[jira] [Created] (GROOVY-8204) @Delegate on arrays causes NPE during compilation

["Krzysztof Szafrański (JIRA)" <ji...@apache.org>]

Krzysztof Szafrański created GROOVY-8204:
--------------------------------------------

             Summary: @Delegate on arrays causes NPE during compilation
                 Key: GROOVY-8204
                 URL: https://issues.apache.org/jira/browse/GROOVY-8204
             Project: Groovy
          Issue Type: Bug
    Affects Versions: 2.4.11
            Reporter: Krzysztof Szafrański
            Priority: Minor


I have stumbled upon this bug partly by accident, and I'm not convinced it's a valid use case, but either way it should not crash the compiler with a NPE.

Trying to compile the following simple class:
{code}
import groovy.lang.Delegate

class BugsMe {

	@Delegate
	byte[] file
}
{code}

Results in the following exception:
{code}
>>> a serious error occurred: BUG! exception in phase 'canonicalization' in source unit 'BugsMe.groovy' unexpected NullpointerException
>>> stacktrace:
BUG! exception in phase 'canonicalization' in source unit 'BugsMe.groovy' unexpected NullpointerException
	at org.codehaus.groovy.control.CompilationUnit.applyToPrimaryClassNodes(CompilationUnit.java:1070)
	at org.codehaus.groovy.control.CompilationUnit.doPhaseOperation(CompilationUnit.java:603)
	at org.codehaus.groovy.control.CompilationUnit.processPhaseOperations(CompilationUnit.java:581)
	at org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:558)
	at org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:537)
	at org.codehaus.groovy.tools.FileSystemCompiler.compile(FileSystemCompiler.java:61)
	at org.codehaus.groovy.tools.FileSystemCompiler.doCompilation(FileSystemCompiler.java:217)
	at org.codehaus.groovy.tools.FileSystemCompiler.commandLineCompile(FileSystemCompiler.java:150)
	at org.codehaus.groovy.tools.FileSystemCompiler.commandLineCompileWithErrorHandling(FileSystemCompiler.java:180)
	at org.codehaus.groovy.tools.FileSystemCompiler.main(FileSystemCompiler.java:164)
	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:109)
	at org.codehaus.groovy.tools.GroovyStarter.main(GroovyStarter.java:131)
Caused by: java.lang.NullPointerException
	at org.codehaus.groovy.ast.ClassHelper.getNextSuperClass(ClassHelper.java:454)
	at org.codehaus.groovy.ast.ClassHelper.getNextSuperClass(ClassHelper.java:449)
	at org.codehaus.groovy.ast.tools.GenericsUtils.extractSuperClassGenerics(GenericsUtils.java:444)
	at org.codehaus.groovy.transform.DelegateASTTransformation.addDelegateMethod(DelegateASTTransformation.java:233)
	at org.codehaus.groovy.transform.DelegateASTTransformation.visit(DelegateASTTransformation.java:129)
	at org.codehaus.groovy.transform.ASTTransformationVisitor.visitClass(ASTTransformationVisitor.java:134)
	at org.codehaus.groovy.transform.ASTTransformationVisitor$2.call(ASTTransformationVisitor.java:178)
	at org.codehaus.groovy.control.CompilationUnit.applyToPrimaryClassNodes(CompilationUnit.java:1065)
	... 15 more
{code}



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