[BUG] Errorprone compatibility with Lombok JavaDoc checks on JDK 25

Describe the bug
With JDK 25 EA, Lombok 1.18.40 and ErrorProne, ErrorProne's JavaDoc-related checks fail with Lombok-generated code with errors like

[javac]           error-prone version: 2.36.0
[javac]           BugPattern: (see stack trace)
[javac]           Stack Trace:
[javac]           java.lang.AbstractMethodError: Receiver class lombok.javac.Javac$JavadocOps_8$1 does not define or inherit an implementation of the resolved method 'abstract com.sun.tools.javac.parser.Tokens$Comment stripIndent()' of interface com.sun.tools.javac.parser.Tokens$Comment.
[javac]            at jdk.compiler/com.sun.tools.javac.parser.DocCommentParser.<init>(DocCommentParser.java:168)
[javac]            at jdk.compiler/com.sun.tools.javac.parser.DocCommentParser.<init>(DocCommentParser.java:146)
[javac]            at jdk.compiler/com.sun.tools.javac.api.JavacTrees.getDocCommentTree(JavacTrees.java:1132)
[javac]            at jdk.compiler/com.sun.tools.javac.parser.LazyDocCommentTable.getCommentTree(LazyDocCommentTable.java:101)
[javac]            at jdk.compiler/com.sun.tools.javac.api.JavacTrees.getDocCommentTree(JavacTrees.java:757)
[javac]            at com.google.errorprone.bugpatterns.javadoc.Utils.getDocCommentTree(Utils.java:132)
[javac]            at com.google.errorprone.bugpatterns.javadoc.Utils.getDocTreePath(Utils.java:124)
[javac]            at com.google.errorprone.bugpatterns.javadoc.InvalidBlockTag.matchVariable(InvalidBlockTag.java:93)

I'm uncertain if this should be filed as an issue against Lombok, ErrorProne, or just considered an unfortunate incompatibility.

I've observed this with the following ErrorProne checks:

AlmostJavadoc
EscapedEntity
InheritDoc
InvalidBlockTag
InvalidInlineTag
InvalidLink
MalformedInlineTag

To Reproduce

I haven't attempted to create a minimal reproducer. I am opening this issue first to discuss what you think of this incompatibility with ErrorProne and JDK 25 in principle. I also haven't filed an issue against ErrorProne. If you think it is more appropriate to fix in ErrorProne, I can open a ticket with that project instead.

Expected behavior
Maybe the Lombok-generated JavadocOps_8 can implement abstract com.sun.tools.javac.parser.Tokens$Comment stripIndent() to prevent this issue?

Version info (please complete the following information):

Lombok version (1.18.40)
Platform JDK 25 EA

Additional context
I'm opening this issue primarily to discuss it before taking further action on it.

diff --git a/src/utils/lombok/javac/Javac.java b/src/utils/lombok/javac/Javac.java
index 08c13cc4..779a526a 100644
--- a/src/utils/lombok/javac/Javac.java
+++ b/src/utils/lombok/javac/Javac.java
@@ -387,6 +387,10 @@ public class Javac {
                                @Override public DiagnosticPosition getPos() {
                                        return field;
                                }
+
+                               public Comment stripIndent() {
+                                       return this;
+                               }
                        };
                }
        }

This appears adequate to prevent Error Prone from crashing.

@asheldon

@asheldon Thanks for the report and for a diff to fix the issue. I hope I can add a test case to catch it earlier next time.

[fixes projectlombok#3940] Add missing stripIndent method

[fixes #3940] Add missing stripIndent method

Just for the record, I'm seeing ErrorProne error out with Lombok 1.18.38 as well.

Still JDK 25 and ErrorProne 2.36.0.

Still reproduces with Lombok 1.18.42

@sergey-morenets

JDK: 25
lombok: 1.18.42
error_prone: 1.18.42

fails as before, same as @sergey-morenets mentioning

I've changed the title of this issue to capture that it was specifically about the JavaDoc-related checks with JDK25 and not a general issue about Lombok + Error prone + JDK 25 compatibility.

[SPARK-53768] Upgrade `lombok` to 1.18.42

It sounds like the next step is a simple and reliable reproduction recipe.


import java.util.Set;

import lombok.Getter;
import lombok.RequiredArgsConstructor;

@RequiredArgsConstructor
@Getter
public enum MyType {
    FOO("foo", Set.of("a", "b", "c")),
    ZOO("zoo", Set.of("a", "b", "c"));

    private final String code;

    /**
     * Set of required fields that must be present in the somewhere.
     */
    private final Set<String> requiredFields;
}

JDK: 25
lombok: 1.18.42
error_prone: 1.18.42

Issue with getter and setter with java 25.

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.14.1:compile (default-compile) on project thymeleaf-bank-application: Compilation failure: Compilation failure:
variable bankService not initialized in the default constructor

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[BUG] Errorprone compatibility with Lombok JavaDoc checks on JDK 25 #3940

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[BUG] Errorprone compatibility with Lombok JavaDoc checks on JDK 25 #3940

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asheldon commented on Sep 15, 2025

Rawi01 commented on Sep 16, 2025

tarskiandhutch commented on Sep 23, 2025

sergey-morenets commented on Sep 29, 2025

andrey-borisov-patrianna commented on Sep 30, 2025

asheldon commented on Sep 30, 2025

rzwitserloot commented on Oct 2, 2025

andrey-borisov-patrianna commented on Oct 2, 2025

Taha-Saifee53 commented on Jan 24, 2026

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