diff --git a/test/fixedbugs/issue34520.go b/test/fixedbugs/issue34520.go
new file mode 100644
index 0000000000..d92d4ccbc5
--- /dev/null
+++ b/test/fixedbugs/issue34520.go
@@ -0,0 +1,12 @@
+// compile
+
+// Copyright 2019 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() {
+	for true {
+	}
+}