# Problems with rubygems while debugging

**URL:** <https://www.ruby-forum.com/t/problems-with-rubygems-while-debugging/158854>\
**Category:** Ruby\
**Created:** [January 28, 2009, 8:57pm UTC](https://www.ruby-forum.com/t/problems-with-rubygems-while-debugging/158854 "2009-01-28T20:57:51Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![nspinne](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/n/a183cd/32.png) [@nspinne](https://www.ruby-forum.com/u/nspinne)\
**Post date:** [January 28, 2009, 8:57pm UTC](https://www.ruby-forum.com/t/problems-with-rubygems-while-debugging/158854/1 "2009-01-28T20:57:51Z")

</div>

When I try to debug a ruby file I got the following message:

$ ruby -rdebug test.rb  
Debug.rb  
Emacs support available.

/usr/local/lib/ruby/site\_ruby/1.8/ubygems.rb:10:require ‘rubygems’  
(rdb:1)

whenever I try to debug than my test.rb I run into problems with that  
rubygems.rb as you can see above:

(rdb:1) b test:3  
Set breakpoint 1 at test:3  
(rdb:1) c  
/usr/local/lib/ruby/1.8/rational.rb:78: `undefined method`gcd’ for  
Rational(1,  
2):Rational’ (NoMethodError)  
from /usr/local/lib/ruby/site\_ruby/1.8/rubygems.rb:882:in  
`require' from /usr/local/lib/ruby/site_ruby/1.8/rubygems.rb:882 from /usr/local/lib/ruby/site_ruby/1.8/ubygems.rb:10:in`require’  
from /usr/local/lib/ruby/site\_ruby/1.8/ubygems.rb:10  
/usr/local/lib/ruby/1.8/rational.rb:78: gcd = num.gcd(den)  
(rdb:1)

Can anyone help me?

---

<div class="post-metadata">

**Author:** ![nspinne](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/n/a183cd/32.png) [@nspinne](https://www.ruby-forum.com/u/nspinne)\
**Post date:** [January 28, 2009, 11:38pm UTC](https://www.ruby-forum.com/t/problems-with-rubygems-while-debugging/158854/2 "2009-01-28T23:38:35Z")

</div>

Hello, Noe

You can try this:  
ruby -rubygems -rdebug test.rb

- Alex

---

<div class="post-metadata">

**Author:** ![nspinne](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/n/a183cd/32.png) [@nspinne](https://www.ruby-forum.com/u/nspinne)\
**Post date:** [February 1, 2009, 4:30pm UTC](https://www.ruby-forum.com/t/problems-with-rubygems-while-debugging/158854/3 "2009-02-01T16:30:14Z")

</div>

Alex 2k8 wrote:

> Hello, Noe
> 
> You can try this:  
> ruby -rubygems -rdebug test.rb
> 
> - Alex

Hi Alex,

thank you very much, that’s it.

Noë