3 files changed, 62 insertions, 12 deletions
diff --git a/test/interface/fake.go b/test/interface/fake.go
index 5cf3be052..de8505d8d 100644
--- a/test/interface/fake.go
+++ b/test/interface/fake.go
@@ -46,34 +46,34 @@ func main() {
 	x.t = add("abc", "def")
 	x.u = 1
 	x.v = 2
-	x.w = 1<<28
-	x.x = 2<<28
+	x.w = 1 << 28
+	x.x = 2 << 28
 	x.y = 0x12345678
 	x.z = x.y
 
 	// check mem and string
 	v := reflect.NewValue(x)
-	i := v.(*reflect.StructValue).Field(0)
-	j := v.(*reflect.StructValue).Field(1)
+	i := v.Field(0)
+	j := v.Field(1)
 	assert(i.Interface() == j.Interface())
 
-	s := v.(*reflect.StructValue).Field(2)
-	t := v.(*reflect.StructValue).Field(3)
+	s := v.Field(2)
+	t := v.Field(3)
 	assert(s.Interface() == t.Interface())
 
 	// make sure different values are different.
 	// make sure whole word is being compared,
 	// not just a single byte.
-	i = v.(*reflect.StructValue).Field(4)
-	j = v.(*reflect.StructValue).Field(5)
+	i = v.Field(4)
+	j = v.Field(5)
 	assert(i.Interface() != j.Interface())
 
-	i = v.(*reflect.StructValue).Field(6)
-	j = v.(*reflect.StructValue).Field(7)
+	i = v.Field(6)
+	j = v.Field(7)
 	assert(i.Interface() != j.Interface())
 
-	i = v.(*reflect.StructValue).Field(8)
-	j = v.(*reflect.StructValue).Field(9)
+	i = v.Field(8)
+	j = v.Field(9)
 	assert(i.Interface() == j.Interface())
 }
 
diff --git a/test/interface/private.go b/test/interface/private.go
new file mode 100644
index 000000000..37890c923
--- /dev/null
+++ b/test/interface/private.go
@@ -0,0 +1,32 @@
+// $G $D/${F}1.go && errchk $G $D/$F.go
+
+// Copyright 2011 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
+
+import "./private1"
+
+type Exported interface {
+	private()
+}
+
+type Implementation struct{}
+
+func (p *Implementation) private() {}
+
+func main() {
+	var x Exported
+	x = new(Implementation)
+	x.private()
+
+	var px p.Exported
+	px = p.X
+
+	px.private()			// ERROR "private"
+
+	px = new(Implementation)	// ERROR "private"
+
+	x = px				// ERROR "private"
+}
diff --git a/test/interface/private1.go b/test/interface/private1.go
new file mode 100644
index 000000000..3173fbef4
--- /dev/null
+++ b/test/interface/private1.go
@@ -0,0 +1,18 @@
+// true  # used by private.go
+
+// Copyright 2011 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
+
+type Exported interface {
+	private()
+}
+
+type Implementation struct{}
+
+func (p *Implementation) private() {}
+
+var X = new(Implementation)
+