Details
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Bug
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Status: Closed
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Minor
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Resolution: Fixed
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2.4.15, 2.5.2
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None
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None
Description
The code here is not valid so I don't expect it to actually compile. I'm just reporting the internal compiler error which could be improved to emit a proper user-facing error.
I accidentally called a zero-argument closure with a method like each or collect.
@groovy.transform.CompileStatic class CompileStaticClosureArgs { static void main(String[] args) { [0].each { -> } } }
>>> a serious error occurred: BUG! exception in phase 'instruction selection' in source unit 'CompileStaticClosureArgs.groovy' unexpected NullpointerException >>> stacktrace: BUG! exception in phase 'instruction selection' in source unit 'CompileStaticClosureArgs.groovy' unexpected NullpointerException at org.codehaus.groovy.control.CompilationUnit.applyToPrimaryClassNodes(CompilationUnit.java:1092) at org.codehaus.groovy.control.CompilationUnit.doPhaseOperation(CompilationUnit.java:624) at org.codehaus.groovy.control.CompilationUnit.processPhaseOperations(CompilationUnit.java:602) at org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:579) at org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:558) at org.codehaus.groovy.tools.FileSystemCompiler.compile(FileSystemCompiler.java:71) at org.codehaus.groovy.tools.FileSystemCompiler.doCompilation(FileSystemCompiler.java:227) at org.codehaus.groovy.tools.FileSystemCompiler.commandLineCompile(FileSystemCompiler.java:160) at org.codehaus.groovy.tools.FileSystemCompiler.commandLineCompileWithErrorHandling(FileSystemCompiler.java:190) at org.codehaus.groovy.tools.FileSystemCompiler.main(FileSystemCompiler.java:174) 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:116) at org.codehaus.groovy.tools.GroovyStarter.main(GroovyStarter.java:138) Caused by: java.lang.NullPointerException at org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.doInferClosureParameterTypes(StaticTypeCheckingVisitor.java:2655) at org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.inferClosureParameterTypes(StaticTypeCheckingVisitor.java:2524) at org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.visitMethodCallArguments(StaticTypeCheckingVisitor.java:2490) at org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.visitMethodCallExpression(StaticTypeCheckingVisitor.java:3164) at org.codehaus.groovy.transform.sc.StaticCompilationVisitor.visitMethodCallExpression(StaticCompilationVisitor.java:397) at org.codehaus.groovy.ast.expr.MethodCallExpression.visit(MethodCallExpression.java:70) at org.codehaus.groovy.ast.CodeVisitorSupport.visitExpressionStatement(CodeVisitorSupport.java:122) at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitExpressionStatement(ClassCodeVisitorSupport.java:196) at org.codehaus.groovy.ast.stmt.ExpressionStatement.visit(ExpressionStatement.java:42) at org.codehaus.groovy.ast.CodeVisitorSupport.visitBlockStatement(CodeVisitorSupport.java:88) at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitBlockStatement(ClassCodeVisitorSupport.java:166) 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.transform.stc.StaticTypeCheckingVisitor.visitConstructorOrMethod(StaticTypeCheckingVisitor.java:1963) at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitMethod(ClassCodeVisitorSupport.java:126) at org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.startMethodInference(StaticTypeCheckingVisitor.java:2318) at org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.visitMethod(StaticTypeCheckingVisitor.java:2277) at org.codehaus.groovy.transform.sc.StaticCompilationVisitor.visitMethod(StaticCompilationVisitor.java:224) at org.codehaus.groovy.ast.ClassNode.visitContents(ClassNode.java:1081) at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitClass(ClassCodeVisitorSupport.java:53) at org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.visitClass(StaticTypeCheckingVisitor.java:375) at org.codehaus.groovy.transform.sc.StaticCompilationVisitor.visitClass(StaticCompilationVisitor.java:182) at org.codehaus.groovy.transform.sc.StaticCompileTransformation.visit(StaticCompileTransformation.java:67) at org.codehaus.groovy.transform.ASTTransformationVisitor.visitClass(ASTTransformationVisitor.java:152) at org.codehaus.groovy.transform.ASTTransformationVisitor$2.call(ASTTransformationVisitor.java:196) at org.codehaus.groovy.control.CompilationUnit.applyToPrimaryClassNodes(CompilationUnit.java:1087) ... 15 more
If @CompileStatic is removed, this correctly fails with a MissingMethodException at runtime.
groovy.lang.MissingMethodException: No signature of method: CompileStaticClosureArgs$_main_closure1.doCall() is applicable for argument types: (java.lang.Integer) values: [0]
Thank you for working on Groovy.
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