1 files changed, 15 insertions, 0 deletions
diff --git a/test/fixedbugs/issue23116.go b/test/fixedbugs/issue23116.go
new file mode 100644
index 0000000..1737fee
--- /dev/null
+++ b/test/fixedbugs/issue23116.go
@@ -0,0 +1,15 @@
+// errorcheck
+
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package p
+
+func f(x interface{}) {
+	switch x.(type) {
+	}
+
+	switch t := x.(type) { // ERROR "declared and not used"
+	}
+}