[GROOVY-9974] @CompileStatic with Method References

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.0.6, 3.0.7
• Fix Version/s: 3.0.8, 4.0.0-alpha-3, 2.5.16
• Component/s: Static compilation
• Environment: JDK 11
• Assignee: Eric Milles
• Reporter: Michael Spahn
• Created: 09/Mar/21 18:39
• Updated: 03/Feb/22 18:44
• Resolved: 15/Mar/21 13:36

Description

The following code worked fine until 3.0.5:

@Test
@CompileStatic
void methodReference() {
    def list = ['']
    list.removeIf(String::isBlank)

    assert list.empty
}

Using version 3.0.6/3.0.7 this no longer compiles:

Groovyc: [Static type checking] - Cannot call java.util.List <java.lang.String>#removeIf(java.util.function.Predicate <? super java.lang.String>) with arguments [groovy.lang.Closure <java.lang.Boolean>]