Integrated: 8280174: Possible NPE in Thread.dispatchUncaughtException

[Andrey Turbanov]

On Mon, 17 Jan 2022 20:56:56 GMT, Andrey Turbanov <aturbanov at openjdk.org> wrote:

> Method `Thread.dispatchUncaughtException` (called by VM) uses result of of `getUncaughtExceptionHandler`. Field `uncaughtExceptionHandler` is volatile and can be changed by another Thread. Which could lead to NPE.
> https://github.com/openjdk/jdk/blob/7b6738fa02023825ed9e602555bd5ed2b87a6ca6/src/java.base/share/classes/java/lang/Thread.java#L2007-L2009
> Read field to local variable to avoid double volatile read.

This pull request has now been integrated.

Changeset: f05ff996
Author:    Andrey Turbanov <aturbanov at openjdk.org>
URL:       https://git.openjdk.java.net/jdk/commit/f05ff996543d0239383d8b363fdbba15769c4aae
Stats:     3 lines in 1 file changed: 0 ins; 0 del; 3 mod

8280174: Possible NPE in Thread.dispatchUncaughtException

Reviewed-by: alanb

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PR: https://git.openjdk.java.net/jdk/pull/7117