[GROOVY-10196] "Cannot find matching method" with specific class hierarchy and static compilation

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 3.0.8
• Fix Version/s: 3.0.9
• Component/s: Static compilation
• Assignee: Eric Milles
• Reporter: Marcin Zajaczkowski
• Created: 11/Aug/21 20:00
• Updated: 03/Feb/22 22:47
• Resolved: 17/Aug/21 16:01

Description

Groovy static compilation reports:

 

> Task :compileTestGroovy
startup failed:
/home/.../ReproCannotFindMethod.groovy: 11: [Static type checking] - Cannot find matching method com.example.repro.LinkedMultiValueMap3#add(java.lang.String, java.lang.String). Please check if the declared type is correct and if the method exists.
 @ line 11, column 9.
 map.add("foo", "bar")
 ^
1 error

in some weird, but still valid hierarchy of classes:

 

@CompileStatic
class ReproCannotFindMethod {
  static ups() {
    LinkedMultiValueMap3<String, String> map = new LinkedMultiValueMap3<>() //fails on add()
    // MultiValueMapAdapter3<String, String> map = new MultiValueMapAdapter3<>() //works fine with add()
    map.add("foo", "bar")
  }
}

interface Map3<K, V> {
}

interface MultiValueMap3<K, V> extends Map3<K, List<V>> {
  void add(K key, V value);
}

class MultiValueMapAdapter3<K, V> implements MultiValueMap3<K, V> {
  @Override
  void add(K key, V value) {
  }
}

class LinkedMultiValueMap3<K, V> extends MultiValueMapAdapter3<K, V> {
}

 

It is definitely a corner case, so it might not be worth to fix it, but I report it as I've encountered it in a class hierarchy available related to LinkedMultiValueMap in Spring Framework (classes originally in Java).

Reproduced with Groovy 3.0.8