[GROOVY-2757] java.lang.NullPointerException: groovy.lang.MetaClassImpl.findMethod

• Type: Bug
• Status: Closed
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 1.5.4, 1.5.5
• Fix Version/s: 1.5.6
• Component/s: class generator
• Environment: Linux xdblade09b08 2.6.16.27-0.9-smp #1 SMP Tue Feb 13 09:35:18 UTC 2007 x86_64 x86_64 x86_64 GNU/Linux; SUSE Linux Enterprise Server 10 (x86_64) VERSION = 10; 2x dual core Intel(R) Xeon(TM) CPU 3.40GHz; 4 GB Mem
• Assignee: Jochen Theodorou
• Reporter: Tom Gissel
• Created: 16/Apr/08 12:03
• Updated: 22/Apr/08 06:17
• Resolved: 21/Apr/08 12:04

Description

About 15 min into a ProjectZero SVT, semi-heavy load, test we start seeing null pointers arising. We have seen this on both 1.5.4 and 1.5.5.

Here is the ProjectZero bug: http://www.projectzero.org/bugzilla/show_bug.cgi?id=4471 with attachements

I looked into the problem a bit and it seems like CachedMethod.find(Method method) is returning null. The return value of CachedMethod.find(Method method) is not checked, passed to MetaClassImpl.findMethod(CachedMethod aMethod) where aMethod.getName() is called. This throws a nullpointer because aMethod is null.