closes #3691.

TODO: clean this up, introduce datatypes to denote kinds, split
checkKindBounds into kind inference and subkind checking

review by odersky

2 files changed, 27 insertions, 0 deletions

diff --git a/test/files/neg/t3691.check b/test/files/neg/t3691.check
new file mode 100644
index 0000000000..1b548cc84d
--- /dev/null
+++ b/test/files/neg/t3691.check
@@ -0,0 +1,16 @@
+t3691.scala:4: error: type mismatch;
+ found   : java.lang.Object with Test.A[String]
+ required: AnyRef{type A[x]}
+ val b = (new A[String]{}): { type A[x] } // not ok
+          ^
+t3691.scala:5: error: type mismatch;
+ found   : java.lang.Object with Test.A[String]
+ required: AnyRef{type A}
+ val c = (new A[String]{}): { type A } // not ok
+          ^
+t3691.scala:7: error: type mismatch;
+ found   : java.lang.Object{type A = String}
+ required: AnyRef{type A[X]}
+ val x = (new { type A = String }): { type A[X] } // not ok
+          ^
+three errors found
diff --git a/test/files/neg/t3691.scala b/test/files/neg/t3691.scala
new file mode 100644
index 0000000000..69e8bef630
--- /dev/null
+++ b/test/files/neg/t3691.scala
@@ -0,0 +1,11 @@
+object Test {
+ trait A[X] { type A[x <: X] = x }
+ val a = (new A[String]{}): { type A[x <: String] } // ok
+ val b = (new A[String]{}): { type A[x] } // not ok
+ val c = (new A[String]{}): { type A } // not ok
+
+ val x = (new { type A = String }): { type A[X] } // not ok
+//a: AnyRef{type A[X]}
+
+  identity[x.A[Any]] _
+}
\ No newline at end of file