0005487: issue 5239 is not fixed .ArrayIndexOutOfBoundsException

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Severity

Reproducibility

Date Submitted

Last Update

0005487

[Hessian]

block

always

07-11-13 00:29

07-11-13 00:55

Reporter

sander

View Status

public

Assigned To

Priority

normal

Resolution

open

Status

new

Product Version

4.0.7

Summary

0005487: issue 5239 is not fixed .ArrayIndexOutOfBoundsException

Description

issue 5239 is not fixed

int hash = System.identityHashCode(key) % prime;

can return negative integers
1. because ibm sdk 1.6 AIX can give negative identityHashCode
2. because java returns negative modulo result for negative first operand

addition:
if (hash < 0) {
hash += prime;
}
guarantees >=0 integers (and maintains modulo)

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Notes
(0006285) sander 07-11-13 00:55	geez I missed 0005385... but this is not minor to us and Math.abs is likely to yield hash collisions reducing efficiency

Issue History
Date Modified	Username	Field	Change
07-11-13 00:29	sander	New Issue
07-11-13 00:55	sander	Note Added: 0006285

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