/iseq_calc_param_size%40r48578.txt [PATCH 2/2] http://80x24.org/spew/m/rb_iseq_load_fix-v4%40r48578.txt ---------------------------------------- Feature #8543: rb_iseq_load https://bugs.ruby-lang.org/issues/8543#change-50094 * Author: Alexey Voskov * Status: Open * Priority: Low * Assignee: Koichi Sasada * Category: YARV * Target version: current: 2.2.0 ---------------------------------------- I noticed an unusual behaviour of undocumented rb_iseq_load function. Its work differs in different Ruby versions. I'm trying to protect some Ruby source code by its conversion to YARV p-code and using the next strategy: 1. Convert code to array ~~~ruby data = RubyVM::InstructionSequence.compile_file('hello.rb').to_a ~~~ 2. Pass a compiled source to the rb_iseq_load function and evaluate it ~~~ruby iseq = iseq_load.(data) iseq.eval ~~~ Sample programs are supplied in the attachments. "hello.rb" ```ruby puts "tralivali" def funct(a,b) a**b end 3.times { |i| puts "Hello, world#{funct(2,i)}!" } ``` The differences Ruby 1.9.3 (ruby 1.9.3p194 (2012-04-20) [i386-mingw32]) Correct work. Output: ``` tralivali Hello, world1! Hello, world2! Hello, world4! ``` Ruby 2.0.0 (ruby 2.0.0p193 (2013-05-14) [x64-mingw32]) Incorrect work (omits the code inside code blocks). Output ``` tralivali ``` Attempts of loading bigger programs by means of rb_iseq_load in Ruby 2.0.0 usually ends with a segmentation fault. Such behaviour also can be reproduced by means of iseq Ruby extension ("for iseq freaks") https://github.com/wanabe/iseq P.S. I understand that it is an undocumented feature. ---Files-------------------------------- hello.rb (102 Bytes) rb_pack.rb (931 Bytes) iseq-load-test3.rb (210 Bytes) iseq-load-test3-file.rb (369 Bytes) please-fix-rb_iseq_load-thank-you.pdf (444 KB) -- https://bugs.ruby-lang.org/