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Posted to notifications@groovy.apache.org by "Paul King (Jira)" <ji...@apache.org> on 2023/02/10 21:41:00 UTC
[jira] [Closed] (GROOVY-10701) NullPointerException in instruction selection phase when having conditionals with lambdas and function references
[ https://issues.apache.org/jira/browse/GROOVY-10701?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Paul King closed GROOVY-10701.
------------------------------
> NullPointerException in instruction selection phase when having conditionals with lambdas and function references
> -----------------------------------------------------------------------------------------------------------------
>
> Key: GROOVY-10701
> URL: https://issues.apache.org/jira/browse/GROOVY-10701
> Project: Groovy
> Issue Type: Bug
> Components: Static Type Checker
> Reporter: Thodoris Sotiropoulos
> Assignee: Eric Milles
> Priority: Major
> Fix For: 4.0.5
>
>
> I have the following program
> {code}
> import java.util.function.Function;
> class Test {
> <T> void m1(Function<T, T> x) {}
> double m2(double x) {
> return x;
> }
> void m3() {
> m1((true) ? (Double x) -> x : this::m2);
> }
> }
> {code}
> This program crashes the compiler with the following stacktrace
> {code}
> >>> a serious error occurred: BUG! exception in phase 'instruction selection' in source unit 'test.groovy' unexpected NullPointerException
> >>> stacktrace:
> BUG! exception in phase 'instruction selection' in source unit 'test.groovy' unexpected NullPointerException
> at org.codehaus.groovy.control.CompilationUnit$IPrimaryClassNodeOperation.doPhaseOperation(CompilationUnit.java:942)
> at org.codehaus.groovy.control.CompilationUnit.processPhaseOperations(CompilationUnit.java:692)
> at org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:666)
> at org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:647)
> at org.codehaus.groovy.tools.FileSystemCompiler.compile(FileSystemCompiler.java:311)
> at org.codehaus.groovy.tools.FileSystemCompiler.doCompilation(FileSystemCompiler.java:240)
> at org.codehaus.groovy.tools.FileSystemCompiler.commandLineCompile(FileSystemCompiler.java:165)
> at org.codehaus.groovy.tools.FileSystemCompiler.commandLineCompileWithErrorHandling(FileSystemCompiler.java:205)
> at org.codehaus.groovy.tools.FileSystemCompiler.main(FileSystemCompiler.java:189)
> Caused by: java.lang.NullPointerException: Cannot invoke "org.codehaus.groovy.ast.ClassNode.isInterface()" because "type" is null
> at org.codehaus.groovy.ast.ClassHelper.findSAM(ClassHelper.java:563)
> at org.codehaus.groovy.ast.ClassHelper.isSAMType(ClassHelper.java:538)
> at org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.checkForTargetType(StaticTypeCheckingVisitor.java:4281)
> at org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.visitValueExpression(StaticTypeCheckingVisitor.java:4255)
> at org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.visitTernaryExpression(StaticTypeCheckingVisitor.java:4226)
> at org.codehaus.groovy.ast.expr.TernaryExpression.visit(TernaryExpression.java:44)
> at org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.visitMethodCallArguments(StaticTypeCheckingVisitor.java:2824)
> at org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.visitMethodCallExpression(StaticTypeCheckingVisitor.java:3370)
> at org.codehaus.groovy.transform.sc.StaticCompilationVisitor.visitMethodCallExpression(StaticCompilationVisitor.java:420)
> at org.codehaus.groovy.ast.expr.MethodCallExpression.visit(MethodCallExpression.java:77)
> at org.codehaus.groovy.ast.CodeVisitorSupport.visitExpressionStatement(CodeVisitorSupport.java:117)
> at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitExpressionStatement(ClassCodeVisitorSupport.java:204)
> at org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.visitExpressionStatement(StaticTypeCheckingVisitor.java:2205)
> at org.codehaus.groovy.ast.stmt.ExpressionStatement.visit(ExpressionStatement.java:41)
> at org.codehaus.groovy.ast.CodeVisitorSupport.visitBlockStatement(CodeVisitorSupport.java:86)
> at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitBlockStatement(ClassCodeVisitorSupport.java:168)
> at org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.visitBlockStatement(StaticTypeCheckingVisitor.java:3991)
> at org.codehaus.groovy.ast.stmt.BlockStatement.visit(BlockStatement.java:70)
> at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitClassCodeContainer(ClassCodeVisitorSupport.java:142)
> at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitConstructorOrMethod(ClassCodeVisitorSupport.java:115)
> at org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.visitConstructorOrMethod(StaticTypeCheckingVisitor.java:2604)
> at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitMethod(ClassCodeVisitorSupport.java:110)
> at org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.startMethodInference(StaticTypeCheckingVisitor.java:2587)
> at org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.visitMethod(StaticTypeCheckingVisitor.java:2566)
> at org.codehaus.groovy.transform.sc.StaticCompilationVisitor.visitConstructorOrMethod(StaticCompilationVisitor.java:235)
> at org.codehaus.groovy.transform.sc.StaticCompilationVisitor.visitMethod(StaticCompilationVisitor.java:250)
> at org.codehaus.groovy.ast.ClassNode.visitMethods(ClassNode.java:1131)
> at org.codehaus.groovy.ast.ClassNode.visitContents(ClassNode.java:1124)
> at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitClass(ClassCodeVisitorSupport.java:52)
> at org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.visitClass(StaticTypeCheckingVisitor.java:437)
> at org.codehaus.groovy.transform.sc.StaticCompilationVisitor.visitClass(StaticCompilationVisitor.java:196)
> at org.codehaus.groovy.transform.sc.StaticCompileTransformation.visit(StaticCompileTransformation.java:68)
> at org.codehaus.groovy.control.customizers.ASTTransformationCustomizer.call(ASTTransformationCustomizer.groovy:303)
> at org.codehaus.groovy.control.CompilationUnit$IPrimaryClassNodeOperation.doPhaseOperation(CompilationUnit.java:937)
> {code}
> Tested against master (commit: b29512397d6ff199976dfb8709c5950e525ac8d6)
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