JDK-7042126 : (alt-rt) HashMap.clone implementation should be re-examined
- Type: Bug
- Component: core-libs
- Sub-Component: java.util:collections
- Affected Version: 7
- Priority: P4
- Status: Resolved
- Resolution: Fixed
- OS: linux
- CPU: x86
- Submitted: 2011-05-05
- Updated: 2013-08-15
- Resolved: 2013-01-29
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Resolved: Release in which this issue/RFE has been resolved.
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| JDK 7 | JDK 8 |
|---|---|
7u40 b12Fixed  |
8Fixed |
Description
FULL PRODUCT VERSION : java version "1.6.0_24" Java(TM) SE Runtime Environment (build 1.6.0_24-b07) Java HotSpot(TM) 64-Bit Server VM (build 19.1-b02, mixed mode) ADDITIONAL OS VERSION INFORMATION : Linux local 2.6.18-194.26.1.el5 #1 SMP Fri Oct 29 14:21:16 EDT 2010 x86_64 x86_64 x86_64 GNU/Linux A DESCRIPTION OF THE PROBLEM : When AggressiveOpts is enabled, the altclass version of HashMap#clone has a memory leak issue. Cloned copies of will retain a reference to their "parent" and so the original HashMap will remain live for the life of the cloned copy. REPRODUCIBILITY : This bug can be reproduced always. CUSTOMER SUBMITTED WORKAROUND : Do not use HashMap#clone() in conjunction with -XX:+AggressiveOpts.