JDK-8204963 : javax.swing.border.TitledBorder has a memory leak
  • Type: Bug
  • Component: client-libs
  • Sub-Component: javax.swing
  • Affected Version: 9,10,11
  • Priority: P3
  • Status: Resolved
  • Resolution: Fixed
  • OS: linux
  • CPU: x86_64
  • Submitted: 2018-06-12
  • Updated: 2020-09-18
  • Resolved: 2018-08-09
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JDK 11 JDK 12
11.0.10-oracleFixed 12 b14Fixed
Related Reports
Relates :  
Description
ADDITIONAL SYSTEM INFORMATION :
Pure Java bug - any instance of JDK 10.0.1

A DESCRIPTION OF THE PROBLEM :
The method javax.swing.border.TitledBorder.installPropertyChangeListeners() makes an anonymous listener object with a weak reference to TitledBorder. However, this logic is flawed as the listener object contains a hard reference (this$0) to the TitledBorder object, so the TitledBorder instance is never freed.

I actually see leaks in my application due to this. Screenshot: https://botcompany.de/1004590/raw/1101318


FREQUENCY : always



Comments
We are already in rampdown for July 2020. I don't see the urgency now as this bug was present in OpenJDK 11 from the get-go. Getting this into 11.0.9 seems fine.
04-06-2020

Fix request (11u): I'd like to add it to 11u as well. The patch applies cleanly. There's a problem with the test -- it doesn't work on my machine, see JDK-8213531 -- I've added another, someway simpler one, not headful etc. but it is not a fix to JDK-8213531 and perhaps should be sent to the current JDK -- or not necessary? Also, if possible, could I have it in July, 2020 release?
01-06-2020

As per description, javax.swing.border.TitledBorder has a memory leak with JDK versions 9 and onward. "The method javax.swing.border.TitledBorder.installPropertyChangeListeners() makes an anonymous listener object with a weak reference to TitledBorder. However, this logic is flawed as the listener object contains a hard reference (this$0) to the TitledBorder object, so the TitledBorder instance is never freed." When checked this for reported JDK version, could confirm the results. This seems a regression in JDK 9. Results: ======== 8u172: OK 9: Fail 10.0.1: Fail 11 ea b17: Fail To verify run the attached test case with respective JDK version. When run with JDK 11 ea b17 received below, Exception: java.lang.OutOfMemoryError thrown from the UncaughtExceptionHandler in thread "main"
13-06-2018