[GROOVY-10120] STC: Guava Multimap#asMap bridge method

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.5.0, 3.0.5
• Fix Version/s: 4.0.5, 2.5.19, 3.0.13
• Assignee: Eric Milles
• Reporter: Eric Milles
• Created: 01/Jun/21 16:12
• Updated: 30/Apr/23 14:23
• Resolved: 12/Aug/22 18:34

Description

Consider the following:

@Grab('com.google.guava:guava:30.1.1-jre')
import com.google.common.collect.*

@groovy.transform.TypeChecked
void test() {
    ListMultimap<String, Integer> mmap = ArrayListMultimap.create()
    Map<String, Set<Integer>> map = mmap.asMap() // no STC error
    // ...
}

Due to the presence of multiple bridge methods in ArrayListMultimap, generics checking of asMap() is currently lacking. The following are all bridge methods in ArrayListMultimap (30.1.1):

asMap()
equals(Object)
put(Object,Object)
replaceValues(Object,Iterable)
removeAll(Object)
get(Object)
forEach(BiConsumer)
entries()
values()
clear()
containsKey(Object)
size()
createCollection() // non-synthetic returns List not Collection
toString()
hashCode()
keys()
keySet()
putAll(Multimap)
putAll(Object,Iterable)
remove(Object,Object)
containsEntry(Object,Object)
containsValue(Object)
isEmpty()

Issue Links

• is a clone of: GROOVY-8638 CompileStatic fails with Guava Multimap#asMap
• relates to: GROOVY-10109 IllegalAccessError with package-access base class
• relates to: GROOVY-11012 Wrong type is inferred when calling method defined in the parent class
• relates to: GROOVY-11035 Inferred type is Object when having a complex inheritance chain of interfaces