Guillaume Laforge created GROOVY-8005:
-----------------------------------------
Summary: NPE when using try-with-resources with a missing
semi-colon
Key: GROOVY-8005
URL: https://issues.apache.org/jira/browse/GROOVY-8005
Project: Groovy
Issue Type: Bug
Reporter: Guillaume Laforge
When testing the try-with-resouces construct in the Groovy console, I did a
mistake, and forgot the semi-colon in between resources:
{code}
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)
}
}
{code}
And I got the following NPE:
{code}
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)
{code}
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