NullPointerException when calling any method on Fiber.current if not explicitly
in a created Fiber
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Key: JRUBY-5842
URL: http://jira.codehaus.org/browse/JRUBY-5842
Project: JRuby
Issue Type: Bug
Components: Core Classes/Modules
Affects Versions: JRuby 1.6.2
Environment: Snow leopard 10.6.7 on a 2011 Macbook Pro
Reporter: Daniel Azuma
I created the following "test.rb":
require 'fiber'
::Fiber.current.object_id
Executing jruby --1.9 test.rb results in:
CachingCallSite.java:388:in `pollAndGetClass': java.lang.NullPointerException
from CachingCallSite.java:100:in `call'
from test.rb:2:in `__file__'
from test.rb:-1:in `load'
from Ruby.java:671:in `runScript'
from Ruby.java:575:in `runNormally'
from Ruby.java:424:in `runFromMain'
from Main.java:278:in `doRunFromMain'
from Main.java:198:in `internalRun'
from Main.java:164:in `run'
from Main.java:148:in `run'
from Main.java:128:in `main'
Note: this seems to happen only if not actually in a fiber block. Also, merely
calling Fiber.current does not trigger the NPE. Only when you call a method
(any method, it seems) on the resulting object do you get the NPE.
MRI seems to have a valid "global fiber" that gets returned when you call
Fiber.current outside a fiber block.
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