Merge pull request #760 from dotty-staging/mixin-fixes

Fixes to scala2 Mixin

1 files changed, 23 insertions, 0 deletions

diff --git a/tests/run/scala2mixins.scala b/tests/run/scala2mixins.scala
new file mode 100644
index 000000000..059e156f3
--- /dev/null
+++ b/tests/run/scala2mixins.scala
@@ -0,0 +1,23 @@
+import scala.collection.IndexedSeqOptimized
+import scala.collection.mutable.Builder
+
+object Test {
+  class Name extends Seq[Int]
+    with IndexedSeqOptimized[Int, Name] {
+    val underlying = 0 to 10
+    def length: Int = underlying.length
+
+    def apply(idx: Int): Int = underlying(idx)
+
+    override protected[this] def newBuilder: Builder[Int, Name] = ???
+
+    override def seq = toCollection(this)
+
+  }
+  def main(args: Array[String]): Unit = {
+    val n = new Name
+    // need to make sure that super accessors were emitted
+    // ends with calls super.endsWith if argument is not an IndexedSeq
+    assert(n.endsWith(10 :: Nil))
+  }
+}