1 files changed, 17 insertions, 0 deletions
diff --git a/test/files/neg/t2421b.scala b/test/files/neg/t2421b.scala
new file mode 100644
index 0000000000..d8159a8c37
--- /dev/null
+++ b/test/files/neg/t2421b.scala
@@ -0,0 +1,17 @@
+object Test {
+  class A
+  class B
+  class C
+  class F[X]
+
+  def f(implicit aa: F[A]) = println(aa)
+
+  // implicit def a : F[A] = new F[A]()
+  implicit def b[X <: B] = new F[X]()
+
+  f
+}
+
+/* bug:
+error: type arguments [Test2.A] do not conform to method b's type parameter bounds [X <: Test2.B]
+*/
+\ No newline at end of file