Ruby 1.9.3 IMAP segfault with OpenSSL

After upgrading to Ruby 1.9.3 I spent most of the morning trying to figure out why my IMAP code was giving a segfault

..
1.9.3p0 :001 > require 'net/imap'
 => true 
1.9.3p0 :002 > m = Net::IMAP.new('imap.gmail.com', 993, true, nil, false)
/Users/carlos/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/net/imap.rb:1439: [BUG] Segmentation fault
ruby 1.9.3p0 (2011-10-30 revision 33570) [x86_64-darwin11.3.0]

-- Control frame information -----------------------------------------------
c:0028 p:---- s:0108 b:0108 l:000107 d:000107 CFUNC  :connect
c:0027 p:0198 s:0105 b:0105 l:000104 d:000104 METHOD /Users/carlos/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/net/imap.rb:1439
c:0026 p:0172 s:0100 b:0100 l:000099 d:000099 METHOD /Users/carlos/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/net/imap.rb:1036
c:0025 p:---- s:0091 b:0091 l:000090 d:000090 FINISH
c:0024 p:---- s:0089 b:0089 l:000088 d:000088 CFUNC  :new
c:0023 p:0023 s:0083 b:0083 l:001b28 d:001470 EVAL   (irb):2
c:0022 p:---- s:0080 b:0080 l:000079 d:000079 FINISH
c:0021 p:---- s:0078 b:0078 l:000077 d:000077 CFUNC  :eval
..

Turns out it was related to OpenSSL and the fact that I forgot to install the Ruby OpenSSL extensions. Chris Irish’s post reminded me of the requirement.

$ rvm remove ruby-1.9.3
$ rvm install ruby-1.9.3 --with-openssl-dir=/opt/local --with-iconv-dir=$rvm_path/usr

..

1.9.3-p0 :003 > m = Net::IMAP.new('imap.gmail.com', 993, true, nil, false)
 => #<Net::IMAP:0x007f808500cc30 @mon_owner=nil, @mon_count=0, @mon_mutex=#, @host="imap.gmail.com", @port=993, @tag_prefix="RUBY", @tagno=0, @parser=#, @sock=#, @usessl=true, @responses={}, @tagged_responses={}, @response_handlers=[], @tagged_response_arrival=#<MonitorMixin::ConditionVariable:0x007f808500c280 @monitor=#, @cond=#<ConditionVariable:0x007f808500c258 @waiters=[], @waiters_mutex=#>>, @continuation_request_arrival=#<MonitorMixin::ConditionVariable:0x007f808312c1d0 @monitor=#, @cond=#<ConditionVariable:0x007f808312c1a8 @waiters=[], @waiters_mutex=#>>, @idle_done_cond=nil, @logout_command_tag=nil, @debug_output_bol=true, @exception=nil, @greeting=#<struct Net::IMAP::UntaggedResponse name="OK", data=#, raw_data="* OK Gimap ready for requests from 174.19.150.134 7if4443230pbt.12\r\n">, @client_thread=#, @receiver_thread=#, @receiver_thread_terminating=false> 
1.9.3-p0 :004 >