2 files changed, 16 insertions, 0 deletions
diff --git a/test/files/neg/bug1623.check b/test/files/neg/bug1623.check
new file mode 100644
index 0000000000..cfc2b533d4
--- /dev/null
+++ b/test/files/neg/bug1623.check
@@ -0,0 +1,4 @@
+bug1623.scala:11: error: class BImpl cannot be instantiated because it does not conform to its self-type test.BImpl with test.A
+  val b = new BImpl
+          ^
+one error found
diff --git a/test/files/neg/bug1623.scala b/test/files/neg/bug1623.scala
new file mode 100644
index 0000000000..d98670a681
--- /dev/null
+++ b/test/files/neg/bug1623.scala
@@ -0,0 +1,12 @@
+package test
+
+trait A
+trait B
+
+class BImpl extends B {
+  this: A =>
+}
+
+object Test2 extends Application {
+  val b = new BImpl
+}
+\ No newline at end of file