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$! gets unset by rescue, even when the rescue doesn't catch the error #3237

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iconara opened this issue Aug 8, 2015 · 1 comment
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$! gets unset by rescue, even when the rescue doesn't catch the error #3237

iconara opened this issue Aug 8, 2015 · 1 comment

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@iconara
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@iconara iconara commented Aug 8, 2015

This code will print "#<RuntimeError: bork>" in JRuby 1.7.x as well as all MRI versions I tested, but "nil" in JRuby 9.0.0.0:

begin
  begin
    raise 'bork'
  rescue TypeError
  end
ensure
  p $!
end

Removing the inner begin … rescue makes it print "#<RuntimeError: bork>" again. It looks like rescue clears $!. The error matched by the inner rescue doesn't matter, and catching the error and re-raising it also leaves $! unset.

iconara added a commit to iconara/ione that referenced this issue Aug 8, 2015
iconara added a commit to iconara/ione that referenced this issue Aug 8, 2015
@enebo enebo added this to the JRuby 9.0.1.0 milestone Aug 18, 2015
@subbuss subbuss closed this in 80f6a36 Aug 19, 2015
@enebo
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@enebo enebo commented Aug 19, 2015

Perly

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