1 files changed, 21 insertions, 0 deletions
diff --git a/test/fixedbugs/issue47928.go b/test/fixedbugs/issue47928.go
new file mode 100644
index 0000000000..3bc291dd3f
--- /dev/null
+++ b/test/fixedbugs/issue47928.go
@@ -0,0 +1,21 @@
+// run -goexperiment fieldtrack
+
+// Copyright 2021 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 main
+
+func main() {
+	var i interface{} = new(T)
+	if _, ok := i.(interface{ Bad() }); ok {
+		panic("FAIL")
+	}
+}
+
+type T struct{ U }
+
+type U struct{}
+
+//go:nointerface
+func (*U) Bad() {}