[jira] [Created] (GROOVY-7774) Collection addAll fails CompileStatic type checking when adding a collection of subtypes

["Darren Hurt (JIRA)" <ji...@apache.org>]

Darren Hurt created GROOVY-7774:
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             Summary: Collection addAll fails CompileStatic type checking when adding a collection of subtypes
                 Key: GROOVY-7774
                 URL: https://issues.apache.org/jira/browse/GROOVY-7774
             Project: Groovy
          Issue Type: Bug
          Components: groovy-jdk
    Affects Versions: 2.4.3
         Environment: Windows, Java 8.
            Reporter: Darren Hurt


Suppose X is an interface and Y an interface such that Y extends X
The following code throws a compilation error (the outer class is annotated as @CompileStatic).

Set<X> set = new HashSet<X>()
Set<Y> toAdd = ......
set.addAll(toAdd)

However, the following works, which to me is inconsistent:

Set<X> set = new HashSet<X>()
Set<Y> toAdd = ......
for(Y y in toAdd)
{
set.add(y)
}






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