SystemStackError (stack level too deep) when creating new AR

Hi. I have a problem with very deep calls, causing SystemStackError.

The logs are on http://pastie.caboo.se/12890

It scares me, because I don't understand it's cause, and I fear it may
strike on production (in case it disappears in development :wink: )

Tests are passing without disturbance.
Maybe it's because of webrick, as it creates almost half of the
call-trace?
I plan to use fastcgi later.

I got this odd error when using the console, however a restart of the
console fixes it. Any thoughts?

Note that the stack level is only like 20 deep, and I have tested it and
it can go (typically) to thousands deep. So something must be using up
tons of stack space?

exceptionstack level too deepSystemStackError: stack level too deep
  from
/opt/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:1983:in
`=='
  from
/opt/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:1983:in
`==='
  from
/opt/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:1983:in
`convert_number_column_value'
  from
/opt/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:1973:in
`write_attribute'
  from
/opt/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/attribute_methods.rb:67:in
`attribute='
  from
/opt/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:1855:in
`__send__'
  from
/opt/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:1855:in
`method_missing'
  from
/opt/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:1672:in
`send'
  from
/opt/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:1672:in
`attributes='
  from
/opt/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:1671:in
`each'
  from
/opt/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:1671:in
`attributes='
  from
/opt/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:1505:in
`initialize_without_callbacks'
  from
/opt/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/callbacks.rb:225:in
`initialize'
  from
/opt/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:449:in
`new'
  from
/opt/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:449:in
`create'
  from ./db/add_multiple_zips.rb:425
  from ./db/add_multiple_zips.rb:415:in `each_line'
  from ./db/add_multiple_zips.rb:415
  from ./db/add_multiple_zips.rb:400:in `each'
  from ./db/add_multiple_zips.rb:400
  from
/opt/local/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active_support/dependencies.rb:493:in
`load'
  from
/opt/local/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active_support/dependencies.rb:493:in
`load'
  from
/opt/local/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active_support/dependencies.rb:345:in
`new_constants_in'
  from
/opt/local/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active_support/dependencies.rb:493:in
`load'
  from (irb):25>>

Arsen7 wrote: