SpringBoot Investigate how to report GraalVM system requirements

I don't know when this was introduced but compiling an image with GraalVM 21 lead to the following on startup:

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/

 :: Spring Boot ::             (v4.0.0-M3)

Application run failed
org.springframework.boot.AotInitializerNotFoundException: Startup with AOT mode enabled failed: AOT initializer org.springframework.cloud.task.timestamp.TaskApplication__ApplicationContextInitializer could not be found
        at org.springframework.boot.SpringApplication.addAotGeneratedInitializerIfNecessary(SpringApplication.java:428)
        at org.springframework.boot.SpringApplication.prepareContext(SpringApplication.java:384)
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:319)
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:1361)
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:1350)
        at org.springframework.cloud.task.timestamp.TaskApplication.main(TaskApplication.java:45)
        at java.base@21.0.6/java.lang.invoke.LambdaForm$DMH/sa346b79c.invokeStaticInit(LambdaForm$DMH)

The same application starts with GraalVM24. I wonder if we could investigate how to throw a more meaningful exception.

Comment From: snicoll

Chatting with @sdeleuze it is the reflection hints format that isn't understood with older GraalVM versions. We're now considering our option to fail hard as the exception above is a bit confusing.