# Rio and ruby 1.9

**URL:** <https://www.ruby-forum.com/t/rio-and-ruby-1-9/177649>\
**Category:** Ruby\
**Created:** [October 21, 2009, 3:51pm UTC](https://www.ruby-forum.com/t/rio-and-ruby-1-9/177649 "2009-10-21T15:51:02Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![casper\_the\_ghost](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/58956e/32.png) [@casper\_the\_ghost](https://www.ruby-forum.com/u/casper_the_ghost)\
**Post date:** [October 21, 2009, 3:51pm UTC](https://www.ruby-forum.com/t/rio-and-ruby-1-9/177649/1 "2009-10-21T15:51:02Z")

</div>

This week I am trying to move my development from ruby 1.8 to ruby 1.9  
(ruby 1.9.1p243 (2009-07-16 revision 24175) [i686-linux]). I have pass  
through most of the hurdles, but one I can not fix is ‘rio’ library. I  
am using it extensively in my code. I am having following issue when I  
do “require ‘rio’” in irb. Are there anybody who have fix this or can  
point me what I need to do to fix this. Thanks.

/usr/lib/ruby/gems/1.9.1/gems/rio-0.4.2/lib/rio/base.rb:54: warning:  
undefining `object_id' may cause serious problem /usr/lib/ruby/gems/1.9.1/gems/rio-0.4.2/lib/rio/base.rb:54: warning: undefining` **send** ’ may cause serious problem  
NameError: uninitialized constant URI::REGEXP::PATTERN::PARAM  
from /usr/lib/ruby/gems/1.9.1/gems/rio-0.4.2/lib/rio/uri/  
file.rb:93:in `<module:PATTERN>' from /usr/lib/ruby/gems/1.9.1/gems/rio-0.4.2/lib/rio/uri/ file.rb:88:in`module:REGEXP’  
from /usr/lib/ruby/gems/1.9.1/gems/rio-0.4.2/lib/rio/uri/  
file.rb:87:in `<module:URI>' from /usr/lib/ruby/gems/1.9.1/gems/rio-0.4.2/lib/rio/uri/ file.rb:46:in`\<top (required)\>’  
from /usr/lib/ruby/gems/1.9.1/gems/rio-0.4.2/lib/rio/rl/  
base.rb:39:in `require' from /usr/lib/ruby/gems/1.9.1/gems/rio-0.4.2/lib/rio/rl/ base.rb:39:in`\<top (required)\>’  
from /usr/lib/ruby/gems/1.9.1/gems/rio-0.4.2/lib/rio/rl/  
builder.rb:39:in `require' from /usr/lib/ruby/gems/1.9.1/gems/rio-0.4.2/lib/rio/rl/ builder.rb:39:in`\<top (required)\>’  
from /usr/lib/ruby/gems/1.9.1/gems/rio-0.4.2/lib/rio/  
factory.rb:45:in `require' from /usr/lib/ruby/gems/1.9.1/gems/rio-0.4.2/lib/rio/ factory.rb:45:in`\<top (required)\>’  
from /usr/lib/ruby/gems/1.9.1/gems/rio-0.4.2/lib/rio.rb:56:in  
`require' from /usr/lib/ruby/gems/1.9.1/gems/rio-0.4.2/lib/rio.rb:56:in`class:Rio’  
from /usr/lib/ruby/gems/1.9.1/gems/rio-0.4.2/lib/rio.rb:53:in  
`<module:RIO>' from /usr/lib/ruby/gems/1.9.1/gems/rio-0.4.2/lib/rio.rb:52:in`\<top (required)\>’  
from (irb):1:in `require’  
from (irb):1