dead handle with mongoid about truffleruby HOT 8 OPEN

class Foo
  include(Mongoid::Document)

  field(:bar, type: Array)
end

foo = Foo.create!
foo.set(bar: [DateTime.now]) # works
foo.set(bar: foo.bar + [DateTime.now]) # works
foo.set(bar: (foo.bar << DateTime.now)) # throws

Cannot invoke "org.truffleruby.cext.ValueWrapperManager$ValueWrapperWeakReferenc
e.get()" because "this.wrappers[offset]" is null (java.lang.NullPointerException
)
        from org.truffleruby.cext.ValueWrapperManager$HandleBlock.getWrapper(Val
ueWrapperManager.java:234)
        from org.truffleruby.cext.ValueWrapperManager.getWrapperFromHandleMap(Va
lueWrapperManager.java:109)
        from org.truffleruby.cext.UnwrapNode$UnwrapNativeNode.unwrapTaggedObject
(UnwrapNode.java:89)
        from org.truffleruby.cext.UnwrapNodeGen$UnwrapNativeNodeGen$Inlined.exec
uteAndSpecialize(UnwrapNodeGen.java:421)
        from org.truffleruby.cext.UnwrapNodeGen$UnwrapNativeNodeGen$Inlined.exec
ute(UnwrapNodeGen.java:387)
        from org.truffleruby.cext.UnwrapNode.longToWrapper(UnwrapNode.java:270)
        from org.truffleruby.cext.UnwrapNodeGen$Inlined.executeAndSpecialize(Unw
rapNodeGen.java:183)
        from org.truffleruby.cext.UnwrapNodeGen$Inlined.execute(UnwrapNodeGen.ja
va:158)
        from org.truffleruby.core.array.library.NativeArrayStorage.read(NativeAr
rayStorage.java:98)
        from org.truffleruby.core.array.library.NativeArrayStorageGen$ArrayStore
LibraryExports$Cached.read(NativeArrayStorageGen.java:249)
        from org.truffleruby.core.array.ArrayEachIteratorNode.iterateMany(ArrayE
achIteratorNode.java:66)
        from org.truffleruby.core.array.ArrayEachIteratorNodeGen$Inlined.execute
AndSpecialize(ArrayEachIteratorNodeGen.java:497)
        from org.truffleruby.core.array.ArrayEachIteratorNodeGen$Inlined.execute
(ArrayEachIteratorNodeGen.java:447)
        from org.truffleruby.core.array.ArrayNodes$MapNode.map(ArrayNodes.java:1
455)
        from org.truffleruby.core.array.ArrayNodesFactory$MapNodeFactory$MapNode
Gen.executeAndSpecialize(ArrayNodesFactory.java:10161)
        from org.truffleruby.core.array.ArrayNodesFactory$MapNodeFactory$MapNode
Gen.execute(ArrayNodesFactory.java:10150)
        from org.truffleruby.builtins.EnumeratorSizeNode.execute(EnumeratorSizeN
ode.java:56)
        from org.truffleruby.language.RubyCoreMethodRootNode.execute(RubyCoreMet
hodRootNode.java:58)
/usr/local/bundle/gems/mongoid-8.1.5/lib/mongoid/extensions/array.rb:152:in `map
'
        from /usr/local/bundle/gems/mongoid-8.1.5/lib/mongoid/extensions/array.r
b:152:in `mongoize'
        from /usr/local/lib/mri/forwardable.rb:240:in `mongoize'
        from /usr/local/bundle/gems/mongoid-8.1.5/lib/mongoid/attributes.rb:285:
in `typed_value_for'
        from /usr/local/bundle/gems/mongoid-8.1.5/lib/mongoid/attributes.rb:175:
in `block in write_attribute'
        from /usr/local/bundle/gems/mongoid-8.1.5/lib/mongoid/threaded/lifecycle
.rb:30:in `_assigning'
        from /usr/local/bundle/gems/mongoid-8.1.5/lib/mongoid/attributes.rb:172:
in `write_attribute'
        from /usr/local/bundle/gems/mongoid-8.1.5/lib/mongoid/fields.rb:691:in `
bar='
        from /usr/local/bundle/gems/mongoid-8.1.5/lib/mongoid/attributes/process
ing.rb:122:in `process_attribute'
        from /usr/local/bundle/gems/mongoid-8.1.5/lib/mongoid/persistable/settab
le.rb:82:in `block (2 levels) in set'
        from /usr/local/bundle/gems/mongoid-8.1.5/lib/mongoid/persistable.rb:208
:in `block in process_atomic_operations'
        from /usr/local/bundle/gems/mongoid-8.1.5/lib/mongoid/persistable.rb:206
:in `each'
        from /usr/local/bundle/gems/mongoid-8.1.5/lib/mongoid/persistable.rb:206
:in `process_atomic_operations'
        from /usr/local/bundle/gems/mongoid-8.1.5/lib/mongoid/persistable/settab
le.rb:49:in `block in set'
        from /usr/local/bundle/gems/mongoid-8.1.5/lib/mongoid/persistable.rb:186
:in `prepare_atomic_operation'
        from /usr/local/bundle/gems/mongoid-8.1.5/lib/mongoid/persistable/settab
le.rb:48:in `set'
        from (irb):10:in `<top (required)>'
        from /usr/local/lib/mri/irb/workspace.rb:119:in `evaluate'
        from /usr/local/lib/mri/irb/context.rb:502:in `evaluate'
        from /usr/local/lib/mri/irb.rb:588:in `block (2 levels) in eval_input'
        from /usr/local/lib/mri/irb.rb:777:in `signal_status'
        from /usr/local/lib/mri/irb.rb:567:in `block in eval_input'
        from /usr/local/lib/mri/irb/ruby-lex.rb:267:in `block (2 levels) in each
_top_level_statement'
        from <internal:core> core/kernel.rb:409:in `loop'
        from /usr/local/lib/mri/irb/ruby-lex.rb:249:in `block in each_top_level_
statement'
        from <internal:core> core/throw_catch.rb:36:in `catch'
        from /usr/local/lib/mri/irb/ruby-lex.rb:248:in `each_top_level_statement
'
        from /usr/local/lib/mri/irb.rb:566:in `eval_input'
        from /usr/local/lib/mri/irb.rb:500:in `block in run'
        from <internal:core> core/throw_catch.rb:36:in `catch'
        from /usr/local/lib/mri/irb.rb:499:in `run'
        from /usr/local/lib/mri/irb.rb:421:in `start'
        from /usr/local/bundle/gems/railties-6.1.7.7/lib/rails/commands/console/
console_command.rb:70:in `start'
        from /usr/local/bundle/gems/railties-6.1.7.7/lib/rails/commands/console/
console_command.rb:19:in `start'
        from /usr/local/bundle/gems/railties-6.1.7.7/lib/rails/commands/console/
console_command.rb:102:in `perform'
        from /usr/local/bundle/gems/thor-1.3.1/lib/thor/command.rb:28:in `run'
        from /usr/local/bundle/gems/thor-1.3.1/lib/thor/invocation.rb:127:in `in
voke_command'
        from /usr/local/bundle/gems/thor-1.3.1/lib/thor.rb:527:in `dispatch'
        from /usr/local/bundle/gems/railties-6.1.7.7/lib/rails/command/base.rb:6
9:in `perform'
        from /usr/local/bundle/gems/railties-6.1.7.7/lib/rails/command.rb:48:in
`invoke'
        from /usr/local/bundle/gems/railties-6.1.7.7/lib/rails/commands.rb:18:in
 `<top (required)>'
        from <internal:core> core/kernel.rb:229:in `gem_original_require'
        from <internal:/usr/local/lib/mri/rubygems/core_ext/kernel_require.rb>:3
7:in `require'
        from /workspace/bin/rails:4:in `<main>'