1 files changed, 4 insertions, 0 deletions
diff --git a/test/pending/pos/t4787.scala b/test/pending/pos/t4787.scala
new file mode 100644
index 0000000000..cf3fe93c50
--- /dev/null
+++ b/test/pending/pos/t4787.scala
@@ -0,0 +1,4 @@
+trait MatrixImpl[@specialized A, @specialized B] {
+  def mapTo[ A2,  B2, That <: MatrixImpl[A2, B2]](that: That)(f: A => A2) {
+  }
+}