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spring-boot/spring-boot-project/spring-boot
Phillip Webb 0ce3e7ec6b Protect against NPE caused by recursive calls
Update `SpringBootConfigurationFactory` so that it no longer attempts
to get a `LoggingSystem`.

The recent `LoggingSystem` update means makes use of the
`SpringFactoriesLoader` class to load candidate logging systems.
Unfortunately, the `SpringFactoriesLoader` class creates a `Logger`
which (when using Log4J2) causes `SpringBootConfigurationFactory` to
run. Calling `LoggingSystem.get` from `SpringBootConfigurationFactory`
results in a recursive call to `SpringFactoriesLoader` which hasn't
yet been fully initialized. We then see an NPE caused by a `null`
`cache`.

This update removes the call to `LoggingSystem.get` with the assumption
that it would never return `null` anyway.

Fixes gh-24163
4 years ago
..
src Protect against NPE caused by recursive calls 4 years ago
build.gradle Add support for Oracle UCP 4 years ago