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https://issues.apache.org/jira/browse/GROOVY-11805?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18039922#comment-18039922
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Eric Milles commented on GROOVY-11805:
--------------------------------------
When part of the compilation unit, the types are built up by ResolverVisitor
and other components of the compiler. It is the class loading into groovy
model that has the npe.
> Groovy5 compiler throws exception:
> "org.codehaus.groovy.ast.ClassNode.getGenericsTypes()" is null
> -------------------------------------------------------------------------------------------------
>
> Key: GROOVY-11805
> URL: https://issues.apache.org/jira/browse/GROOVY-11805
> Project: Groovy
> Issue Type: Bug
> Components: Compiler
> Affects Versions: 5.0.2
> Reporter: Ed T
> Assignee: Eric Milles
> Priority: Major
> Fix For: 5.0.3
>
>
> Compiler chokes on the following script. The code runs on JDK25 with Groovy
> 5.0.2.
>
> {code:java}
> interface BadBoy<T extends BadBoy<?>> {
> void doBadThing()
> }
> class MyBadBoy implements BadBoy<MyBadBoy> {
> void doBadThing() {
> println "bad thing!"
> }
> }
> class CreateBadThings {
> public static BadBoy<?> badThings(Closure cls) {
> println "bad things happened!"
> }
> }
> def classLoader = new GroovyClassLoader(this.class.getClassLoader())
> def shell = new GroovyShell(classLoader)
> def code = '''
> import static CreateBadThings.badThings
> badThings {
> }
> '''
> def compileAndRun(code, shell) {
> def script = shell.parse(code)
> script.run()
> }
> compileAndRun(code, shell) {code}
> It emits this error message.
> {code:java}
> BUG! exception in phase 'semantic analysis' in source unit 'Script1.groovy'
> unexpected NullPointerException
> at ConsoleScript9.compileAndRun(ConsoleScript9:29)
> at ConsoleScript9.run(ConsoleScript9:33)
> Caused by: java.lang.NullPointerException: Cannot load from object array
> because the return value of
> "org.codehaus.groovy.ast.ClassNode.getGenericsTypes()" is null{code}
>
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