[
https://issues.apache.org/jira/browse/GROOVY-10225?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Paul King closed GROOVY-10225.
------------------------------
> Unexpected NullPointerException during the "instruction selection" phase
> ------------------------------------------------------------------------
>
> Key: GROOVY-10225
> URL: https://issues.apache.org/jira/browse/GROOVY-10225
> Project: Groovy
> Issue Type: Bug
> Components: Static Type Checker
> Reporter: Thodoris Sotiropoulos
> Assignee: Eric Milles
> Priority: Major
> Fix For: 4.0.0-beta-2
>
>
> The following program
> {code:java}
> class Foo<Z> {
> final Z foo(Z x) {
> null;
> }
> }
> final class Bar<Y> { final Foo<Y> bar() {
> new Foo<>()
> }
> }
> class Main {
> static final <F_O extends Number, F_X extends F_O> void test() {
> final F_X x = (F_X) null
> (new Bar<F_O>()).bar().foo(((false) ? x : (F_X) null))
> }
> }
> {code}
> crashes the compiler and produces the following stacktrace
> {code:java}
> >>> 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:930)
> at
> org.codehaus.groovy.control.CompilationUnit.processPhaseOperations(CompilationUnit.java:654)
> at
> org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:631)
> at
> org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:607)
> 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.StaticTypeCheckingVisitor.resolvePlaceholdersFromImplicitTypeHints(StaticTypeCheckingVisitor.java:5439)
> at
> org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.visitMethodCallExpression(StaticTypeCheckingVisitor.java:3596)
> at
> org.codehaus.groovy.transform.sc.StaticCompilationVisitor.visitMethodCallExpression(StaticCompilationVisitor.java:414)
> 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:2169)
> 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:3992)
> 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:2602)
> at
> org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitMethod(ClassCodeVisitorSupport.java:110)
> at
> org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.startMethodInference(StaticTypeCheckingVisitor.java:2591)
> at
> org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.visitMethod(StaticTypeCheckingVisitor.java:2565)
> at
> org.codehaus.groovy.transform.sc.StaticCompilationVisitor.visitMethod(StaticCompilationVisitor.java:239)
> 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:436)
> at
> org.codehaus.groovy.transform.sc.StaticCompilationVisitor.visitClass(StaticCompilationVisitor.java:197)
> at
> org.codehaus.groovy.transform.sc.StaticCompileTransformation.visit(StaticCompileTransformation.java:68)
> at
> org.codehaus.groovy.control.customizers.ASTTransformationCustomizer.call(ASTTransformationCustomizer.groovy:298)
> at
> org.codehaus.groovy.control.CompilationUnit$IPrimaryClassNodeOperation.doPhaseOperation(CompilationUnit.java:925)
>
> {code}
> Tested against master
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