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[Truffle] Argument values assigned to local variables not available in block #2999

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nirvdrum opened this issue May 28, 2015 · 2 comments
Closed

[Truffle] Argument values assigned to local variables not available in block #2999

nirvdrum opened this issue May 28, 2015 · 2 comments
Milestone
Non-Release

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@nirvdrum
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Argument values assigned to local variables aren't available from blocks supplied to a method call. The following is a simplified example of something RSpec does:

def x(the_caller)
  yield
end

class X
  def y
    x(the_caller = caller) do
      p the_caller.first
    end
  end
end

X.new.y

MRI 2.2.2:

> ruby -v yo.rb 
ruby 2.2.2p95 (2015-04-13 revision 50295) [x86_64-linux]
"yo.rb:13:in `<main>'"

JRuby+Truffle:

> bin/jruby -X+T -v yo.rb 
jruby 9.0.0.0-SNAPSHOT (2.2.2) 2015-05-28 6ab4b4a Java HotSpot(TM) 64-Bit Server VM 25.45-b02 on 1.8.0_45-b14 +jit [linux-amd64]
yo.rb:8:in `method_missing': undefined method `first' for NilClass (NoMethodError)
    from yo.rb:8:in `block in y'
    from yo.rb:2:in `x'
    from yo.rb:7:in `y'
    from yo.rb:13:in `<main>'
@eregon
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eregon commented May 28, 2015

This is not a default argument but just an argument saved in a local variable, right?

@nirvdrum
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You're right. I was tracking something else down and incorrectly reported that here. I'll update the title.

@nirvdrum nirvdrum changed the title [Truffle] Default argument values not available in block [Truffle] Argument values assigned to local variables not available in block May 28, 2015
@nirvdrum nirvdrum added this to the truffle-dev milestone May 29, 2015
@enebo enebo added this to the Non-Release milestone Dec 7, 2017
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@nirvdrum @enebo @eregon @chrisseaton