using activerecord 'to_xml' method crashes JRuby (and debugger)
---------------------------------------------------------------
Key: JRUBY-3270
URL: http://jira.codehaus.org/browse/JRUBY-3270
Project: JRuby
Issue Type: Bug
Components: Core Classes/Modules
Affects Versions: JRuby 1.1.7
Environment: MacOS 10.5.6, JRuby trunk r8497, activerecord 2.2.2 and
trunk
Reporter: Stephen Bannasch
Priority: Critical
Using an activerecord 'to_xml' method on an AR instance crashes JRuby (and
debugger).
The JRuby regression happened in a large commit about callbacks on Dec 18:
svn rev:8398
"Grr...I suppose I should have checked this before, but Mongrel still uses
CallbackFactory. We need to get them off it so we can delete it some day. Damn
you, crufty old dependencies!"
My tests are being run with these gems:
activerecord (2.2.2)
activerecord-jdbc-adapter (0.9)
activerecord-jdbcmysql-adapter (0.9)
Here's the test code:
filename: ar_to_xml.rb
{code:name}
require 'rubygems'
require 'activerecord'
# create a db named 'my_active_record_test'
# GRANT ALL PRIVILEGES ON my_activerecord_test.* to 'rails'@'localhost';
@logger = Logger.new $stderr
ActiveRecord::Base.logger = @logger
ActiveRecord::Base.colorize_logging = false
pool = ActiveRecord::Base.establish_connection(
:adapter => RUBY_PLATFORM =~ /java/ ? 'jdbcmysql' : 'mysql',
:username => 'rails',
:encoding => 'utf8',
:database => 'my_activerecord_test'
)
ActiveRecord::Schema.define do
drop_table :posts if pool.connection.table_exists?(:posts)
create_table :posts do |t|
t.string :subject
t.text :body
end
end
class Post < ActiveRecord::Base; end
p = Post.create(:subject => 'first post', :body => 'this is the body')
puts p.to_xml
{code}
This works fine in MRI. Here's the result in jruby svn r8497
{code}
$ jruby ar_to_xml.rb
SQL (1.4ms) SET SQL_AUTO_IS_NULL=0
-- drop_table(:posts)
SQL (1.6ms) DROP TABLE `posts`
-> 0.0025s
-> 0 rows
-- create_table(:posts)
SQL (25.9ms) CREATE TABLE `posts` (`id` int(11) DEFAULT NULL auto_increment
PRIMARY KEY, `subject` varchar(255), `body` text) ENGINE=InnoDB CHARACTER SET
utf8 COLLATE utf8_bin
-> 0.0314s
-> 0 rows
SQL (2.1ms) INSERT INTO `posts` (`subject`, `body`) VALUES('first post', 'this
is the body')
Entities$PrimitiveEntityMap:471:in `<init>': java.lang.NoClassDefFoundError:
org/jruby/util/collections/IntHashMap
from Entities$LookupEntityMap:552:in `<init>'
from Entities:754:in `<init>'
from Entities:402:in `<clinit>'
from FastXsService:28:in `fast_xs'
from FastXsServiceCallback$fast_xs_FS0:-1:in `call'
from org.jruby.runtime.callback.FastInvocationCallback:55:in `execute'
from
org.jruby.internal.runtime.methods.FullFunctionCallbackMethod:69:in `call'
from org.jruby.internal.runtime.methods.DynamicMethod:226:in `call'
from org.jruby.internal.runtime.methods.DynamicMethod:203:in `call'
from org.jruby.internal.runtime.methods.AliasMethod:60:in `call'
from org.jruby.runtime.callsite.CachingCallSite:253:in `cacheAndCall'
from org.jruby.runtime.callsite.CachingCallSite:72:in `call'
from org.jruby.ast.CallNoArgNode:61:in `interpret'
from org.jruby.ast.NewlineNode:100:in `interpret'
from org.jruby.internal.runtime.methods.DefaultMethod:156:in
`interpretedCall'
from org.jruby.internal.runtime.methods.DefaultMethod:133:in `call'
from org.jruby.internal.runtime.methods.DefaultMethod:246:in `call'
from org.jruby.runtime.callsite.CachingCallSite:273:in `cacheAndCall'
from org.jruby.runtime.callsite.CachingCallSite:112:in `call'
from org.jruby.ast.FCallOneArgNode:36:in `interpret'
from org.jruby.ast.CallTwoArgNode:59:in `interpret'
from org.jruby.ast.NewlineNode:100:in `interpret'
from org.jruby.internal.runtime.methods.DefaultMethod:156:in
`interpretedCall'
from org.jruby.internal.runtime.methods.DefaultMethod:133:in `call'
from org.jruby.internal.runtime.methods.DefaultMethod:246:in `call'
from org.jruby.runtime.callsite.CachingCallSite:273:in `cacheAndCall'
from org.jruby.runtime.callsite.CachingCallSite:112:in `call'
from org.jruby.ast.FCallOneArgNode:36:in `interpret'
from org.jruby.ast.NewlineNode:100:in `interpret'
from org.jruby.ast.CaseNode:108:in `interpret'
from org.jruby.ast.NewlineNode:100:in `interpret'
from org.jruby.internal.runtime.methods.DefaultMethod:156:in
`interpretedCall'
from org.jruby.internal.runtime.methods.DefaultMethod:133:in `call'
from org.jruby.internal.runtime.methods.DefaultMethod:246:in `call'
from org.jruby.runtime.callsite.CachingCallSite:273:in `cacheAndCall'
from org.jruby.runtime.callsite.CachingCallSite:112:in `call'
from org.jruby.ast.FCallOneArgNode:36:in `interpret'
from org.jruby.ast.NewlineNode:100:in `interpret'
from org.jruby.ast.EvStrNode:82:in `interpret'
from org.jruby.ast.DStrNode:82:in `appendToString'
from org.jruby.ast.DStrNode:72:in `buildDynamicString'
from org.jruby.ast.DStrNode:64:in `interpret'
from org.jruby.ast.CallOneArgNode:57:in `interpret'
from org.jruby.ast.IfNode:108:in `interpret'
from org.jruby.ast.NewlineNode:100:in `interpret'
from org.jruby.ast.BlockNode:67:in `interpret'
from org.jruby.runtime.InterpretedBlock:202:in `evalBlockBody'
from org.jruby.runtime.InterpretedBlock:153:in `yield'
from org.jruby.runtime.Block:120:in `yield'
from org.jruby.RubyArray:1533:in `each'
from org.jruby.RubyArray$i_method_0_0$RUBYFRAMEDINVOKER$each:-1:in
`call'
from org.jruby.runtime.callsite.CachingCallSite:263:in `cacheAndCall'
from org.jruby.runtime.callsite.CachingCallSite:81:in `callBlock'
from org.jruby.runtime.callsite.CachingCallSite:86:in `call'
from org.jruby.ast.CallNoArgBlockNode:63:in `interpret'
from org.jruby.ast.NewlineNode:100:in `interpret'
from org.jruby.ast.BlockNode:67:in `interpret'
from org.jruby.internal.runtime.methods.DefaultMethod:156:in
`interpretedCall'
from org.jruby.internal.runtime.methods.DefaultMethod:133:in `call'
from org.jruby.internal.runtime.methods.DefaultMethod:288:in `call'
from org.jruby.runtime.callsite.CachingCallSite:293:in `cacheAndCall'
from org.jruby.runtime.callsite.CachingCallSite:152:in `call'
from org.jruby.ast.FCallTwoArgNode:38:in `interpret'
from org.jruby.ast.IfNode:108:in `interpret'
from org.jruby.ast.NewlineNode:100:in `interpret'
from org.jruby.ast.BlockNode:67:in `interpret'
from org.jruby.internal.runtime.methods.DefaultMethod:156:in
`interpretedCall'
from org.jruby.internal.runtime.methods.DefaultMethod:133:in `call'
from org.jruby.internal.runtime.methods.DefaultMethod:183:in `call'
from org.jruby.runtime.callsite.CachingCallSite:243:in `cacheAndCall'
from org.jruby.runtime.callsite.CachingCallSite:32:in `call'
from org.jruby.ast.FCallManyArgsNode:60:in `interpret'
from org.jruby.ast.NewlineNode:100:in `interpret'
from org.jruby.ast.BlockNode:67:in `interpret'
from org.jruby.internal.runtime.methods.DefaultMethod:156:in
`interpretedCall'
from org.jruby.internal.runtime.methods.DefaultMethod:133:in `call'
from org.jruby.internal.runtime.methods.DefaultMethod:204:in `call'
from org.jruby.runtime.callsite.CachingCallSite:253:in `cacheAndCall'
from org.jruby.runtime.callsite.CachingCallSite:72:in `call'
from org.jruby.ast.CallNoArgNode:61:in `interpret'
from org.jruby.ast.NewlineNode:100:in `interpret'
from org.jruby.ast.BlockNode:67:in `interpret'
from org.jruby.ast.IfNode:110:in `interpret'
from org.jruby.ast.NewlineNode:100:in `interpret'
from org.jruby.ast.BlockNode:67:in `interpret'
from org.jruby.ast.BeginNode:79:in `interpret'
from org.jruby.ast.InstAsgnNode:87:in `interpret'
from org.jruby.ast.OpAsgnOrNode:101:in `interpret'
from org.jruby.ast.NewlineNode:100:in `interpret'
from org.jruby.internal.runtime.methods.DefaultMethod:156:in
`interpretedCall'
from org.jruby.internal.runtime.methods.DefaultMethod:133:in `call'
from org.jruby.internal.runtime.methods.DefaultMethod:204:in `call'
from org.jruby.runtime.callsite.CachingCallSite:253:in `cacheAndCall'
from org.jruby.runtime.callsite.CachingCallSite:72:in `call'
from org.jruby.ast.VCallNode:81:in `interpret'
from org.jruby.ast.CallSpecialArgBlockNode:52:in `interpret'
from org.jruby.ast.NewlineNode:100:in `interpret'
from org.jruby.ast.BlockNode:67:in `interpret'
from org.jruby.internal.runtime.methods.DefaultMethod:156:in
`interpretedCall'
from org.jruby.internal.runtime.methods.DefaultMethod:133:in `call'
from org.jruby.internal.runtime.methods.DefaultMethod:225:in `call'
from org.jruby.runtime.callsite.CachingCallSite:263:in `cacheAndCall'
from org.jruby.runtime.callsite.CachingCallSite:81:in `callBlock'
from org.jruby.runtime.callsite.CachingCallSite:86:in `call'
from org.jruby.ast.FCallNoArgBlockPassNode:26:in `interpret'
from org.jruby.ast.NewlineNode:100:in `interpret'
from org.jruby.internal.runtime.methods.DefaultMethod:156:in
`interpretedCall'
from org.jruby.internal.runtime.methods.DefaultMethod:133:in `call'
from org.jruby.internal.runtime.methods.DefaultMethod:204:in `call'
from org.jruby.runtime.callsite.CachingCallSite:253:in `cacheAndCall'
from org.jruby.runtime.callsite.CachingCallSite:72:in `call'
from org.jruby.ast.CallNoArgNode:61:in `interpret'
from org.jruby.ast.IfNode:110:in `interpret'
from org.jruby.ast.NewlineNode:100:in `interpret'
from org.jruby.ast.BlockNode:67:in `interpret'
from org.jruby.internal.runtime.methods.DefaultMethod:156:in
`interpretedCall'
from org.jruby.internal.runtime.methods.DefaultMethod:133:in `call'
from org.jruby.internal.runtime.methods.DefaultMethod:204:in `call'
from org.jruby.runtime.callsite.CachingCallSite:253:in `cacheAndCall'
from org.jruby.runtime.callsite.CachingCallSite:72:in `call'
from ar_to_xml:31:in `__file__'
from ar_to_xml:-1:in `load'
from org.jruby.Ruby:573:in `runScript'
from org.jruby.Ruby:476:in `runNormally'
from org.jruby.Ruby:350:in `runFromMain'
from org.jruby.Main:214:in `run'
from org.jruby.Main:100:in `run'
from org.jruby.Main:84:in `main'
{code}
The crash happens in when executing line 154 of activerecord's xml_serializer.rb
starting at line 153
{code}
def to_xml(options = {}, &block)
serializer = XmlSerializer.new(self, options)
block_given? ? serializer.to_s(&block) : serializer.to_s
end
{code}
The debugger actually ends up displaying line 7 of activerecord's
serialization.rb
{code}
def initialize(record, options = {})
@record, @options = record, options.dup
end
{code}
If you have the latest ruby-debug gems you can run this test from the shell and
attach a remote debugger from a version 7 instance of NetBeans.
see: http://blogs.sun.com/martink/entry/remote_debugging_debug_whatever_ruby
{code}
jruby --debug -S rdebug-ide -p 7000 --stop -- ar_to_xml.rb
{code}
The debugger exits with this statement on the console:
{{Exception in DebugThread loop: undefined method `[]' for nil:NilClass}}
I have these versions of ruby-debugger installed:
ruby-debug (0.10.3)
ruby-debug-base (0.10.3.1)
ruby-debug-ide (0.4.3)
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