diff --git a/test/fixedbugs/issue20682.dir/p.go b/test/fixedbugs/issue20682.dir/p.go
new file mode 100644
index 0000000000..fc37136d90
--- /dev/null
+++ b/test/fixedbugs/issue20682.dir/p.go
@@ -0,0 +1,13 @@
+// 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
+
+import "strings"
+
+type T struct{}
+
+func (T) M() {
+	strings.HasPrefix("", "")
+}
diff --git a/test/fixedbugs/issue20682.dir/q.go b/test/fixedbugs/issue20682.dir/q.go
new file mode 100644
index 0000000000..9554569de0
--- /dev/null
+++ b/test/fixedbugs/issue20682.dir/q.go
@@ -0,0 +1,13 @@
+// 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 q
+
+import "./p"
+
+type T struct{}
+
+func (T) M() interface{} {
+	return &p.T{}
+}
diff --git a/test/fixedbugs/issue20682.dir/r.go b/test/fixedbugs/issue20682.dir/r.go
new file mode 100644
index 0000000000..73dfe1b3af
--- /dev/null
+++ b/test/fixedbugs/issue20682.dir/r.go
@@ -0,0 +1,11 @@
+// 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 r
+
+import "./q"
+
+type T struct {
+	q.T
+}
diff --git a/test/fixedbugs/issue20682.go b/test/fixedbugs/issue20682.go
new file mode 100644
index 0000000000..8000a5224f
--- /dev/null
+++ b/test/fixedbugs/issue20682.go
@@ -0,0 +1,7 @@
+// compiledir
+
+// 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 ignored