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https://issues.apache.org/jira/browse/LOG4J2-1409?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Remko Popma updated LOG4J2-1409:
--------------------------------
Description:
A specific set of parameterised logging messages produces an Array Index Out of
Bounds exception. It occurs due to the params array (initially set to 10) being
reset to a lower number due to a lambda function passed in as an parameter.
Then the subsequent logging messages don't reset this number.
Best to explain in an example:
{code}
static Logger logger = LogManager.getLogger();
public static void main(String[] args) {
logger.info("Hello {} {} {}", 1, 2,3);
logger.info("Hello {}", () -> "World");
logger.info("Hello {}", 1);
// Uncomment out this log event and the params gets reset correctly
// No exception occurs
// logger.info("Hello {}", 1);
// Exception at this log event - as the params is set to 1!
logger.info("Hello {} {} {}", 1, 2,3);
}
{code}
Work around for this is not to use the ReusableParameterizedMessage. Instead to
specify the legacy Message Factory of ParameterizedMessageFactory as a property
of the program and no exception occurs.
was:
A specific set of parameterised logging messages produces an Array Index Out of
Bounds exception. It occurs due to the params array (initially set to 10) being
reset to a lower number due to a lambda function passed in as an parameter.
Then the subsequent logging messages don't reset this number.
Best to explain in an example:
static Logger logger = LogManager.getLogger();
public static void main(String[] args) {
logger.info("Hello {} {} {}", 1, 2,3);
logger.info("Hello {}", () -> "World");
logger.info("Hello {}", 1);
// Uncomment out this log event and the params gets reset correctly
// No exception occurs
// logger.info("Hello {}", 1);
// Exception at this log event - as the params is set to 1!
logger.info("Hello {} {} {}", 1, 2,3);
}
Work around for this is not to use the ReusableParameterizedMessage. Instead to
specify the legacy Message Factory of ParameterizedMessageFactory as a property
of the program and no exception occurs.
Thanks for reporting this! Looking into it.
> ArrayIndexOutOfBoundsException in ReusableParameterizedMessage
> ---------------------------------------------------------------
>
> Key: LOG4J2-1409
> URL: https://issues.apache.org/jira/browse/LOG4J2-1409
> Project: Log4j 2
> Issue Type: Bug
> Components: API, Core
> Affects Versions: 2.6
> Reporter: Shahan
> Assignee: Remko Popma
> Priority: Critical
>
> A specific set of parameterised logging messages produces an Array Index Out
> of Bounds exception. It occurs due to the params array (initially set to 10)
> being reset to a lower number due to a lambda function passed in as an
> parameter. Then the subsequent logging messages don't reset this number.
> Best to explain in an example:
> {code}
> static Logger logger = LogManager.getLogger();
> public static void main(String[] args) {
> logger.info("Hello {} {} {}", 1, 2,3);
> logger.info("Hello {}", () -> "World");
> logger.info("Hello {}", 1);
>
> // Uncomment out this log event and the params gets reset correctly
> // No exception occurs
> // logger.info("Hello {}", 1);
> // Exception at this log event - as the params is set to 1!
> logger.info("Hello {} {} {}", 1, 2,3);
> }
> {code}
> Work around for this is not to use the ReusableParameterizedMessage. Instead
> to specify the legacy Message Factory of ParameterizedMessageFactory as a
> property of the program and no exception occurs.
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