[jira] [Created] (GROOVY-8514) NullPointerException in class MissingMethodException

["Dennis K (JIRA)" <ji...@apache.org>]

Dennis K created GROOVY-8514:
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             Summary: NullPointerException in class MissingMethodException
                 Key: GROOVY-8514
                 URL: https://issues.apache.org/jira/browse/GROOVY-8514
             Project: Groovy
          Issue Type: Bug
    Affects Versions: 2.4.14
            Reporter: Dennis K


The class {{MissingMethodException}} throws an {{NullPointerException}} on {{getMessage()}} if {{arguments}} are null.

This can happen, if the someone calls {{GroovyScriptEngineImpl.getInterface}} and invokes a method without arguments on that interface. And the method  is not defined in the groovy script.

The {{InvocationHandler}} calls the method {{invokeImpl}} with {{null}} as arguments, because the interface method has no arguments. If the Method is not defined in the groovy script. A {{MissingMethodException}} is thrown and catched. Than the following {{NoSuchMethodException(var5.getMessage());}} is thrown. But {{getMessage()}} itself throws an NPE due to {{arguments}} is null.

From the Java Documentation [InvocationHandler|https://docs.oracle.com/javase/8/docs/api/java/lang/reflect/InvocationHandler.html]
{quote}args - an array of objects containing the values of the arguments passed in the method invocation on the proxy instance, or null if interface method takes no arguments. Arguments of primitive types are wrapped in instances of the appropriate primitive wrapper class, such as java.lang.Integer or java.lang.Boolean.
{quote}








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