diff --git a/tests/neg-custom-args/fatal-warnings/i4674.scala b/tests/neg-custom-args/fatal-warnings/i4674.scala
new file mode 100644
index 000000000000..6595ee3f3ec2
--- /dev/null
+++ b/tests/neg-custom-args/fatal-warnings/i4674.scala
@@ -0,0 +1,8 @@
+class Test {
+  def test(x: String) = {
+    x.foreach {
+      case 's' => println("s")
+      case c: Char => println(c) // error: type test always succeeds
+    }
+  }
+}