Mattias Reichel created GROOVY-11736: ----------------------------------------
Summary: Compile error in Groovy 5 Key: GROOVY-11736 URL: https://issues.apache.org/jira/browse/GROOVY-11736 Project: Groovy Issue Type: Bug Affects Versions: 5.0.0-rc-1 Reporter: Mattias Reichel This class hierarchy compiles successfully with Groovy 4.0.28. (It is used in the Grails codebase) {code:java} class A implements Collection { @Delegate final Collection target A(Collection target) { this.target = target } } class B extends A implements Set { @Delegate Set target B(Set target) { super(target) this.target = target } }{code} {code:java} 10: The interface Collection cannot be implemented more than once with different arguments: java.util.Collection<java.lang.Object> and java.util.Collection . At [10:1] @ line 10, column 1. class B extends A implements Set { ^1 error{code} -- This message was sent by Atlassian Jira (v8.20.10#820010)