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From "Paul King (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (GROOVY-8112) NPE in Groovy compiler when referencing @Field in aic
Date Wed, 01 Nov 2017 09:24:00 GMT

     [ https://issues.apache.org/jira/browse/GROOVY-8112?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Paul King resolved GROOVY-8112.
-------------------------------
       Resolution: Fixed
         Assignee: Paul King
    Fix Version/s: 2.4.13

Proposed PR merged. Thanks for spotting the issue.

> NPE in Groovy compiler when referencing @Field in aic
> -----------------------------------------------------
>
>                 Key: GROOVY-8112
>                 URL: https://issues.apache.org/jira/browse/GROOVY-8112
>             Project: Groovy
>          Issue Type: Bug
>          Components: xforms
>    Affects Versions: 2.4.9
>         Environment: Windows 8 x64
>            Reporter: Alexey Vladykin
>            Assignee: Paul King
>            Priority: Major
>             Fix For: 2.4.13
>
>
> The following Groovy script causes NPE at compile time:
> {code:java|title=Bug.groovy}
> @Grapes([
>     @Grab("org.slf4j:slf4j-api:1.7.22"),
>     @Grab("org.apache.kafka:kafka-clients:0.10.2.0")
> ])
> import groovy.transform.Field
> import org.apache.kafka.clients.producer.Callback
> import org.apache.kafka.clients.producer.KafkaProducer
> import org.apache.kafka.clients.producer.ProducerRecord
> import org.apache.kafka.clients.producer.RecordMetadata
> import org.slf4j.Logger
> import org.slf4j.LoggerFactory
> @Field static final Logger logger = LoggerFactory.getLogger(Bug.class)
> wrapper {
>     Properties config = new Properties()
>     KafkaProducer kafkaProducer = new KafkaProducer<>(config)
>     kafkaProducer.send(new ProducerRecord<>('topic', 'data'), new Callback() {
>         @Override
>         void onCompletion(RecordMetadata recordMetadata, Exception e) {
>             if (e != null) {
>                 logger.error("Error sending to Kafka", e)
>             }
>         }
>     })
> }
> {code}
> Full error message from groovyc:
> {code:none}
> org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
> General error during class generation: NPE while processing Bug.groovy
> groovy.lang.GroovyRuntimeException: NPE while processing Bug.groovy
> 	at org.codehaus.groovy.classgen.AsmClassGenerator.visitClass(AsmClassGenerator.java:258)
> 	at org.codehaus.groovy.control.CompilationUnit$16.call(CompilationUnit.java:813)
> 	at org.codehaus.groovy.control.CompilationUnit$16.call(CompilationUnit.java:830)
> 	at org.codehaus.groovy.control.CompilationUnit.applyToPrimaryClassNodes(CompilationUnit.java:1053)
> 	at org.codehaus.groovy.control.CompilationUnit.doPhaseOperation(CompilationUnit.java:591)
> 	at org.codehaus.groovy.control.CompilationUnit.processPhaseOperations(CompilationUnit.java:569)
> 	at org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:546)
> 	at org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:525)
> 	at org.codehaus.groovy.tools.FileSystemCompiler.compile(FileSystemCompiler.java:61)
> 	at org.codehaus.groovy.tools.FileSystemCompiler.doCompilation(FileSystemCompiler.java:217)
> 	at org.codehaus.groovy.tools.FileSystemCompiler.commandLineCompile(FileSystemCompiler.java:150)
> 	at org.codehaus.groovy.tools.FileSystemCompiler.commandLineCompileWithErrorHandling(FileSystemCompiler.java:180)
> 	at org.codehaus.groovy.tools.FileSystemCompiler.main(FileSystemCompiler.java:164)
> 	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.groovy.tools.GroovyStarter.rootLoader(GroovyStarter.java:109)
> 	at org.codehaus.groovy.tools.GroovyStarter.main(GroovyStarter.java:131)
> Caused by: java.lang.NullPointerException
> 	at org.codehaus.groovy.classgen.AsmClassGenerator.visitFieldExpression(AsmClassGenerator.java:1049)
> 	at org.codehaus.groovy.classgen.asm.ClosureWriter.loadReference(ClosureWriter.java:135)
> 	at org.codehaus.groovy.classgen.asm.InvocationWriter.loadVariableWithReference(InvocationWriter.java:611)
> 	at org.codehaus.groovy.classgen.asm.InvocationWriter.writeAICCall(InvocationWriter.java:596)
> 	at org.codehaus.groovy.classgen.asm.InvocationWriter.writeInvokeConstructor(InvocationWriter.java:571)
> 	at org.codehaus.groovy.classgen.AsmClassGenerator.visitConstructorCallExpression(AsmClassGenerator.java:818)
> 	at org.codehaus.groovy.ast.expr.ConstructorCallExpression.visit(ConstructorCallExpression.java:46)
> 	at org.codehaus.groovy.classgen.asm.CallSiteWriter.makeCallSite(CallSiteWriter.java:303)
> 	at org.codehaus.groovy.classgen.asm.InvocationWriter.makeCachedCall(InvocationWriter.java:307)
> 	at org.codehaus.groovy.classgen.asm.InvocationWriter.makeCall(InvocationWriter.java:392)
> 	at org.codehaus.groovy.classgen.asm.InvocationWriter.makeCall(InvocationWriter.java:104)
> 	at org.codehaus.groovy.classgen.asm.InvocationWriter.makeInvokeMethodCall(InvocationWriter.java:88)
> 	at org.codehaus.groovy.classgen.asm.InvocationWriter.writeInvokeMethod(InvocationWriter.java:459)
> 	at org.codehaus.groovy.classgen.AsmClassGenerator.visitMethodCallExpression(AsmClassGenerator.java:767)
> 	at org.codehaus.groovy.ast.expr.MethodCallExpression.visit(MethodCallExpression.java:66)
> 	at org.codehaus.groovy.classgen.asm.StatementWriter.writeReturn(StatementWriter.java:589)
> 	at org.codehaus.groovy.classgen.asm.OptimizingStatementWriter.writeReturn(OptimizingStatementWriter.java:319)
> 	at org.codehaus.groovy.classgen.AsmClassGenerator.visitReturnStatement(AsmClassGenerator.java:616)
> 	at org.codehaus.groovy.ast.stmt.ReturnStatement.visit(ReturnStatement.java:49)
> 	at org.codehaus.groovy.classgen.asm.StatementWriter.writeBlockStatement(StatementWriter.java:84)
> 	at org.codehaus.groovy.classgen.asm.OptimizingStatementWriter.writeBlockStatement(OptimizingStatementWriter.java:158)
> 	at org.codehaus.groovy.classgen.AsmClassGenerator.visitBlockStatement(AsmClassGenerator.java:566)
> 	at org.codehaus.groovy.ast.stmt.BlockStatement.visit(BlockStatement.java:71)
> 	at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitClassCodeContainer(ClassCodeVisitorSupport.java:104)
> 	at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitConstructorOrMethod(ClassCodeVisitorSupport.java:115)
> 	at org.codehaus.groovy.classgen.AsmClassGenerator.visitStdMethod(AsmClassGenerator.java:430)
> 	at org.codehaus.groovy.classgen.AsmClassGenerator.visitConstructorOrMethod(AsmClassGenerator.java:387)
> 	at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitMethod(ClassCodeVisitorSupport.java:126)
> 	at org.codehaus.groovy.classgen.AsmClassGenerator.visitMethod(AsmClassGenerator.java:507)
> 	at org.codehaus.groovy.ast.ClassNode.visitContents(ClassNode.java:1078)
> 	at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitClass(ClassCodeVisitorSupport.java:53)
> 	at org.codehaus.groovy.classgen.AsmClassGenerator.visitClass(AsmClassGenerator.java:233)
> 	... 18 more
> 1 error
> {code}



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