# (BUG in svn/trunk?) - superclass mismatch for any subclass o

**URL:** <https://www.ruby-forum.com/t/bug-in-svn-trunk-superclass-mismatch-for-any-subclass-o/100591>\
**Category:** Rails\
**Created:** [February 3, 2006, 8:40am UTC](https://www.ruby-forum.com/t/bug-in-svn-trunk-superclass-mismatch-for-any-subclass-o/100591 "2006-02-03T08:40:01Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![taintedsushi](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/ee59a6/32.png) [@taintedsushi](https://www.ruby-forum.com/u/taintedsushi)\
**Post date:** [February 3, 2006, 8:40am UTC](https://www.ruby-forum.com/t/bug-in-svn-trunk-superclass-mismatch-for-any-subclass-o/100591/1 "2006-02-03T08:40:01Z")

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I track svn/trunk of Rails using svn:externals

Some change to Rails committed in the last 1-2 days broke my subclass  
of ApplicationController

The example, below, works with Rails 1.0, but in today’s svn, it dies  
with the following error:

“superclass mismatch for class FooController”

class ApplicationController \< ActionController::Base  
end

class FooController \< ApplicationController  
end

The reason I’m emailing the list instead of filing a bug report is to  
see if anyone knows if this change was intentional. I hope not,  
because I really do need to have a subclass of ApplicationController.

Any advice appreciated.

- Miles

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**Author:** ![taintedsushi](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/ee59a6/32.png) [@taintedsushi](https://www.ruby-forum.com/u/taintedsushi)\
**Post date:** [February 3, 2006, 8:46am UTC](https://www.ruby-forum.com/t/bug-in-svn-trunk-superclass-mismatch-for-any-subclass-o/100591/2 "2006-02-03T08:46:02Z")

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Hello Miles,

2006/2/3, Miles K. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid):

> I track svn/trunk of Rails using svn:externals

I do the same.

> Some change to Rails committed in the last 1-2 days broke my subclass  
> of ApplicationController

Actually, I tracked it down to r3524. If I load r3523, my app works  
fine, if r3524, I get the following backtrace:

NameError: constant Object::ApplicationController not defined  
./script/…/config/…/vendor/rails/activesupport/lib/active\_support/core\_ext/class/removal.rb:14:in  
`remove_const' ./script/../config/../vendor/rails/activesupport/lib/active_support/core_ext/class/removal.rb:14:in `send’  
./script/…/config/…/vendor/rails/activesupport/lib/active\_support/core\_ext/class/removal.rb:14:in  
`remove_class' ./script/../config/../vendor/rails/activesupport/lib/active_support/core_ext/class/removal.rb:11:in `each’  
./script/…/config/…/vendor/rails/activesupport/lib/active\_support/core\_ext/class/removal.rb:11:in  
`remove_class' ./script/../config/../vendor/rails/railties/lib/dispatcher.rb:56:in `reset\_application!’  
./script/…/config/…/vendor/rails/railties/lib/dispatcher.rb:74:in  
`reset_after_dispatch' ./script/../config/../vendor/rails/railties/lib/dispatcher.rb:46:in `dispatch’  
./script/…/config/…/vendor/rails/railties/lib/webrick\_server.rb:117:in  
`handle_dispatch' ./script/../config/../vendor/rails/railties/lib/webrick_server.rb:83:in `service’  
C:/ruby/lib/ruby/1.8/webrick/httpserver.rb:104:in `service' C:/ruby/lib/ruby/1.8/webrick/httpserver.rb:65:in `run’  
C:/ruby/lib/ruby/1.8/webrick/server.rb:155:in `start_thread' C:/ruby/lib/ruby/1.8/webrick/server.rb:144:in `start’  
C:/ruby/lib/ruby/1.8/webrick/server.rb:144:in `start_thread' C:/ruby/lib/ruby/1.8/webrick/server.rb:94:in `start’  
C:/ruby/lib/ruby/1.8/webrick/server.rb:89:in `each' C:/ruby/lib/ruby/1.8/webrick/server.rb:89:in `start’  
C:/ruby/lib/ruby/1.8/webrick/server.rb:79:in `start' C:/ruby/lib/ruby/1.8/webrick/server.rb:79:in `start’  
./script/…/config/…/vendor/rails/railties/lib/webrick\_server.rb:69:in  
`dispatch' ./script/../config/../vendor/rails/railties/lib/commands/servers/webrick.rb:59 C:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:21:in `require\_\_’  
C:/ruby/lib/ruby/site\_ruby/1.8/rubygems/custom\_require.rb:21:in  
`require' ./script/../config/../vendor/rails/activesupport/lib/active_support/dependencies.rb:283:in `require’  
./script/…/config/…/vendor/rails/railties/lib/commands/server.rb:28  
C:/ruby/lib/ruby/site\_ruby/1.8/rubygems/custom\_require.rb:21:in  
`require__' C:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:21:in `require’  
script/server:3

This is a different bug than yours, but it seemed related enough that  
I’d mention it here.

Bye !

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<div class="post-metadata">

**Author:** ![taintedsushi](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/ee59a6/32.png) [@taintedsushi](https://www.ruby-forum.com/u/taintedsushi)\
**Post date:** [February 3, 2006, 7:01pm UTC](https://www.ruby-forum.com/t/bug-in-svn-trunk-superclass-mismatch-for-any-subclass-o/100591/3 "2006-02-03T19:01:41Z")

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I could swear I saw this exact problem on the list in the last week or  
so… give the  
archives a search…

b

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<div class="post-metadata">

**Author:** ![taintedsushi](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/ee59a6/32.png) [@taintedsushi](https://www.ruby-forum.com/u/taintedsushi)\
**Post date:** [February 3, 2006, 7:07pm UTC](https://www.ruby-forum.com/t/bug-in-svn-trunk-superclass-mismatch-for-any-subclass-o/100591/4 "2006-02-03T19:07:47Z")

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Hi Miles,

On 2/3/06, Miles K. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote:

> class ApplicationController \< ActionController::Base  
> Any advice appreciated.

Yep, trunk is broken at the moment. For now I’d suggest rolling back  
to revision 3479.

To do this, run “svn propedit svn:externals vendor” from your  
application’s directory. Then change the line that reads

rails [Peak Obsession](http://dev.rubyonrails.com/svn/rails/trunk)

to

rails -r3479 [Peak Obsession](http://dev.rubyonrails.com/svn/rails/trunk)

and svn up.

–  
sam

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<div class="post-metadata">

**Author:** ![taintedsushi](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/ee59a6/32.png) [@taintedsushi](https://www.ruby-forum.com/u/taintedsushi)\
**Post date:** [February 4, 2006, 6:21pm UTC](https://www.ruby-forum.com/t/bug-in-svn-trunk-superclass-mismatch-for-any-subclass-o/100591/5 "2006-02-04T18:21:00Z")

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> > Some change to Rails committed in the last 1-2 days broke my subclass  
> > of ApplicationController
> > 
> > The example, below, works with Rails 1.0, but in today’s svn, it dies  
> > with the following error:

## Trunk has now been fixed.

David Heinemeier H.  
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