methodSignature.getParameterNames() is null in Spring Boot 3.2 when Running with Intellij IDEA

[gykk16]

When running a Spring Boot 3.2.0 project in intellij (with Settings > Build, Execution, Deployment > Build tools > Gradle : Build and run with Intellij IDEA) it cannot read method signature from JoinPoint

issue only happens in spring boot 3.2.0 (3.1.5 works fine)
also using 3.2.0 and "Build and run with Gradle" settings works fine

java.lang.NullPointerException: Cannot read the array length because "parameterNames" is null
	at com.example.demo.aop.MyAspect.checkEventIp(MyAspect.java:21) ~[classes/:na]
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) ~[na:na]
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
	at java.base/java.lang.reflect.Method.invoke(Method.java:568) ~[na:na]
	at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethodWithGivenArgs(AbstractAspectJAdvice.java:637) ~[spring-aop-6.1.1.jar:6.1.1]
	at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethod(AbstractAspectJAdvice.java:627) ~[spring-aop-6.1.1.jar:6.1.1]
	at org.springframework.aop.aspectj.AspectJAroundAdvice.invoke(AspectJAroundAdvice.java:71) ~[spring-aop-6.1.1.jar:6.1.1]
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:173) ~[spring-aop-6.1.1.jar:6.1.1]
	at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:765) ~[spring-aop-6.1.1.jar:6.1.1]
	at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:97) ~[spring-aop-6.1.1.jar:6.1.1]
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:184) ~[spring-aop-6.1.1.jar:6.1.1]
	at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:765) ~[spring-aop-6.1.1.jar:6.1.1]
	at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:717) ~[spring-aop-6.1.1.jar:6.1.1]
	at com.example.demo.TestService$$SpringCGLIB$$0.hello(<generated>) ~[classes/:na]

[bclozel]

I think this is due to https://github.com/spring-projects/spring-boot/wiki/Spring-Boot-3.2-Release-Notes#parameter-name-discovery

You should have gotten WARN logs with Spring Boot 3.1.x about this. Please compile your code with the -parameters compiler option. See also spring-projects/spring-framework#31675

[benestr]

Does anyone know why does might only happen in some rare cases?
We had getParameterNames return null once after an app restart in production, and only for one of several methods where we call getParameterNames.

While this does fit the description of a missing -parameters option, I wonder why it does not happen every time and we can not reproduce it.

[gykk16]

when using intellij with Build and run with Intellij IDEA option i had to delete the out folder generated by intellij