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 ACE7217CC763 for ; Wed, 26 Nov 2014 10:58:13 +0900 (JST) Received: from funfun.nagaokaut.ac.jp (funfun.nagaokaut.ac.jp [133.44.2.201]) by kankan.nagaokaut.ac.jp (Postfix) with ESMTP id CA8EEB5D893 for ; Wed, 26 Nov 2014 10:48:42 +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 F33E597A826 for ; Wed, 26 Nov 2014 10:48:43 +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 LAIBJxcY6pDb for ; Wed, 26 Nov 2014 10:48:43 +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 D089097A820 for ; Wed, 26 Nov 2014 10:48:43 +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 758B7952408 for ; Wed, 26 Nov 2014 10:48:42 +0900 (JST) Received: from [221.186.184.76] (localhost [IPv6:::1]) by neon.ruby-lang.org (Postfix) with ESMTP id C22191204E4; Wed, 26 Nov 2014 10:48:39 +0900 (JST) X-Original-To: ruby-core@ruby-lang.org Delivered-To: ruby-core@ruby-lang.org Received: from o2.heroku.sendgrid.net (o2.heroku.sendgrid.net [67.228.50.55]) by neon.ruby-lang.org (Postfix) with ESMTPS id B8A77120487 for ; Wed, 26 Nov 2014 10:48:35 +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=D6AmF8H1xJ6h2RlmcqTK9SJKZBk=; b=v6WnnKIPQSj0AepYjd b7bLgV0OmpLFP7BGYc88BAdWngg5JXEhWzCX+yggqUpPm9sAwn/WBjUlXk76QGbQ ZKweUw29uhymlXEkjXdkGn9Z+izHjUCEqQ1MuneTMptit3Zn+diNdbHeSpCvY1Ab 9buqYgglPbkeKAcfHvgpLXUMA= Received: by filter0198p1mdw1.sendgrid.net with SMTP id filter0198p1mdw1.28379.5475316F18 2014-11-26 01:48:31.77828416 +0000 UTC Received: from herokuapp.com (ec2-184-73-150-231.compute-1.amazonaws.com [184.73.150.231]) by ismtpd-018 (SG) with ESMTP id 149e9c91c35.62f4.12b07 for ; Wed, 26 Nov 2014 01:48:31 +0000 (UTC) Date: Wed, 26 Nov 2014 01:48:31 +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: 40852 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/Ymy4QrNMhiuLXJG8OTL2vJD1yS5Y/ZQpFESdw6nqnnOolp8kKkhCBFoOFacRIa T8Ls6hZ1L8JqVlq2MJkFhLBnf++Uh8auODqrqDZOTAEznqMsqwuBzVrH+6vPWrKrFv6Yw614mBriVD ZOHuoUw+PPWEsb5OzWDSKCm3IoGddS/rlIIU X-ML-Name: ruby-core X-Mail-Count: 66467 Subject: [ruby-core:66467] [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. ko1: thank you for checking, any comment on the extra jumps insns which I hack around by disabling peephole optimization? It seems caused by the following in iseq_set_sequence: else if (orig_sp - sp == 0) { /* jump to next insn */ if (last_line != (unsigned int)adjust->line_no) { line_info_table[k].line_no = last_line = adjust->line_no; line_info_table[k].position = pos; k++; } generated_iseq[pos++] = BIN(jump); generated_iseq[pos++] = 0; My roundtrip test fails because: 1. iseq_peephole_optimize called in original 2. iseq_set_sequence generates useless jump (above) 3. ISeq#to_a called (showing useless jump) 4. ISeq#load on 3. array 5. iseq_peephole_optimize now deletes jump emitted in 2. 6. ISeq#to_a now has no useless jumps So now I'm trying to figure out how to eliminate the useless jump in 2 so roundtrip test always succeeds (and my normal Ruby code has no useless jump insns) ---------------------------------------- Feature #8543: rb_iseq_load https://bugs.ruby-lang.org/issues/8543#change-50085 * 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/