Details
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Bug
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Status: Closed
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Major
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Resolution: Fixed
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None
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None
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None
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None
Description
When testing the try-with-resouces construct in the Groovy console, I did a mistake, and forgot the semi-colon in between resources:
def input = new File('./NOTICE') try ( FileInputStream fin = new FileInputStream(input) GZIPOutputStream out = new GZIPOutputStream(new FileOutputStream(output)) ) { byte[] buffer = new byte[4096] int nread = 0 while ((nread = fin.read(buffer)) != -1) { out.write(buffer, 0, nread) } }
And I got the following NPE:
java.lang.NullPointerException at org.apache.groovy.parser.antlr4.AstBuilder.configureAST(AstBuilder.java:3775) at org.apache.groovy.parser.antlr4.AstBuilder.visitCommandExpression(AstBuilder.java:1484) at org.apache.groovy.parser.antlr4.AstBuilder.visitCommandExprAlt(AstBuilder.java:1449) at org.apache.groovy.parser.antlr4.AstBuilder.visitCommandExprAlt(AstBuilder.java:67) at org.apache.groovy.parser.antlr4.GroovyParser$CommandExprAltContext.accept(GroovyParser.java:7491) at org.antlr.v4.runtime.tree.AbstractParseTreeVisitor.visit(AbstractParseTreeVisitor.java:44) at org.apache.groovy.parser.antlr4.AstBuilder.visit(AstBuilder.java:3408) at org.apache.groovy.parser.antlr4.AstBuilder.visitVariableInitializer(AstBuilder.java:1408) at org.apache.groovy.parser.antlr4.AstBuilder.visitVariableDeclarator(AstBuilder.java:1392) at org.apache.groovy.parser.antlr4.AstBuilder.lambda$visitVariableDeclarators$17(AstBuilder.java:1365) at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193) at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1374) at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481) at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471) at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708) at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499) at org.apache.groovy.parser.antlr4.AstBuilder.visitVariableDeclarators(AstBuilder.java:1368) at org.apache.groovy.parser.antlr4.AstBuilder.visitVariableDeclaration(AstBuilder.java:1257) at org.apache.groovy.parser.antlr4.AstBuilder.visitLocalVariableDeclaration(AstBuilder.java:1210) at org.apache.groovy.parser.antlr4.AstBuilder.visitResource(AstBuilder.java:447) at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193) at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1374) at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481) at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471) at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708) at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499) at org.apache.groovy.parser.antlr4.AstBuilder.visitResourceList(AstBuilder.java:442) at org.apache.groovy.parser.antlr4.AstBuilder.visitResources(AstBuilder.java:437) at org.apache.groovy.parser.antlr4.AstBuilder.visitTryCatchStatement(AstBuilder.java:417) at org.apache.groovy.parser.antlr4.AstBuilder.visitTryCatchStmtAlt(AstBuilder.java:407) at org.apache.groovy.parser.antlr4.AstBuilder.visitTryCatchStmtAlt(AstBuilder.java:67) at org.apache.groovy.parser.antlr4.GroovyParser$TryCatchStmtAltContext.accept(GroovyParser.java:6039) at org.antlr.v4.runtime.tree.AbstractParseTreeVisitor.visit(AbstractParseTreeVisitor.java:44) at org.apache.groovy.parser.antlr4.AstBuilder.visit(AstBuilder.java:3408) at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193) at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1374) at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481) at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471) at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:418) at org.apache.groovy.parser.antlr4.AstBuilder.visitCompilationUnit(AstBuilder.java:141) at org.apache.groovy.parser.antlr4.AstBuilder.visitCompilationUnit(AstBuilder.java:67) at org.apache.groovy.parser.antlr4.GroovyParser$CompilationUnitContext.accept(GroovyParser.java:290) at org.antlr.v4.runtime.tree.AbstractParseTreeVisitor.visit(AbstractParseTreeVisitor.java:44) at org.apache.groovy.parser.antlr4.AstBuilder.visit(AstBuilder.java:3408) at org.apache.groovy.parser.antlr4.AstBuilder.buildAST(AstBuilder.java:116) at org.apache.groovy.parser.antlr4.Antlr4ParserPlugin.buildAST(Antlr4ParserPlugin.java:43) at org.codehaus.groovy.control.SourceUnit.convert(SourceUnit.java:269) at org.codehaus.groovy.control.CompilationUnit$15.call(CompilationUnit.java:690) at org.codehaus.groovy.control.CompilationUnit.applyToSourceUnits(CompilationUnit.java:948) at org.codehaus.groovy.control.CompilationUnit.doPhaseOperation(CompilationUnit.java:615) at org.codehaus.groovy.control.CompilationUnit.processPhaseOperations(CompilationUnit.java:591) at org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:568) at groovy.lang.GroovyClassLoader.doParseClass(GroovyClassLoader.java:299) at groovy.lang.GroovyClassLoader.parseClass(GroovyClassLoader.java:269) at groovy.lang.GroovyShell.parseClass(GroovyShell.java:688) at groovy.lang.GroovyShell.run(GroovyShell.java:517) at groovy.lang.GroovyShell.run(GroovyShell.java:497) at groovy.lang.GroovyShell.run(GroovyShell.java:170) at groovy.lang.GroovyShell$run$1.call(Unknown Source) at groovy.ui.Console$_runScriptImpl_closure17.doCall(Console.groovy:1045) at groovy.ui.Console$_runScriptImpl_closure17.doCall(Console.groovy) at sun.reflect.GeneratedMethodAccessor226.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:93) at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325) at org.codehaus.groovy.runtime.metaclass.ClosureMetaClass.invokeMethod(ClosureMetaClass.java:294) at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:994) at groovy.lang.Closure.call(Closure.java:415) at groovy.lang.Closure.call(Closure.java:409) at groovy.lang.Closure.run(Closure.java:496) at java.lang.Thread.run(Thread.java:745)