Merge pull request #3212 from retronym/ticket/8023

SI-8023 Fix symbol-completion-order bug of type var patterns

2 files changed, 24 insertions, 0 deletions

diff --git a/test/files/pos/t8023.scala b/test/files/pos/t8023.scala
new file mode 100644
index 0000000000..86824084ed
--- /dev/null
+++ b/test/files/pos/t8023.scala
@@ -0,0 +1,22 @@
+import language._
+
+
+object Test {
+  def foo = (null: Any) match {
+    case a: A[k] =>
+      // error: kinds of the type arguments (k) do not conform to the 
+      // expected kinds of the type parameters (type K) in class B.
+      new B[k]()
+  }
+}
+
+class A[K[L[_]]]
+
+class B[K[M[_]]]
+
+
+object Test2 {
+  def foo = (null: Any) match {
+    case a: A[k] => new B[k]() // this one worked before as the info of `A` was complete
+  }
+}
diff --git a/test/files/pos/t8023b.scala b/test/files/pos/t8023b.scala
new file mode 100644
index 0000000000..94c9b2f8d2
--- /dev/null
+++ b/test/files/pos/t8023b.scala
@@ -0,0 +1,2 @@
+// this fails with naive attempts to fix SI-8023
+trait T[A <: T[A]]