VerifyError at CompileStatic

import groovy.transform.CompileStatic

@CompileStatic
class Test {
    static void test() {
        def map = [:]
        println(map[0] ?: (map[0] = 1))
    }
}

Test.test()

Caught: java.lang.VerifyError: (class: Test, method: test signature: ()V) Inconsistent stack height 3 != 2
java.lang.VerifyError: (class: Test, method: test signature: ()V) Inconsistent stack height 3 != 2
        at test.run(test.groovy:11)