Bug of null analysis on record class

[ravenadesk]

I observed an unexpected behavior of null analysis on record class.

Phenomenon

null analysis is not reporting correctly for record class. The value in @Target of org.springframework.lang.NonNull are {ElementType.METHOD, ElementType.PARAMETER, ElementType.FIELD}, but the annotation seems not correctly propagating to the accessor of record class. As a comparison I also defined a equivalent class, and the null analysis works fine.

Details:

Expected behavior

According to JEP 395, when set to the record component, the NonNull should be treated as applied to the accessor of record class.

If an annotation on a record component is applicable to a method declaration, then the annotation appears on the corresponding accessor method.

Env

Windows 10 22H2 VsCode 1.96.4 Amazon Corretto 21 21.0.6_7 Extension Pack for Java 0.29.0 Language Support for Java(TM) by Red Hat 1.39.0

Source code:

• InfoRecord.java

package com.example.demo;

import org.springframework.lang.NonNull;
import org.springframework.lang.Nullable;

public record InfoRecord(
    @NonNull
    String title,
    @Nullable
    String detail
) {
    
}

• InfoClass.java

package com.example.demo;

import org.springframework.lang.NonNull;
import org.springframework.lang.Nullable;

public class InfoClass {
    @NonNull
    private String title;
    
    @Nullable
    private String detail;

    public InfoClass(@NonNull String title, @Nullable String detail) {
        this.title = title;
        this.detail = detail;
    }

    public @NonNull String getTitle() {
        return title;
    }

    public @Nullable String getDetail() {
        return detail;
    }

    public void setTitle(@NonNull String title) {
        this.title = title;
    }

    public void setDetail(@Nullable String detail) {
        this.detail = detail;
    }

    
}