Update reflectwalk vendor to fix State.DeepCopy

The real reasoning for this can be found in #9, #10, and #11. All
these vendor updates aim to fix that issue, with minor adjustments

terraform/state_test.go

@@ -3,6 +3,7 @@ package terraform
 import (
 	"bytes"
 	"encoding/json"
+	"fmt"
 	"reflect"
 	"strings"
 	"testing"
@@ -272,11 +273,13 @@ func TestStateDeepCopy(t *testing.T) {
 	}
 
 	for i, tc := range cases {
-		actual := tc.F(tc.One.DeepCopy())
-		expected := tc.F(tc.Two)
-		if !reflect.DeepEqual(actual, expected) {
-			t.Fatalf("Bad: %d\n\n%s\n\n%s", i, actual, expected)
-		}
+		t.Run(fmt.Sprintf("copy-%d", i), func(t *testing.T) {
+			actual := tc.F(tc.One.DeepCopy())
+			expected := tc.F(tc.Two)
+			if !reflect.DeepEqual(actual, expected) {
+				t.Fatalf("Bad: %d\n\n%s\n\n%s", i, actual, expected)
+			}
+		})
 	}
 }
 

vendor/github.com/mitchellh/reflectwalk/reflectwalk.go

@@ -76,19 +76,27 @@ func Walk(data, walker interface{}) (err error) {
 }
 
 func walk(v reflect.Value, w interface{}) (err error) {
-	// We preserve the original value here because if it is an interface
-	// type, we want to pass that directly into the walkPrimitive, so that
-	// we can set it.
-	originalV := v
-	if v.Kind() == reflect.Interface {
-		v = v.Elem()
-	}
-
 	// Determine if we're receiving a pointer and if so notify the walker.
+	// The logic here is convoluted but very important (tests will fail if
+	// almost any part is changed). I will try to explain here.
+	//
+	// First, we check if the value is an interface, if so, we really need
+	// to check the interface's VALUE to see whether it is a pointer (pointers
+	// to interfaces are not allowed).
+	//
+	// Check whether the value is then an interface. If so, then set pointer
+	// to true to notify the user.
+	//
+	// At this time, we also set "v" to be the dereferenced value. This is
+	// because once we've unwrapped the pointer we want to use that value.
 	pointer := false
-	if v.Kind() == reflect.Ptr {
+	pointerV := v
+	if pointerV.Kind() == reflect.Interface {
+		pointerV = pointerV.Elem()
+	}
+	if pointerV.Kind() == reflect.Ptr {
 		pointer = true
-		v = reflect.Indirect(v)
+		v = reflect.Indirect(pointerV)
 	}
 	if pw, ok := w.(PointerWalker); ok {
 		if err = pw.PointerEnter(pointer); err != nil {
@@ -104,6 +112,14 @@ func walk(v reflect.Value, w interface{}) (err error) {
 		}()
 	}
 
+	// We preserve the original value here because if it is an interface
+	// type, we want to pass that directly into the walkPrimitive, so that
+	// we can set it.
+	originalV := v
+	if v.Kind() == reflect.Interface {
+		v = v.Elem()
+	}
+
 	k := v.Kind()
 	if k >= reflect.Int && k <= reflect.Complex128 {
 		k = reflect.Int

vendor/vendor.json

@@ -1474,8 +1474,8 @@
 		{
 			"checksumSHA1": "EDAtec3XSbTjw6gWG+NNScows9M=",
 			"path": "github.com/mitchellh/copystructure",
-			"revision": "8f3c396a26dadccbd29ee24c76c89166249cc16f",
-			"revisionTime": "2016-09-27T21:34:29Z"
+			"revision": "49a4444999946bce1882f9db0eb3ba0a44ed1fbb",
+			"revisionTime": "2016-09-28T02:49:35Z"
 		},
 		{
 			"path": "github.com/mitchellh/go-homedir",
@@ -1507,10 +1507,10 @@
 			"revision": "6e6954073784f7ee67b28f2d22749d6479151ed7"
 		},
 		{
-			"checksumSHA1": "5fFCVadmQVH6jqnB6Zd739s28QM=",
+			"checksumSHA1": "kXh6sdGViiRK0REpIWydJvpsyY0=",
 			"path": "github.com/mitchellh/reflectwalk",
-			"revision": "84fc159ad78a797bb094a1e0c364392d837e1cd8",
-			"revisionTime": "2016-09-28T02:14:22Z"
+			"revision": "0c9480f65513be815a88d6076a3d8d95d4274236",
+			"revisionTime": "2016-09-28T02:49:03Z"
 		},
 		{
 			"checksumSHA1": "/iig5lYSPCL3C8J7e4nTAevYNDE=",