[GROOVY-7361] VerifyError when private variable is used in synchronized block

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.4.2
• Fix Version/s: 2.4.3
• Component/s: Static compilation
• Assignee: Cédric Champeau
• Reporter: Cédric Champeau
• Created: 20/Mar/15 10:22
• Updated: 31/Mar/15 06:08
• Resolved: 20/Mar/15 16:39

Description

In the following code, synchronizing on the private final field map inside a closure causes a VerifyError. Synchronizing on a protected or public field fixes the problem.

class TaskManager {
    private final Map<Long, String> map = [1L:'a',2L:'b']
    void doh() {
        def list = [1L]
        list.each {
            synchronized (map) {
                map.remove(it)
            }
        }
    }
}
new TaskManager().doh()