yielding without arguments yields java null and causes NPE
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Key: JRUBY-1305
URL: http://jira.codehaus.org/browse/JRUBY-1305
Project: JRuby
Issue Type: Bug
Components: Interpreter
Reporter: Marcin Mielżyński
This simple test case causes NPE:
def baz
yield
end
baz{|e|p e.class}
The block got null, so calling the 'class' method on it will cause NPE.
MRI always operates on Qnil value, so it will print NilClass.
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