[
https://issues.apache.org/jira/browse/GROOVY-11026?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Eric Milles reassigned GROOVY-11026:
------------------------------------
Assignee: Eric Milles
> NPE when checking compatibility of method reference
> ---------------------------------------------------
>
> Key: GROOVY-11026
> URL: https://issues.apache.org/jira/browse/GROOVY-11026
> Project: Groovy
> Issue Type: Bug
> Components: Static Type Checker
> Reporter: Thodoris Sotiropoulos
> Assignee: Eric Milles
> Priority: Minor
>
> I have the following program
> {code}
> import java.util.function.*;
> import java.util.List;
> class Main {
> static final void test() {
> List<String> x = null;
> m(x::set);
> }
> static final <T, R> void m(BiFunction<T, R, R> y) {}
> }
> {code}
> h3. Actual behavior
> {code}
> BUG! exception in phase 'instruction selection' in source unit 'test.groovy'
> unexpected NullPointerException
> at
> org.codehaus.groovy.control.CompilationUnit$IPrimaryClassNodeOperation.doPhaseOperation(CompilationUnit.java:953)
> at
> org.codehaus.groovy.control.CompilationUnit.processPhaseOperations(CompilationUnit.java:694)
> at
> org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:668)
> at
> org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:649)
> at
> org.codehaus.groovy.tools.FileSystemCompiler.compile(FileSystemCompiler.java:311)
> at
> org.codehaus.groovy.tools.FileSystemCompiler.doCompilation(FileSystemCompiler.java:240)
> at
> org.codehaus.groovy.tools.FileSystemCompiler.commandLineCompile(FileSystemCompiler.java:165)
> at
> org.codehaus.groovy.tools.FileSystemCompiler.commandLineCompileWithErrorHandling(FileSystemCompiler.java:205)
> at
> org.codehaus.groovy.tools.FileSystemCompiler.main(FileSystemCompiler.java:189)
> Caused by: java.lang.NullPointerException
> at
> org.codehaus.groovy.transform.stc.StaticTypeCheckingSupport.checkCompatibleAssignmentTypes(StaticTypeCheckingSupport.java:725)
> at
> org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.lambda$visitMethodPointerExpression$25(StaticTypeCheckingVisitor.java:2504)
> at java.base/java.util.Optional.ifPresent(Optional.java:183)
> at
> org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.visitMethodPointerExpression(StaticTypeCheckingVisitor.java:2496)
> at
> org.codehaus.groovy.ast.CodeVisitorSupport.visitMethodReferenceExpression(CodeVisitorSupport.java:319)
> at
> org.codehaus.groovy.ast.expr.MethodReferenceExpression.visit(MethodReferenceExpression.java:34)
> at
> org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.visitMethodCallArguments(StaticTypeCheckingVisitor.java:2912)
> at
> org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.visitStaticMethodCallExpression(StaticTypeCheckingVisitor.java:2820)
> at
> org.codehaus.groovy.ast.expr.StaticMethodCallExpression.visit(StaticMethodCallExpression.java:44)
> at
> org.codehaus.groovy.ast.CodeVisitorSupport.visitExpressionStatement(CodeVisitorSupport.java:117)
> at
> org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitExpressionStatement(ClassCodeVisitorSupport.java:212)
> at
> org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.visitExpressionStatement(StaticTypeCheckingVisitor.java:2217)
> at
> org.codehaus.groovy.ast.stmt.ExpressionStatement.visit(ExpressionStatement.java:41)
> at
> org.codehaus.groovy.ast.CodeVisitorSupport.visitBlockStatement(CodeVisitorSupport.java:86)
> at
> org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitBlockStatement(ClassCodeVisitorSupport.java:175)
> at
> org.codehaus.groovy.ast.stmt.BlockStatement.visit(BlockStatement.java:72)
> at
> org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitClassCodeContainer(ClassCodeVisitorSupport.java:139)
> at
> org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitConstructorOrMethod(ClassCodeVisitorSupport.java:118)
> at
> org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.lambda$visitConstructorOrMethod$28(StaticTypeCheckingVisitor.java:2681)
> at
> org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.doWithTypeCheckingExtensions(StaticTypeCheckingVisitor.java:463)
> at
> org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.visitConstructorOrMethod(StaticTypeCheckingVisitor.java:2681)
> at
> org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitMethod(ClassCodeVisitorSupport.java:110)
> at
> org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.startMethodInference(StaticTypeCheckingVisitor.java:2664)
> at
> org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.visitMethod(StaticTypeCheckingVisitor.java:2643)
> at
> org.codehaus.groovy.transform.sc.StaticCompilationVisitor.visitConstructorOrMethod(StaticCompilationVisitor.java:189)
> at
> org.codehaus.groovy.transform.sc.StaticCompilationVisitor.visitMethod(StaticCompilationVisitor.java:204)
> at org.codehaus.groovy.ast.ClassNode.visitMethods(ClassNode.java:1144)
> at
> org.codehaus.groovy.ast.ClassNode.visitContents(ClassNode.java:1137)
> at
> org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitClass(ClassCodeVisitorSupport.java:52)
> at
> org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.lambda$visitClass$3(StaticTypeCheckingVisitor.java:499)
> at
> org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.doWithTypeCheckingExtensions(StaticTypeCheckingVisitor.java:463)
> at
> org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.visitClass(StaticTypeCheckingVisitor.java:499)
> at
> org.codehaus.groovy.transform.sc.StaticCompilationVisitor.visitClass(StaticCompilationVisitor.java:151)
> at
> org.codehaus.groovy.transform.sc.StaticCompileTransformation.visit(StaticCompileTransformation.java:68)
> at
> org.codehaus.groovy.control.customizers.ASTTransformationCustomizer.call(ASTTransformationCustomizer.groovy:303)
> at
> org.codehaus.groovy.control.CompilationUnit$IPrimaryClassNodeOperation.doPhaseOperation(CompilationUnit.java:948)
> ... 8 more
> {code}
> h3. Compile succssfully
> h3. Notes
> Tested against master (commit: 8346e3406ed51dd071a2d31792d3fbad543585a7)
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
