rschmitt opened a new issue, #3836: URL: https://github.com/apache/logging-log4j2/issues/3836
## Description A bad Log4j2 properties file will cause an exception to be thrown from `PropertiesConfigurationBuilder`, whereas previous versions would fall back to the default logging configuration. This is most likely to be encountered when a Log4j 1.2 properties file is named `log4j2.properties` or explicitly passed in using `-Dlog4j.configurationFile` instead of `-Dlog4j.configuration`, but it can also happen if the properties file is just plain malformed in a way that was tolerated in the past. ## Configuration **Version:** 2.25.0 and 2.25.1 **Operating system:** macOS Sequoia 15.5 **JDK:** Corretto 17.0.16 _inter alia_ ## Logs ``` [0] ~/src/logging-log4j2 # ./run.sh Darwin 842f57b044d8 24.5.0 Darwin Kernel Version 24.5.0: Tue Apr 22 19:53:27 PDT 2025; root:xnu-11417.121.6~2/RELEASE_ARM64_T6041 arm64 Testing 2.24.3 with bad Log4j 1.2 properties config: Testing 2.24.3 with bad Log4j 2.x properties config: 14:21:45.189 [main] ERROR org.example.App - error level message Testing 2.24.3 with wrong properties config version: 14:21:45.742 [main] ERROR org.example.App - error level message Testing 2.25.1 with bad Log4j 1.2 properties config: Testing 2.25.1 with bad Log4j 2.x properties config: class org.apache.logging.log4j.core.config.ConfigurationException: No type attribute provided for component * Testing 2.25.1 with wrong properties config version: class org.apache.logging.log4j.core.config.ConfigurationException: No type attribute provided for component log4j ``` ## Reproduction Run `./run.sh`: https://github.com/rschmitt/logging-log4j2/tree/bad-config-eiie-repro -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: notifications-unsubscr...@logging.apache.org.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
