使用pivotal-tracker gem時，爲什麼在libxml_ruby.bundle中出現分段錯誤？

Question

我有一個Ruby 1.9.2-p290程序，它使用了關鍵跟蹤器寶石。應用程序環境的配置使用RVM。當我在一臺機器上執行此應用程序時，應用程序按預期在不同的機器上工作，這會導致下面的錯誤。

爲了簡化我做了一個新的Ruby文件只包含以下內容的問題，但還是收到錯誤：

require 'pivotal-tracker' 
puts 'hello' 

鑑於這部作品一臺機器上，而不是另一個我認爲有一些因配置差異在兩者之間進行排序。

什麼是調試導致此錯誤的最佳方法？

預先感謝您！

> /Users/isuttle/.rvm/gems/ruby-1.9.2-p290/gems/libxml-ruby-1.1.4/lib/libxml_ruby.bundle: 
> [BUG] Segmentation fault ruby 1.9.2p290 (2011-07-09 revision 32553) 
> [x86_64-darwin10.8.0] 
> 
> -- control frame ---------- c:0027 p:-540275480 s:0094 b:0094 l:000093 
> d:000093 TOP c:0026 p:---- s:0092 b:0092 l:000091 d:000091 CFUNC 
> :require c:0025 p:0174 s:0088 b:0088 l:000087 d:000087 METHOD 
> /Users/isuttle/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:55 
> c:0024 p:0074 s:0081 b:0081 l:000080 d:000080 TOP 
> /Users/isuttle/.rvm/gems/ruby-1.9.2-p290/gems/libxml-ruby-1.1.4/lib/libxml.rb:9 
> c:0023 p:---- s:0079 b:0079 l:000078 d:000078 FINISH c:0022 p:---- 
> s:0077 b:0077 l:000076 d:000076 CFUNC :require c:0021 p:0174 s:0073 
> b:0073 l:000072 d:000072 METHOD 
> /Users/isuttle/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:55 
> c:0020 p:0011 s:0066 b:0066 l:000065 d:000065 TOP 
> /Users/isuttle/.rvm/gems/ruby-1.9.2-p290/gems/libxml-ruby-1.1.4/lib/xml.rb:11 
> c:0019 p:---- s:0064 b:0064 l:000063 d:000063 FINISH c:0018 p:---- 
> s:0062 b:0062 l:000061 d:000061 CFUNC :require c:0017 p:0174 s:0058 
> b:0058 l:000057 d:000057 METHOD 
> /Users/isuttle/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:55 
> c:0016 p:0035 s:0051 b:0051 l:000050 d:000050 TOP 
> /Users/isuttle/.rvm/gems/ruby-1.9.2-p290/gems/happymapper-0.3.2/lib/happymapper.rb:3 
> c:0015 p:---- s:0049 b:0049 l:000048 d:000048 FINISH c:0014 p:---- 
> s:0047 b:0047 l:000046 d:000046 CFUNC :require c:0013 p:0174 s:0043 
> b:0043 l:000042 d:000042 METHOD 
> /Users/isuttle/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:55 
> c:0012 p:0035 s:0036 b:0036 l:000035 d:000035 TOP 
> /Users/isuttle/.rvm/gems/ruby-1.9.2-p290/gems/pivotal-tracker-0.4.1/lib/pivotal-tracker.rb:3 
> c:0011 p:---- s:0034 b:0034 l:000033 d:000033 FINISH c:0010 p:---- 
> s:0032 b:0032 l:000031 d:000031 CFUNC :require c:0009 p:0073 s:0028 
> b:0028 l:000024 d:000027 BLOCK 
> <internal:lib/rubygems/custom_require>:33 c:0008 p:0014 s:0025 b:0025 
> l:000024 d:000024 METHOD <internal:lib/rubygems/custom_require>:29 
> c:0007 p:0011 s:0020 b:0020 l:000019 d:000019 TOP 
> /Users/isuttle/Projects/amazon_tracker/amzn_iteration.rb:1 c:0006 
> p:---- s:0018 b:0018 l:000017 d:000017 FINISH c:0005 p:---- s:0016 
> b:0016 l:000015 d:000015 CFUNC :require c:0004 p:0013 s:0012 b:0012 
> l:000011 d:000011 METHOD <internal:lib/rubygems/custom_require>:29 
> c:0003 p:0011 s:0007 b:0007 l:0014d8 d:001660 EVAL sample.rb:1 
> c:0002 p:---- s:0004 b:0004 l:000003 d:000003 FINISH c:0001 p:0000 
> s:0002 b:0002 l:0014d8 d:0014d8 TOP 
> 
> Ruby level backtrace information sample.rb:1:in `<main>' 
> <internal:lib/rubygems/custom_require>:29:in `require' 
> <internal:lib/rubygems/custom_require>:29:in `require' 
> /Users/isuttle/Projects/amazon_tracker/amzn_iteration.rb:1:in `<top 
> (required)>' <internal:lib/rubygems/custom_require>:29:in `require' 
> <internal:lib/rubygems/custom_require>:33:in `rescue in require' 
> <internal:lib/rubygems/custom_require>:33:in `require' 
> /Users/isuttle/.rvm/gems/ruby-1.9.2-p290/gems/pivotal-tracker-0.4.1/lib/pivotal-tracker.rb:3:in 
> `<top (required)>' 
> /Users/isuttle/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:55:in 
> `require' 
> /Users/isuttle/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:55:in 
> `require' 
> /Users/isuttle/.rvm/gems/ruby-1.9.2-p290/gems/happymapper-0.3.2/lib/happymapper.rb:3:in 
> `<top (required)>' 
> /Users/isuttle/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:55:in 
> `require' 
> /Users/isuttle/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:55:in 
> `require' 
> /Users/isuttle/.rvm/gems/ruby-1.9.2-p290/gems/libxml-ruby-1.1.4/lib/xml.rb:11:in 
> `<top (required)>' 
> /Users/isuttle/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:55:in 
> `require' 
> /Users/isuttle/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:55:in 
> `require' 
> /Users/isuttle/.rvm/gems/ruby-1.9.2-p290/gems/libxml-ruby-1.1.4/lib/libxml.rb:9:in 
> `<top (required)>' 
> /Users/isuttle/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:55:in 
> `require' 
> /Users/isuttle/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:55:in 
> `require' 

Answer 1

看起來像libxml-ruby是segfaulting的一部分。我當系統庫已被更新，可能之前已經有這樣的：

• 系統更新（如雪豹獅子）
• 包更新（例如自制或使用MacPorts）

libxml-ruby是編譯爲特定版本的庫libxml2，如果庫然後更新它有時會工作一點，但通常是不穩定的（像這樣）。你可以試着用類似的方法強迫它重新編譯：

$ gem uninstall libxml-ruby 
$ gem install pivotal-tracker