Integrated: 8280743: HSDB "Monitor Cache Dump" command might throw NPE

Wed Aug 23 19:15:36 UTC 2023

On Mon, 21 Aug 2023 19:54:59 GMT, Chris Plummer <cjplummer at openjdk.org> wrote:

> ObjectMonitor.object() can be null so we need to defend against it. This bug was discovered by code inspection while working on [JDK-8280555](https://bugs.openjdk.org/browse/JDK-8280555).  We have no test for this, and I'm not sure how to reproduce this with HSDB like the [JDK-8280555](https://bugs.openjdk.org/browse/JDK-8280555) test did.  I did at least verify that the HSDB "Monitor Cache Dump" feature still works after this fix, although none of the monitors had a null object.

This pull request has now been integrated.

Changeset: 2c60cadf
Author:    Chris Plummer <cjplummer at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/2c60cadfde61363d1f5aefdcf138e039a461c914
Stats:     7 lines in 1 file changed: 4 ins; 0 del; 3 mod

8280743: HSDB "Monitor Cache Dump" command might throw NPE

Reviewed-by: kevinw, sspitsyn

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PR: https://git.openjdk.org/jdk/pull/15369