[GROOVY-4952] VerifyError - Virtual method call from a static context

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.8.0, 1.8.1
• Fix Version/s: 1.8.2, 1.9-beta-3
• Component/s: bytecode, Compiler
• Environment: Mac - JDK 1.6.0_22
• Assignee: Jochen Theodorou
• Reporter: Jason Griffith
• Created: 28/Jul/11 19:42
• Updated: 29/Aug/11 14:05
• Resolved: 29/Aug/11 14:05

Description

Failing to put a public accessor on the 'name' field of the attached test object causes an error in the bytecode.

The exception is:
<error message="(class: com/peersaver/model/Breaking, method: <clinit> signature: ()V) Incompatible object argument for function call" type="java.lang.VerifyError">java.lang.VerifyError: (class: com/peersaver/model/Breaking, method: <clinit> signature: ()V) Incompatible object argument for function call
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:169)
at com.peersaver.model.BreakingTest.class$(BreakingTest.groovy)
at com.peersaver.model.BreakingTest.$get$$class$com$peersaver$model$Breaking(BreakingTest.groovy)
at com.peersaver.model.BreakingTest.testBreaking(BreakingTest.groovy:23)
</error>

The email conversation with details is here:
http://groovy.329449.n5.nabble.com/VerifyError-when-upgrading-to-Groovy-1-8-1-clinit-problem-around-getter-generation-td4640586.html

The relevant bit, again quoting BlackDragon:
(in the <clinit> bytecode)
"> ALOAD 0
> INVOKEVIRTUAL Quiz.getName() : String
> INVOKEINTERFACE CallSite.call(Object,Object) : Object

it is a pretty bad idea to do a virtual method call from a static
context. Looks like that information is missed on "