[GROOVY-7032] Traits don't like generic arguments

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.3.6
• Fix Version/s: 2.3.7
• Component/s: Compiler
• Assignee: Cédric Champeau
• Reporter: Dimitar Dimitrov
• Created: 20/Aug/14 08:34
• Updated: 23/Dec/14 19:45
• Resolved: 22/Dec/14 04:45

Description

This compiles:

trait Foo { public <T> T  bar(def a) { a } }
class Bar implements Foo {}

This doesn't:

trait Foo { public <T> T  bar(T a) { a } }
class Bar implements Foo {}

But this does:

trait Foo<X> { public <T> T  bar(T a) { a } }
class Bar implements Foo {}

But this doesn't:

trait Foo<X> { public <T> T  bar(T a) { a } }
class Bar implements Foo<String> {}

This does, though it doesn't make sense:

trait Foo<X> { public <T> T  bar(X a) { a } }
class Bar implements Foo<String> {}