Kernel::rand() is broken for arguments larger than Integer.MAX_VALUE
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Key: JRUBY-1430
URL: http://jira.codehaus.org/browse/JRUBY-1430
Project: JRuby
Issue Type: Bug
Reporter: Dave Halliday
Assignee: Thomas E Enebo
Attachments: rand.diff
If the "max" argument passed to Kernel::rand() is greater than
Integer.MAX_VALUE then incorrect results are returned. There are two problems:
1) If the argument is less between Integer.MAX_VALUE and Long.MAX_VALUE then
negative numbers are returned half the time (result should always be positive).
2) If the argument is a Bignum then the "max" value is not enforced, only the
size of the result in bytes, which could be greater than the desired maximum.
The attached patch fixes these two problems.
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