JRuby 9.0.0.0.rc1/1.7.20.1 发布

内容简介：JRuby 9.0.0.0.rc1/1.7.20.1 发布

JRuby 9.0.0.0.rc1 发布，此版本是 JRuby 团队经过多年的努力和大规模重新启动一些 JRuby 子系统的结果。此版本兼容 Ruby 2.2.x，并且同步 C Ruby。

JRuby 9000 主要特性：

• Ruby 2.2 兼容

• 基于一个传统编译器设计的优化运行时
  

• 新 POSIX 友好 IO 和 Process

• 可以完全从 MRI 移植编码/转码逻辑
  

相比 pre2 的重要更新

• Updated to Rubygems 2.4.8 addressing CVE-2015-1855

• Several parser issues (also fixed in ripper)

• Optimized multiple assignment

• Several added smaller missing methods for better 2.2 compatibility

• A couple of bugs involving nested exceptions/ensures and $!

• 46 issues fixed for 9.0.0.0.rc1

JRuby 9000 初步支持 Truffle 语言实现框架和 Oracle 实验室的 Graal VM。详情请看 JRuby Wiki 。

JRuby 9.0.0.0.rc1 issues

• #3022 - Don't call modify() on RubyStrings so eagerly when freezing them

• #3019 - Small string values backed by HUGE non-shared ByteList leading to large memory usage under 9k

• #3016 - OutOfMemoryError in 9k on code with very large methods

• #3010 - 9k has different scoping behavior than MRI

• #3009 - LocalJumpError: yield called out of block in JRuby 9.0.0.0.pre2

• #3008 - Module#included is private when called with super

• #3007 - splats with non-array like values

• #3006 - add recursion guard in Comparable.

• #3002 - Don't warn on private attribute accessors to match CRuby

• #2993 - Many failures in Sequel tests on [RuntimeError] exception expected, not Class: <NoMethodError>  Message: <"undefined method `[]' for nil:NilClass">

• #2986 - certain require do not load extension Service class

• #2984 - Socket.pair is not implemented

• #2983 - Net::HTTP can't ignore http.proxyHost of JVM System Property

• #2976 - Regression: Sequel's literals contain additional quotation marks under JRuby 9k head but not under pre2

• #2975 - Requiring Sequel triggers false warnings `already initialized constant`

• #2974 - NotImplementedError: waitpid unsupported or native support failed to load on OS X 10.9.5 / OpenJDK 8 / rbenv

• #2959 - JRuby 9k-pre2 throws IOError when reading from $stdin

• #2957 - JRuby 9.0.0.0.pre2 starts hanging while reading from a socket

• #2939 - Issue #2924

• #2924 - Issue in org.jruby.util.TypeConverter CheckType

• #2920 - Proc from Method breaks encoded parameter list

• #2919 - Add another layer of try/finally around rescue/ensure to reset $!.

• #2918 - Method#parameters doesn't annotate required parameters correctly

• #2916 - Multiple assignment has too much overhead

• #2910 - $! does not get cleared under certain circumstances

• #2905 - Different Regexp behavior from MRI

• #2904 - require 'ripper' yields const already init warnings

• #2899 - Fix for issue 2896 on master : Symbol#inspect with utf8 encode string

• #2887 - jrubyc failing - TypeError: failed to coerce org.objectweb.asm.ClassWriter to org.jruby.org.objectweb.asm.ClassVisitor

• #2877 - Implementation of initialize_copy for BigDecimal (fix #2868)

• #2871 - Enabling tty for powerpc64

• #2869 - NameError different behavior

• #2868 - BigDecimal can not be copied

• #2850 - Fannkuch-redux is less than half as fast in 9k as in 1.7

• #2772 - Make Dir raise Errno::EACCES

• #2756 - Allow File.open and File.new with 4 arguments

• #2744 - Syntax error with file that has OK syntax with MRI 2.2

• #2724 - Socket.getaddrinfo reverse_lookup

• #2616 - Fix power of 0 and 1 issues in Rational

• #2605 - Fix File.read with UTF-16LE

• #2603 - Add support for named captures in StringScanner (fixes #1067)

• #2563 - RubyArray#flatten! uses `respond_to?` unlike the original [lotus]

• #2475 - Truffle: Understand and reduce impact of Truffle on the distribution size

• #2036 - Demonstrate pedantic option

• #1955 - -X... and -X? options to search for properties.

• #1629 - Another unexpected kDO_BLOCK error in parser

同时还发布了 JRuby 1.7.20.1 版本，是 JRuby 1.7.0 以来的第 24 个更新版本，主要是兼容 Ruby 1.9.3。此版本安全更新只是升级 Rubygems 到版本 2.4.8，解决 CVE-2015-1855 漏洞。强烈建议升级！

• Homepage: http://www.jruby.org/

• Download: http://www.jruby.org/download

JRuby是面向Ruby、基于 Java 虚拟机(JVM)的一种解释程序，它结合了Ruby语言的简易性和功能强大的JVM的执行机制，包括与Java库 全面集成。Rails彻底加快及简化了Web应用的开发，不过它让人觉得不够成熟，特别是在高端企业级功能方面。另一方面，Java平台及其虚拟机、库和 应用服务器的速度、稳定性和功能方面却一直在提升，现在已被公认为是开发高端服务器应用的领先平台。不过如果Java平台不与Ruby等新兴语言联系在一 起，就有可能落后于流行趋势。

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