LocalJumpError not thrown
-------------------------
Key: JRUBY-4239
URL: http://jira.codehaus.org/browse/JRUBY-4239
Project: JRuby
Issue Type: Bug
Affects Versions: JRuby 1.4
Reporter: John Firebaugh
Assignee: Thomas E Enebo
MRI:
irb(main):001:0> return
LocalJumpError: unexpected return
from (irb):1
irb(main):002:0> [4,5,6].map {|a| return a*a}
LocalJumpError: unexpected return
from (irb):2
from (irb):2:in `map'
from (irb):2
In JRuby, both of those just exit the interpreter immediately.
This can lead to significant behavioral differences that are difficult to
diagnose.
class Test
def later(&block)
@later = block
end
def do_later
result = @later.call
puts "bar"
result
end
def test_block
later do
return "foo"
end
end
end
t = Test.new
t.test_block
puts t.do_later
In JRuby, this prints "foo" but not "bar". In MRI it raises LocalJumpError and
the problem is obvious.
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