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Enumerator containing range does not pass a block variable #2632

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hiukkanen opened this issue Feb 28, 2015 · 3 comments
Closed

Enumerator containing range does not pass a block variable #2632

hiukkanen opened this issue Feb 28, 2015 · 3 comments
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core JRuby 1.7.x JRuby 9000
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JRuby 1.7.20

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@hiukkanen
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(1..1).each &method(:puts)

# cruby => 1
# jruby =>
@headius
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headius commented Mar 12, 2015

Looks like it's not turning it into a proc that receives one argument, and it's just putsing the newline.

@headius
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headius commented Mar 12, 2015

A test with an intermediate method shows it's passing nil out for some reason. Going to debug.

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headius commented Mar 12, 2015

So the problem was an optimization we made to Range#each many years ago, where it checks if the target block actually wants arguments before it creates and passes them. However the logic for turning a method into a proc was always setting up that proc to report that it takes no block arguments.

Fix coming for 1.7 and 9k.

@headius headius added this to the JRuby 1.7.20 milestone Mar 12, 2015
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