1 files changed, 21 insertions, 0 deletions
diff --git a/test/files/run/trait_fields_final.scala b/test/files/run/trait_fields_final.scala
new file mode 100644
index 0000000000..8b32e5b47d
--- /dev/null
+++ b/test/files/run/trait_fields_final.scala
@@ -0,0 +1,21 @@
+// TODO: clarify meaning of final in traits
+// In the new compiler, there's no final modifier after mixin for `meh`'s setter,
+// whereas 2.12.0-M3 makes meh's trait setter final.
+// NOTE: bytecode is identical, but the scalasignature is different
+trait Foo { self: Meh =>
+  def bar(x: String) = x == "a"
+  private final val meh = bar("a")
+}
+
+abstract class Meh extends Foo
+
+object Test {
+  def main(args: Array[String]): Unit = {
+    val setter = classOf[Meh].getDeclaredMethod("Foo$_setter_$Foo$$meh_$eq", java.lang.Boolean.TYPE)
+    val getter = classOf[Meh].getDeclaredMethod("Foo$$meh")
+    import java.lang.reflect.Modifier._
+    assert(isFinal(setter.getModifiers), setter)
+    assert(isFinal(getter.getModifiers), getter)
+  }
+
+}