3 files changed, 31 insertions, 1 deletions
diff --git a/test/files/neg/t6335.check b/test/files/neg/t6335.check
new file mode 100644
index 0000000000..1727a05eb2
--- /dev/null
+++ b/test/files/neg/t6335.check
@@ -0,0 +1,9 @@
+t6335.scala:6: error: method Z is defined twice
+  conflicting symbols both originated in file 't6335.scala'
+  implicit class Z[A](val i: A) { def zz = i }
+                 ^
+t6335.scala:3: error: method X is defined twice
+  conflicting symbols both originated in file 't6335.scala'
+  implicit class X(val x: Int) { def xx = x }
+                 ^
+two errors found
diff --git a/test/files/neg/t6335.scala b/test/files/neg/t6335.scala
new file mode 100644
index 0000000000..5c41e81ef5
--- /dev/null
+++ b/test/files/neg/t6335.scala
@@ -0,0 +1,7 @@
+object ImplicitClass {
+  def X(i: Int) {}
+  implicit class X(val x: Int) { def xx = x }
+
+  def Z[A](i: A) {}
+  implicit class Z[A](val i: A) { def zz = i }
+}
+\ No newline at end of file
diff --git a/test/files/pos/t6335.scala b/test/files/pos/t6335.scala
index a39c4f27f5..50e34092d1 100644
--- a/test/files/pos/t6335.scala
+++ b/test/files/pos/t6335.scala
@@ -1,11 +1,25 @@
-object E {
+object E extends Z {
   def X = 3
   implicit class X(val i: Int) {
     def xx = i
   }
+
+  def Y(a: Any) = 0
+  object Y
+  implicit class Y(val i: String) { def yy = i }
+
+  implicit class Z(val i: Boolean) { def zz = i }
+}
+
+trait Z {
+	def Z = 0
 }
 
 object Test {
 	import E._
 	0.xx
+
+	"".yy
+
+  true.zz
 }