[GROOVY-4918] GetEffectivePojoPropertySite#acceptGetProperty may produce a NullPointerException when provided with a null 'receiver' object

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.8.0
• Fix Version/s: 2.4.1
• Component/s: groovy-runtime
• Labels: exception
• Assignee: Jochen Theodorou
• Reporter: Noam Y. Tenne
• Created: 11/Jul/11 07:38
• Updated: 23/Feb/15 01:12
• Resolved: 21/Jan/15 08:10

Description

When given a null receiver object, line 51 of org.codehaus.groovy.runtime.callsite.GetEffectivePojoPropertySite may produce a NullPointerException when trying to invoke java.lang.Object#getClass.
It seems that the commented-out if statement on line 50 handles this case by checking the receiver object with instanceof.
Although if fixed, a NullPointerException will eventually be thrown by the NullCallSite object when trying to access a property of the null object, the exception thrown by NullCallSite is much more descriptive.