diff --git a/test/fixedbugs/bug507.dir/a.go b/test/fixedbugs/bug507.dir/a.go
new file mode 100644
index 0000000000..0929adcfb3
--- /dev/null
+++ b/test/fixedbugs/bug507.dir/a.go
@@ -0,0 +1,13 @@
+// Copyright 2020 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 a
+
+type I interface {
+	M()
+}
+
+type S struct {
+	I I
+}
diff --git a/test/fixedbugs/bug507.dir/b.go b/test/fixedbugs/bug507.dir/b.go
new file mode 100644
index 0000000000..bddce2dd83
--- /dev/null
+++ b/test/fixedbugs/bug507.dir/b.go
@@ -0,0 +1,9 @@
+// Copyright 2020 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 b
+
+import . "./a"
+
+var V2 I
diff --git a/test/fixedbugs/bug507.dir/c.go b/test/fixedbugs/bug507.dir/c.go
new file mode 100644
index 0000000000..e67f0fd74e
--- /dev/null
+++ b/test/fixedbugs/bug507.dir/c.go
@@ -0,0 +1,9 @@
+// Copyright 2020 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 b
+
+import "./a"
+
+var V1 = a.S{I: nil}
diff --git a/test/fixedbugs/bug507.go b/test/fixedbugs/bug507.go
new file mode 100644
index 0000000000..2d7aa59732
--- /dev/null
+++ b/test/fixedbugs/bug507.go
@@ -0,0 +1,9 @@
+// compiledir
+
+// Copyright 2020 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.
+
+// Gccgo mishandled a combination of normal import and dot import.
+
+package ignored