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[BUG] Lombok visitor handler class lombok.javac.handlers.HandleVal failed: java.lang.NullPointerException #3148

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MineYuanlu opened this issue Mar 23, 2022 · 8 comments
Open

[BUG] Lombok visitor handler class lombok.javac.handlers.HandleVal failed: java.lang.NullPointerException #3148

MineYuanlu opened this issue Mar 23, 2022 · 8 comments
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@Rawi01
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accepted The issue/enhancement is valid, sensible, and explained in sufficient detail bug javac

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@MineYuanlu
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MineYuanlu commented Mar 23, 2022 •
edited

Describe the bug
NPE encountered while "mvn clean install".
like #2999 , But I'm using the latest version of Lombok

To Reproduce
I can't separate a single original file because he relies too much on other lib.
repo
File with NPE: yuan/plugins/serverDo/bungee/ConfigManager.java

I used the build of idea and the command line of "mvn install", which caused the following problems:

[INFO] Compiling 6 source files to D:\document\development\java\project\yuanluServerDo\yuanluServerDo-bungeecord\target\classes
Exception while resolving: NODE LOCAL (class com.sun.tools.javac.tree.JCTree$JCVariableDecl) @val()
final ___Lombok_VAL_Attrib__ name = e.getKey()(RegularFileObject[D:\document\development\java\project\yuanluServerDo\yuanluServerDo-bungeecord\src\main\java\yuan\plugins\serverDo\bungee\ConfigManager.java])
java.lang.NullPointerException
        at com.sun.tools.javac.comp.Check$Validator.visitTypeApply(Check.java:1259)
        at com.sun.tools.javac.tree.JCTree$JCTypeApply.accept(JCTree.java:2135)
        at com.sun.tools.javac.comp.Check$Validator.validateTree(Check.java:1359)
        at com.sun.tools.javac.comp.Check.validate(Check.java:1230)
        at com.sun.tools.javac.comp.Attr.visitVarDef(Attr.java:1055)
        at com.sun.tools.javac.tree.JCTree$JCVariableDecl.accept(JCTree.java:852)
        at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:576)
        at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:645)
        at com.sun.tools.javac.comp.Attr.visitForeachLoop(Attr.java:1168)
        at com.sun.tools.javac.tree.JCTree$JCEnhancedForLoop.accept(JCTree.java:1035)
        at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:576)
        at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:645)
        at com.sun.tools.javac.comp.Attr.attribStats(Attr.java:661)
        at com.sun.tools.javac.comp.Attr.visitBlock(Attr.java:1124)
        at com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:909)
        at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:576)
        at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:645)
        at com.sun.tools.javac.comp.Attr.visitMethodDef(Attr.java:1013)
        at com.sun.tools.javac.tree.JCTree$JCMethodDecl.accept(JCTree.java:778)
        at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:576)
        at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:645)
        at com.sun.tools.javac.comp.Attr.attribClassBody(Attr.java:4364)
        at com.sun.tools.javac.comp.Attr.attribClass(Attr.java:4272)
        at com.sun.tools.javac.comp.Attr.attribClass(Attr.java:4201)
        at com.sun.tools.javac.comp.Attr.visitClassDef(Attr.java:870)
        at com.sun.tools.javac.tree.JCTree$JCClassDecl.accept(JCTree.java:693)
        at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:576)
        at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:645)
        at com.sun.tools.javac.comp.Attr.visitNewClass(Attr.java:2144)
        at com.sun.tools.javac.tree.JCTree$JCNewClass.accept(JCTree.java:1516)
        at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:576)
        at com.sun.tools.javac.comp.Attr.attribExpr(Attr.java:618)
        at com.sun.tools.javac.comp.Attr.visitVarDef(Attr.java:1075)
        at com.sun.tools.javac.tree.JCTree$JCVariableDecl.accept(JCTree.java:852)
        at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:576)
        at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:645)
        at lombok.javac.JavacResolution.attrib(JavacResolution.java:259)
        at lombok.javac.JavacResolution.memberEnterAndAttribute(JavacResolution.java:221)
        at lombok.javac.JavacResolution.resolveMethodMember(JavacResolution.java:169)
        at lombok.javac.handlers.HandleVal.endVisitLocal(HandleVal.java:150)
        at lombok.javac.JavacNode.traverse(JavacNode.java:122)
        at lombok.javac.JavacAST.traverseChildren(JavacAST.java:222)
        at lombok.javac.JavacNode.traverse(JavacNode.java:126)
        at lombok.javac.JavacAST.traverseChildren(JavacAST.java:222)
        at lombok.javac.JavacNode.traverse(JavacNode.java:126)
        at lombok.javac.JavacAST.traverseChildren(JavacAST.java:222)
        at lombok.javac.JavacNode.traverse(JavacNode.java:105)
        at lombok.javac.JavacAST.traverseChildren(JavacAST.java:222)
        at lombok.javac.JavacNode.traverse(JavacNode.java:95)
        at lombok.javac.JavacAST.traverseChildren(JavacAST.java:222)
        at lombok.javac.JavacNode.traverse(JavacNode.java:126)
        at lombok.javac.JavacAST.traverseChildren(JavacAST.java:222)
        at lombok.javac.JavacNode.traverse(JavacNode.java:100)
        at lombok.javac.JavacAST.traverseChildren(JavacAST.java:222)
        at lombok.javac.JavacNode.traverse(JavacNode.java:95)
        at lombok.javac.JavacAST.traverseChildren(JavacAST.java:222)
        at lombok.javac.JavacNode.traverse(JavacNode.java:95)
        at lombok.javac.JavacAST.traverseChildren(JavacAST.java:222)
        at lombok.javac.JavacNode.traverse(JavacNode.java:90)
        at lombok.javac.JavacAST.traverse(JavacAST.java:218)
        at lombok.javac.HandlerLibrary.callASTVisitors(HandlerLibrary.java:276)
        at lombok.javac.JavacTransformer.transform(JavacTransformer.java:64)
        at lombok.javac.apt.LombokProcessor.process(LombokProcessor.java:328)
        at lombok.core.AnnotationProcessor$JavacDescriptor.process(AnnotationProcessor.java:187)
        at lombok.core.AnnotationProcessor.process(AnnotationProcessor.java:241)
        at lombok.launch.AnnotationProcessorHider$AnnotationProcessor.process(AnnotationProcessor.java:90)
        at com.sun.tools.javac.processing.JavacProcessingEnvironment.callProcessor(JavacProcessingEnvironment.java:794)
        at com.sun.tools.javac.processing.JavacProcessingEnvironment.discoverAndRunProcs(JavacProcessingEnvironment.java:705)
        at com.sun.tools.javac.processing.JavacProcessingEnvironment.access$1800(JavacProcessingEnvironment.java:91)
        at com.sun.tools.javac.processing.JavacProcessingEnvironment$Round.run(JavacProcessingEnvironment.java:1035)
        at com.sun.tools.javac.processing.JavacProcessingEnvironment.doProcessing(JavacProcessingEnvironment.java:1176)
        at com.sun.tools.javac.main.JavaCompiler.processAnnotations(JavaCompiler.java:1170)
        at com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:856)
        at com.sun.tools.javac.main.Main.compile(Main.java:523)
        at com.sun.tools.javac.api.JavacTaskImpl.doCall(JavacTaskImpl.java:129)
        at com.sun.tools.javac.api.JavacTaskImpl.call(JavacTaskImpl.java:138)
        at org.codehaus.plexus.compiler.javac.JavaxToolsCompiler.compileInProcess(JavaxToolsCompiler.java:126)
        at org.codehaus.plexus.compiler.javac.JavacCompiler.performCompile(JavacCompiler.java:174)
        at org.apache.maven.plugin.compiler.AbstractCompilerMojo.execute(AbstractCompilerMojo.java:1134)
        at org.apache.maven.plugin.compiler.CompilerMojo.execute(CompilerMojo.java:187)
        at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:137)
        at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:210)
        at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:156)
        at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:148)
        at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:117)
        at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:81)
        at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:56)
        at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128)
        at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:305)
        at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:192)
        at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:105)
        at org.apache.maven.cli.MavenCli.execute(MavenCli.java:972)
        at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:293)
        at org.apache.maven.cli.MavenCli.main(MavenCli.java:196)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:282)
        at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:225)
        at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:406)
        at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:347)
[INFO] -------------------------------------------------------------
[ERROR] COMPILATION ERROR :
[INFO] -------------------------------------------------------------
[ERROR] Lombok visitor handler class lombok.javac.handlers.HandleVal failed: java.lang.NullPointerException
[INFO] 1 error
[INFO] -------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary for yuanluServerDo 1.1.8-SNAPSHOT:
[INFO]
[INFO] yuanluServerDo ..................................... SUCCESS [  0.218 s]
[INFO] yuanluServerDo-common .............................. SUCCESS [  5.050 s]
[INFO] YuanluServerDo Bukkit .............................. SUCCESS [  7.789 s]
[INFO] YuanluServerDo BungeeCord .......................... FAILURE [ 15.781 s]
[INFO] YuanluServerDo Velocity ............................ SKIPPED
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  28.980 s
[INFO] Finished at: 2022-03-23T20:23:50+08:00
[INFO] ------------------------------------------------------------------------
[WARNING] The requested profile "dev" could not be activated because it does not exist.
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.8.1:compile (default-compile) on project yuanluServerDo-bungeecord: Compilation failure
[ERROR] Lombok visitor handler class lombok.javac.handlers.HandleVal failed: java.lang.NullPointerException
[ERROR]
[ERROR] -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException
[ERROR]
[ERROR] After correcting the problems, you can resume the build with the command
[ERROR]   mvn <args> -rf :yuanluServerDo-bungeecord

Expected behavior
Correct build

Version info (please complete the following information):

  • Lombok version: 1.18.22
  • Platform: IDEA U 2021.3.3
  • Java: 1.8.0_261
  • Apache Maven 3.8.3
Apache Maven 3.8.3 (ff8e977a158738155dc465c6a97ffaf31982d739)
Maven home: D:\document\development\java\maven\apache-maven-3.8.3
Java version: 1.8.0_171, vendor: Oracle Corporation, runtime: C:\Program Files\Java\jdk1.8.0_171\jre
Default locale: zh_CN, platform encoding: GBK
OS name: "windows 10", version: "10.0", arch: "amd64", family: "windows"

Additional context
old repo
When I used eclipse before, I occasionally encountered the same problem. At that time, there was the same problem with the same file. No matter how I operate, I can't successful build. But without any operation, I can build normally in a week later.
But after switching to the command line or idea, this method fails. I can't build it anymore.
@Rawi01
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Rawi01 commented Mar 23, 2022

The new repo requires a login

@MineYuanlu
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The new repo requires a login

https://github.com/MineYuanlu/yuanluServerDo
Sorry, there may be something wrong with that platform.

@Rawi01
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Rawi01 commented Mar 23, 2022

Thanks, managed to reproduce it

@Rawi01 Rawi01 added bug javac accepted The issue/enhancement is valid, sensible, and explained in sufficient detail labels Mar 23, 2022
@Rawi01 Rawi01 self-assigned this Mar 23, 2022
@Rawi01
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Rawi01 commented Mar 23, 2022

Simple reproducer:

import java.util.HashMap;
import java.util.Map;

public class ValTest {
	public enum A {
		A {
			void method() {
				lombok.val wa = new ValTest();
				
				for (lombok.val x : new HashMap<String, Long>().entrySet()) {
					lombok.val name = x.getKey();
				}
			}
		}
	}
}

The enum seems to be the problem. I managed to run this example but this reverts the changes for #278 which is probably not a good idea...

@MineYuanlu
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Oh！ Thank you very much. It seems that's the problem. After I replace all the "val" inside the enum with the actual type, I can build it.

But can Lombok fix this problem? Or we can only to avoid the problem by not using this form of code?

图片

@MineYuanlu
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@Rawi01 Do I need to close this issue?

@rzwitserloot
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Well, it is a bug. It's not the only one with val. Let's leave it open for now.

@gisrenliang
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dd

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@rzwitserloot @Rawi01 @gisrenliang @MineYuanlu