On Wed, 14 May 2025 18:54:49 GMT, Chris Plummer <cjplum...@openjdk.org> wrote:

> Based on the log output, the test failure seems to be the result of two 
> threads trying to set and access variables that are not volatile, so I've 
> made them volatile. Since I can't reproduce the failure, I can't confirm that 
> it is now fixed, but the lack of volatile is clearly a bug so should be done 
> anyway. Tested by running the test locally to make sure nothing breaks.

Changes requested by lmesnik (Reviewer).

test/hotspot/jtreg/vmTestbase/nsk/jdi/ExceptionEvent/_itself_/exevent008.java 
line 83:

> 81:     private ReferenceType rType, rTypeEx;
> 82:     private String cmd;
> 83:     private volatile int counter1 = 0, counter2 = 0;

The volatile is not enough for increment. It might be not affect test if you 
check 0/non-0 only but still not a good way.
Better to use AtomicInteger or set/read variable only.

-------------

PR Review: https://git.openjdk.org/jdk/pull/25236#pullrequestreview-2879186245
PR Review Comment: https://git.openjdk.org/jdk/pull/25236#discussion_r2114495149

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