1 files changed, 43 insertions, 0 deletions
diff --git a/tests/untried/neg-with-implicits/t2316.scala b/tests/untried/neg-with-implicits/t2316.scala
new file mode 100644
index 000000000..bf4bb0ec6
--- /dev/null
+++ b/tests/untried/neg-with-implicits/t2316.scala
@@ -0,0 +1,43 @@
+object test {
+  case class T1(val source: String)
+
+
+  object T1 {
+    implicit def T1FromT2(implicit t2: T2): T1 = T1("implicit def T1FromT2")
+    implicit def T1FromT3(implicit t3: T3): T1 = T1("implicit def T1FromT3")
+  }
+
+  trait T2 {
+  }
+
+  object T2 {
+    implicit val t2: T2 = new T2 {}
+  }
+
+  trait T3
+
+  def requireT1(implicit t1: T1) = t1
+
+  {
+      val t1 = requireT1
+      assert(t1.source == "implicit def T1FromT2")
+  }
+
+  {
+      implicit def t3: T3 = new T3 {}
+      val t1 = requireT1
+      assert(t1.source == "implicit def T1FromT2")
+
+      // Expected a compile error here, but because T1.T1FromT2(T2.t2) was cached as a non-local implicit
+      // expression for type T1, this is not checked!
+      //
+      // (fragment of implicit-cache-error2.scala):26: error: ambiguous implicit values:
+      // both method T1FromT3 in object T1 of type (implicit t3: this.T3)this.T1
+      // and method T1FromT2 in object T1 of type (implicit t2: this.T2)this.T1
+      // match expected type this.T1
+      //    val t1 = requireT1
+      //              ^
+      // one error found
+
+  }
+}