1 files changed, 11 insertions, 0 deletions
diff --git a/test/fixedbugs/issue20813.go b/test/fixedbugs/issue20813.go
new file mode 100644
index 0000000..b147a89
--- /dev/null
+++ b/test/fixedbugs/issue20813.go
@@ -0,0 +1,11 @@
+// errorcheck
+
+// Copyright 2017 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() {
+	1 = 2 // ERROR "cannot assign to 1|invalid left hand side"
+}