Bug #8113: ArgumentError: cannot interpret as DNS name: nil

• Status: Closed
• Assignee: akr (Akira Tanaka)
• Target version: -
• ruby -v: 2.0.0p0

[jaz_lim (Jaz Lim)]

Loading development environment (Rails 3.2.12)
irb(main):001:0> open("http://www.ruby-lang.org/") {|f|
irb(main):002:1* f.each_line {|line| p line}
irb(main):003:1> }
ArgumentError: cannot interpret as DNS name: nil
from /usr/local/lib/ruby/2.0.0/resolv.rb:1176:in create' from /usr/local/lib/ruby/2.0.0/resolv.rb:1022:in generate_candidates'
from /usr/local/lib/ruby/2.0.0/resolv.rb:1047:in resolv' from /usr/local/lib/ruby/2.0.0/resolv.rb:513:in each_resource'
from /usr/local/lib/ruby/2.0.0/resolv.rb:406:in each_address' from /usr/local/lib/ruby/2.0.0/resolv.rb:115:in block in each_address'
from /usr/local/lib/ruby/2.0.0/resolv.rb:114:in each' from /usr/local/lib/ruby/2.0.0/resolv.rb:114:in each_address'
from /usr/local/lib/ruby/2.0.0/resolv.rb:92:in getaddress' from /usr/local/lib/ruby/2.0.0/resolv.rb:43:in getaddress'
from /usr/local/lib/ruby/2.0.0/resolv-replace.rb:10:in getaddress' from /usr/local/lib/ruby/2.0.0/resolv-replace.rb:22:in initialize'
from /usr/local/lib/ruby/2.0.0/net/http.rb:877:in open' from /usr/local/lib/ruby/2.0.0/net/http.rb:877:in block in connect'
from /usr/local/lib/ruby/2.0.0/timeout.rb:51:in timeout' from /usr/local/lib/ruby/2.0.0/net/http.rb:876:in connect'
from /usr/local/lib/ruby/2.0.0/net/http.rb:861:in do_start' from /usr/local/lib/ruby/2.0.0/net/http.rb:850:in start'
from /usr/local/lib/ruby/2.0.0/open-uri.rb:313:in open_http' from /usr/local/lib/ruby/2.0.0/open-uri.rb:708:in buffer_open'
from /usr/local/lib/ruby/2.0.0/open-uri.rb:210:in block in open_loop' from /usr/local/lib/ruby/2.0.0/open-uri.rb:208:in catch'
from /usr/local/lib/ruby/2.0.0/open-uri.rb:208:in open_loop' from /usr/local/lib/ruby/2.0.0/open-uri.rb:149:in open_uri'
from /usr/local/lib/ruby/2.0.0/open-uri.rb:688:in open' from /usr/local/lib/ruby/2.0.0/open-uri.rb:34:in open'
from (irb):1
from /usr/local/lib/ruby/gems/2.0.0/gems/railties-3.2.12/lib/rails/commands/console.rb:47:in start' from /usr/local/lib/ruby/gems/2.0.0/gems/railties-3.2.12/lib/rails/commands/console.rb:8:in start'
from /usr/local/lib/ruby/gems/2.0.0/gems/railties-3.2.12/lib/rails/commands.rb:41:in <top (required)>' from script/rails:6:in require'
from script/rails:6:in `'

[zzak (zzak _)]

I cannot reproduce this with: ruby 2.1.0dev (2013-03-18 trunk 39805)
[x86_64-linux]

$irb -ropen-uri
open("http://www.ruby-lang.org/") { |f| f.each_line { |line| p line } }

Could you try it without rails?

[drbrain (Eric Hodel)]

• Category set to lib
• Status changed from Open to Closed
• Assignee set to akr (Akira Tanaka)
• ruby -v changed from 2.0.0 to 2.0.0p0

This was fixed by r39725. There is a backport ticket #8054