JRuby

Literal unary minus bignum/fixnum boundary lack of symmetry

Details

  • Type: Bug Bug
  • Status: Closed Closed
  • Priority: Major Major
  • Resolution: Fixed
  • Affects Version/s: JRuby 1.5.2
  • Fix Version/s: JRuby 1.6RC1
  • Component/s: Parser
  • Labels:
    None
  • Number of attachments :
    0

Description

The following script should alternate between being a Fixnum and a Bignum since the negated value will fit into a Fixnum when negative but need to be promoted to a Bignum for the positive value. MRI also behaves this like, but with a lower value since we use a long for our Fixnums:

./bin/jruby -e 'p (9223372036854775808).class, (-9223372036854775808).class, (--9223372036854775808).class, (---9223372036854775808).class'

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Thomas E Enebo added a comment -

Most obscure bug eva. Fixed in commit 4311721e1db42ae3c6cec07a4061a8c9e68a9f52 on master.

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Thomas E Enebo added a comment - Most obscure bug eva. Fixed in commit 4311721e1db42ae3c6cec07a4061a8c9e68a9f52 on master.

People

  • Assignee:
    Thomas E Enebo
    Reporter:
    Thomas E Enebo
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Dates

  • Created:
    Updated:
    Resolved: