diff --git a/Makefile b/Makefile
index 80b6a17..a1421d8 100644
--- a/Makefile
+++ b/Makefile
@@ -52,3 +52,4 @@
 	make -C protoc-gen-go/testdata regenerate
 	make -C proto/testdata regenerate
 	make -C jsonpb/jsonpb_test_proto regenerate
+	make -C _conformance regenerate
diff --git a/_conformance/Makefile b/_conformance/Makefile
new file mode 100644
index 0000000..89800e2
--- /dev/null
+++ b/_conformance/Makefile
@@ -0,0 +1,33 @@
+# Go support for Protocol Buffers - Google's data interchange format
+#
+# Copyright 2016 The Go Authors.  All rights reserved.
+# https://github.com/golang/protobuf
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+regenerate:
+	protoc --go_out=Mgoogle/protobuf/any.proto=github.com/golang/protobuf/ptypes/any,Mgoogle/protobuf/duration.proto=github.com/golang/protobuf/ptypes/duration,Mgoogle/protobuf/struct.proto=github.com/golang/protobuf/ptypes/struct,Mgoogle/protobuf/timestamp.proto=github.com/golang/protobuf/ptypes/timestamp,Mgoogle/protobuf/wrappers.proto=github.com/golang/protobuf/ptypes/wrappers,Mgoogle/protobuf/field_mask.proto=google.golang.org/genproto/protobuf:. conformance_proto/conformance.proto
diff --git a/_conformance/_conformance b/_conformance/_conformance
new file mode 100755
index 0000000..169ef34
--- /dev/null
+++ b/_conformance/_conformance
Binary files differ
diff --git a/_conformance/conformance_proto/conformance.pb.go b/_conformance/conformance_proto/conformance.pb.go
new file mode 100644
index 0000000..2caf992
--- /dev/null
+++ b/_conformance/conformance_proto/conformance.pb.go
@@ -0,0 +1,1472 @@
+// Code generated by protoc-gen-go.
+// source: conformance_proto/conformance.proto
+// DO NOT EDIT!
+
+/*
+Package conformance is a generated protocol buffer package.
+
+It is generated from these files:
+	conformance_proto/conformance.proto
+
+It has these top-level messages:
+	ConformanceRequest
+	ConformanceResponse
+	TestAllTypes
+	ForeignMessage
+*/
+package conformance
+
+import proto "github.com/golang/protobuf/proto"
+import fmt "fmt"
+import math "math"
+import google_protobuf "github.com/golang/protobuf/ptypes/any"
+import google_protobuf1 "github.com/golang/protobuf/ptypes/duration"
+import google_protobuf2 "google.golang.org/genproto/protobuf"
+import google_protobuf3 "github.com/golang/protobuf/ptypes/struct"
+import google_protobuf4 "github.com/golang/protobuf/ptypes/timestamp"
+import google_protobuf5 "github.com/golang/protobuf/ptypes/wrappers"
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package
+
+type WireFormat int32
+
+const (
+	WireFormat_UNSPECIFIED WireFormat = 0
+	WireFormat_PROTOBUF    WireFormat = 1
+	WireFormat_JSON        WireFormat = 2
+)
+
+var WireFormat_name = map[int32]string{
+	0: "UNSPECIFIED",
+	1: "PROTOBUF",
+	2: "JSON",
+}
+var WireFormat_value = map[string]int32{
+	"UNSPECIFIED": 0,
+	"PROTOBUF":    1,
+	"JSON":        2,
+}
+
+func (x WireFormat) String() string {
+	return proto.EnumName(WireFormat_name, int32(x))
+}
+func (WireFormat) EnumDescriptor() ([]byte, []int) { return fileDescriptor0, []int{0} }
+
+type ForeignEnum int32
+
+const (
+	ForeignEnum_FOREIGN_FOO ForeignEnum = 0
+	ForeignEnum_FOREIGN_BAR ForeignEnum = 1
+	ForeignEnum_FOREIGN_BAZ ForeignEnum = 2
+)
+
+var ForeignEnum_name = map[int32]string{
+	0: "FOREIGN_FOO",
+	1: "FOREIGN_BAR",
+	2: "FOREIGN_BAZ",
+}
+var ForeignEnum_value = map[string]int32{
+	"FOREIGN_FOO": 0,
+	"FOREIGN_BAR": 1,
+	"FOREIGN_BAZ": 2,
+}
+
+func (x ForeignEnum) String() string {
+	return proto.EnumName(ForeignEnum_name, int32(x))
+}
+func (ForeignEnum) EnumDescriptor() ([]byte, []int) { return fileDescriptor0, []int{1} }
+
+type TestAllTypes_NestedEnum int32
+
+const (
+	TestAllTypes_FOO TestAllTypes_NestedEnum = 0
+	TestAllTypes_BAR TestAllTypes_NestedEnum = 1
+	TestAllTypes_BAZ TestAllTypes_NestedEnum = 2
+	TestAllTypes_NEG TestAllTypes_NestedEnum = -1
+)
+
+var TestAllTypes_NestedEnum_name = map[int32]string{
+	0:  "FOO",
+	1:  "BAR",
+	2:  "BAZ",
+	-1: "NEG",
+}
+var TestAllTypes_NestedEnum_value = map[string]int32{
+	"FOO": 0,
+	"BAR": 1,
+	"BAZ": 2,
+	"NEG": -1,
+}
+
+func (x TestAllTypes_NestedEnum) String() string {
+	return proto.EnumName(TestAllTypes_NestedEnum_name, int32(x))
+}
+func (TestAllTypes_NestedEnum) EnumDescriptor() ([]byte, []int) { return fileDescriptor0, []int{2, 0} }
+
+// Represents a single test case's input.  The testee should:
+//
+//   1. parse this proto (which should always succeed)
+//   2. parse the protobuf or JSON payload in "payload" (which may fail)
+//   3. if the parse succeeded, serialize the message in the requested format.
+type ConformanceRequest struct {
+	// The payload (whether protobuf of JSON) is always for a TestAllTypes proto
+	// (see below).
+	//
+	// Types that are valid to be assigned to Payload:
+	//	*ConformanceRequest_ProtobufPayload
+	//	*ConformanceRequest_JsonPayload
+	Payload isConformanceRequest_Payload `protobuf_oneof:"payload"`
+	// Which format should the testee serialize its message to?
+	RequestedOutputFormat WireFormat `protobuf:"varint,3,opt,name=requested_output_format,json=requestedOutputFormat,enum=conformance.WireFormat" json:"requested_output_format,omitempty"`
+}
+
+func (m *ConformanceRequest) Reset()                    { *m = ConformanceRequest{} }
+func (m *ConformanceRequest) String() string            { return proto.CompactTextString(m) }
+func (*ConformanceRequest) ProtoMessage()               {}
+func (*ConformanceRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{0} }
+
+type isConformanceRequest_Payload interface {
+	isConformanceRequest_Payload()
+}
+
+type ConformanceRequest_ProtobufPayload struct {
+	ProtobufPayload []byte `protobuf:"bytes,1,opt,name=protobuf_payload,json=protobufPayload,proto3,oneof"`
+}
+type ConformanceRequest_JsonPayload struct {
+	JsonPayload string `protobuf:"bytes,2,opt,name=json_payload,json=jsonPayload,oneof"`
+}
+
+func (*ConformanceRequest_ProtobufPayload) isConformanceRequest_Payload() {}
+func (*ConformanceRequest_JsonPayload) isConformanceRequest_Payload()     {}
+
+func (m *ConformanceRequest) GetPayload() isConformanceRequest_Payload {
+	if m != nil {
+		return m.Payload
+	}
+	return nil
+}
+
+func (m *ConformanceRequest) GetProtobufPayload() []byte {
+	if x, ok := m.GetPayload().(*ConformanceRequest_ProtobufPayload); ok {
+		return x.ProtobufPayload
+	}
+	return nil
+}
+
+func (m *ConformanceRequest) GetJsonPayload() string {
+	if x, ok := m.GetPayload().(*ConformanceRequest_JsonPayload); ok {
+		return x.JsonPayload
+	}
+	return ""
+}
+
+// XXX_OneofFuncs is for the internal use of the proto package.
+func (*ConformanceRequest) XXX_OneofFuncs() (func(msg proto.Message, b *proto.Buffer) error, func(msg proto.Message, tag, wire int, b *proto.Buffer) (bool, error), func(msg proto.Message) (n int), []interface{}) {
+	return _ConformanceRequest_OneofMarshaler, _ConformanceRequest_OneofUnmarshaler, _ConformanceRequest_OneofSizer, []interface{}{
+		(*ConformanceRequest_ProtobufPayload)(nil),
+		(*ConformanceRequest_JsonPayload)(nil),
+	}
+}
+
+func _ConformanceRequest_OneofMarshaler(msg proto.Message, b *proto.Buffer) error {
+	m := msg.(*ConformanceRequest)
+	// payload
+	switch x := m.Payload.(type) {
+	case *ConformanceRequest_ProtobufPayload:
+		b.EncodeVarint(1<<3 | proto.WireBytes)
+		b.EncodeRawBytes(x.ProtobufPayload)
+	case *ConformanceRequest_JsonPayload:
+		b.EncodeVarint(2<<3 | proto.WireBytes)
+		b.EncodeStringBytes(x.JsonPayload)
+	case nil:
+	default:
+		return fmt.Errorf("ConformanceRequest.Payload has unexpected type %T", x)
+	}
+	return nil
+}
+
+func _ConformanceRequest_OneofUnmarshaler(msg proto.Message, tag, wire int, b *proto.Buffer) (bool, error) {
+	m := msg.(*ConformanceRequest)
+	switch tag {
+	case 1: // payload.protobuf_payload
+		if wire != proto.WireBytes {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeRawBytes(true)
+		m.Payload = &ConformanceRequest_ProtobufPayload{x}
+		return true, err
+	case 2: // payload.json_payload
+		if wire != proto.WireBytes {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeStringBytes()
+		m.Payload = &ConformanceRequest_JsonPayload{x}
+		return true, err
+	default:
+		return false, nil
+	}
+}
+
+func _ConformanceRequest_OneofSizer(msg proto.Message) (n int) {
+	m := msg.(*ConformanceRequest)
+	// payload
+	switch x := m.Payload.(type) {
+	case *ConformanceRequest_ProtobufPayload:
+		n += proto.SizeVarint(1<<3 | proto.WireBytes)
+		n += proto.SizeVarint(uint64(len(x.ProtobufPayload)))
+		n += len(x.ProtobufPayload)
+	case *ConformanceRequest_JsonPayload:
+		n += proto.SizeVarint(2<<3 | proto.WireBytes)
+		n += proto.SizeVarint(uint64(len(x.JsonPayload)))
+		n += len(x.JsonPayload)
+	case nil:
+	default:
+		panic(fmt.Sprintf("proto: unexpected type %T in oneof", x))
+	}
+	return n
+}
+
+// Represents a single test case's output.
+type ConformanceResponse struct {
+	// Types that are valid to be assigned to Result:
+	//	*ConformanceResponse_ParseError
+	//	*ConformanceResponse_SerializeError
+	//	*ConformanceResponse_RuntimeError
+	//	*ConformanceResponse_ProtobufPayload
+	//	*ConformanceResponse_JsonPayload
+	//	*ConformanceResponse_Skipped
+	Result isConformanceResponse_Result `protobuf_oneof:"result"`
+}
+
+func (m *ConformanceResponse) Reset()                    { *m = ConformanceResponse{} }
+func (m *ConformanceResponse) String() string            { return proto.CompactTextString(m) }
+func (*ConformanceResponse) ProtoMessage()               {}
+func (*ConformanceResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{1} }
+
+type isConformanceResponse_Result interface {
+	isConformanceResponse_Result()
+}
+
+type ConformanceResponse_ParseError struct {
+	ParseError string `protobuf:"bytes,1,opt,name=parse_error,json=parseError,oneof"`
+}
+type ConformanceResponse_SerializeError struct {
+	SerializeError string `protobuf:"bytes,6,opt,name=serialize_error,json=serializeError,oneof"`
+}
+type ConformanceResponse_RuntimeError struct {
+	RuntimeError string `protobuf:"bytes,2,opt,name=runtime_error,json=runtimeError,oneof"`
+}
+type ConformanceResponse_ProtobufPayload struct {
+	ProtobufPayload []byte `protobuf:"bytes,3,opt,name=protobuf_payload,json=protobufPayload,proto3,oneof"`
+}
+type ConformanceResponse_JsonPayload struct {
+	JsonPayload string `protobuf:"bytes,4,opt,name=json_payload,json=jsonPayload,oneof"`
+}
+type ConformanceResponse_Skipped struct {
+	Skipped string `protobuf:"bytes,5,opt,name=skipped,oneof"`
+}
+
+func (*ConformanceResponse_ParseError) isConformanceResponse_Result()      {}
+func (*ConformanceResponse_SerializeError) isConformanceResponse_Result()  {}
+func (*ConformanceResponse_RuntimeError) isConformanceResponse_Result()    {}
+func (*ConformanceResponse_ProtobufPayload) isConformanceResponse_Result() {}
+func (*ConformanceResponse_JsonPayload) isConformanceResponse_Result()     {}
+func (*ConformanceResponse_Skipped) isConformanceResponse_Result()         {}
+
+func (m *ConformanceResponse) GetResult() isConformanceResponse_Result {
+	if m != nil {
+		return m.Result
+	}
+	return nil
+}
+
+func (m *ConformanceResponse) GetParseError() string {
+	if x, ok := m.GetResult().(*ConformanceResponse_ParseError); ok {
+		return x.ParseError
+	}
+	return ""
+}
+
+func (m *ConformanceResponse) GetSerializeError() string {
+	if x, ok := m.GetResult().(*ConformanceResponse_SerializeError); ok {
+		return x.SerializeError
+	}
+	return ""
+}
+
+func (m *ConformanceResponse) GetRuntimeError() string {
+	if x, ok := m.GetResult().(*ConformanceResponse_RuntimeError); ok {
+		return x.RuntimeError
+	}
+	return ""
+}
+
+func (m *ConformanceResponse) GetProtobufPayload() []byte {
+	if x, ok := m.GetResult().(*ConformanceResponse_ProtobufPayload); ok {
+		return x.ProtobufPayload
+	}
+	return nil
+}
+
+func (m *ConformanceResponse) GetJsonPayload() string {
+	if x, ok := m.GetResult().(*ConformanceResponse_JsonPayload); ok {
+		return x.JsonPayload
+	}
+	return ""
+}
+
+func (m *ConformanceResponse) GetSkipped() string {
+	if x, ok := m.GetResult().(*ConformanceResponse_Skipped); ok {
+		return x.Skipped
+	}
+	return ""
+}
+
+// XXX_OneofFuncs is for the internal use of the proto package.
+func (*ConformanceResponse) XXX_OneofFuncs() (func(msg proto.Message, b *proto.Buffer) error, func(msg proto.Message, tag, wire int, b *proto.Buffer) (bool, error), func(msg proto.Message) (n int), []interface{}) {
+	return _ConformanceResponse_OneofMarshaler, _ConformanceResponse_OneofUnmarshaler, _ConformanceResponse_OneofSizer, []interface{}{
+		(*ConformanceResponse_ParseError)(nil),
+		(*ConformanceResponse_SerializeError)(nil),
+		(*ConformanceResponse_RuntimeError)(nil),
+		(*ConformanceResponse_ProtobufPayload)(nil),
+		(*ConformanceResponse_JsonPayload)(nil),
+		(*ConformanceResponse_Skipped)(nil),
+	}
+}
+
+func _ConformanceResponse_OneofMarshaler(msg proto.Message, b *proto.Buffer) error {
+	m := msg.(*ConformanceResponse)
+	// result
+	switch x := m.Result.(type) {
+	case *ConformanceResponse_ParseError:
+		b.EncodeVarint(1<<3 | proto.WireBytes)
+		b.EncodeStringBytes(x.ParseError)
+	case *ConformanceResponse_SerializeError:
+		b.EncodeVarint(6<<3 | proto.WireBytes)
+		b.EncodeStringBytes(x.SerializeError)
+	case *ConformanceResponse_RuntimeError:
+		b.EncodeVarint(2<<3 | proto.WireBytes)
+		b.EncodeStringBytes(x.RuntimeError)
+	case *ConformanceResponse_ProtobufPayload:
+		b.EncodeVarint(3<<3 | proto.WireBytes)
+		b.EncodeRawBytes(x.ProtobufPayload)
+	case *ConformanceResponse_JsonPayload:
+		b.EncodeVarint(4<<3 | proto.WireBytes)
+		b.EncodeStringBytes(x.JsonPayload)
+	case *ConformanceResponse_Skipped:
+		b.EncodeVarint(5<<3 | proto.WireBytes)
+		b.EncodeStringBytes(x.Skipped)
+	case nil:
+	default:
+		return fmt.Errorf("ConformanceResponse.Result has unexpected type %T", x)
+	}
+	return nil
+}
+
+func _ConformanceResponse_OneofUnmarshaler(msg proto.Message, tag, wire int, b *proto.Buffer) (bool, error) {
+	m := msg.(*ConformanceResponse)
+	switch tag {
+	case 1: // result.parse_error
+		if wire != proto.WireBytes {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeStringBytes()
+		m.Result = &ConformanceResponse_ParseError{x}
+		return true, err
+	case 6: // result.serialize_error
+		if wire != proto.WireBytes {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeStringBytes()
+		m.Result = &ConformanceResponse_SerializeError{x}
+		return true, err
+	case 2: // result.runtime_error
+		if wire != proto.WireBytes {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeStringBytes()
+		m.Result = &ConformanceResponse_RuntimeError{x}
+		return true, err
+	case 3: // result.protobuf_payload
+		if wire != proto.WireBytes {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeRawBytes(true)
+		m.Result = &ConformanceResponse_ProtobufPayload{x}
+		return true, err
+	case 4: // result.json_payload
+		if wire != proto.WireBytes {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeStringBytes()
+		m.Result = &ConformanceResponse_JsonPayload{x}
+		return true, err
+	case 5: // result.skipped
+		if wire != proto.WireBytes {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeStringBytes()
+		m.Result = &ConformanceResponse_Skipped{x}
+		return true, err
+	default:
+		return false, nil
+	}
+}
+
+func _ConformanceResponse_OneofSizer(msg proto.Message) (n int) {
+	m := msg.(*ConformanceResponse)
+	// result
+	switch x := m.Result.(type) {
+	case *ConformanceResponse_ParseError:
+		n += proto.SizeVarint(1<<3 | proto.WireBytes)
+		n += proto.SizeVarint(uint64(len(x.ParseError)))
+		n += len(x.ParseError)
+	case *ConformanceResponse_SerializeError:
+		n += proto.SizeVarint(6<<3 | proto.WireBytes)
+		n += proto.SizeVarint(uint64(len(x.SerializeError)))
+		n += len(x.SerializeError)
+	case *ConformanceResponse_RuntimeError:
+		n += proto.SizeVarint(2<<3 | proto.WireBytes)
+		n += proto.SizeVarint(uint64(len(x.RuntimeError)))
+		n += len(x.RuntimeError)
+	case *ConformanceResponse_ProtobufPayload:
+		n += proto.SizeVarint(3<<3 | proto.WireBytes)
+		n += proto.SizeVarint(uint64(len(x.ProtobufPayload)))
+		n += len(x.ProtobufPayload)
+	case *ConformanceResponse_JsonPayload:
+		n += proto.SizeVarint(4<<3 | proto.WireBytes)
+		n += proto.SizeVarint(uint64(len(x.JsonPayload)))
+		n += len(x.JsonPayload)
+	case *ConformanceResponse_Skipped:
+		n += proto.SizeVarint(5<<3 | proto.WireBytes)
+		n += proto.SizeVarint(uint64(len(x.Skipped)))
+		n += len(x.Skipped)
+	case nil:
+	default:
+		panic(fmt.Sprintf("proto: unexpected type %T in oneof", x))
+	}
+	return n
+}
+
+// This proto includes every type of field in both singular and repeated
+// forms.
+type TestAllTypes struct {
+	// Singular
+	OptionalInt32          int32                       `protobuf:"varint,1,opt,name=optional_int32,json=optionalInt32" json:"optional_int32,omitempty"`
+	OptionalInt64          int64                       `protobuf:"varint,2,opt,name=optional_int64,json=optionalInt64" json:"optional_int64,omitempty"`
+	OptionalUint32         uint32                      `protobuf:"varint,3,opt,name=optional_uint32,json=optionalUint32" json:"optional_uint32,omitempty"`
+	OptionalUint64         uint64                      `protobuf:"varint,4,opt,name=optional_uint64,json=optionalUint64" json:"optional_uint64,omitempty"`
+	OptionalSint32         int32                       `protobuf:"zigzag32,5,opt,name=optional_sint32,json=optionalSint32" json:"optional_sint32,omitempty"`
+	OptionalSint64         int64                       `protobuf:"zigzag64,6,opt,name=optional_sint64,json=optionalSint64" json:"optional_sint64,omitempty"`
+	OptionalFixed32        uint32                      `protobuf:"fixed32,7,opt,name=optional_fixed32,json=optionalFixed32" json:"optional_fixed32,omitempty"`
+	OptionalFixed64        uint64                      `protobuf:"fixed64,8,opt,name=optional_fixed64,json=optionalFixed64" json:"optional_fixed64,omitempty"`
+	OptionalSfixed32       int32                       `protobuf:"fixed32,9,opt,name=optional_sfixed32,json=optionalSfixed32" json:"optional_sfixed32,omitempty"`
+	OptionalSfixed64       int64                       `protobuf:"fixed64,10,opt,name=optional_sfixed64,json=optionalSfixed64" json:"optional_sfixed64,omitempty"`
+	OptionalFloat          float32                     `protobuf:"fixed32,11,opt,name=optional_float,json=optionalFloat" json:"optional_float,omitempty"`
+	OptionalDouble         float64                     `protobuf:"fixed64,12,opt,name=optional_double,json=optionalDouble" json:"optional_double,omitempty"`
+	OptionalBool           bool                        `protobuf:"varint,13,opt,name=optional_bool,json=optionalBool" json:"optional_bool,omitempty"`
+	OptionalString         string                      `protobuf:"bytes,14,opt,name=optional_string,json=optionalString" json:"optional_string,omitempty"`
+	OptionalBytes          []byte                      `protobuf:"bytes,15,opt,name=optional_bytes,json=optionalBytes,proto3" json:"optional_bytes,omitempty"`
+	OptionalNestedMessage  *TestAllTypes_NestedMessage `protobuf:"bytes,18,opt,name=optional_nested_message,json=optionalNestedMessage" json:"optional_nested_message,omitempty"`
+	OptionalForeignMessage *ForeignMessage             `protobuf:"bytes,19,opt,name=optional_foreign_message,json=optionalForeignMessage" json:"optional_foreign_message,omitempty"`
+	OptionalNestedEnum     TestAllTypes_NestedEnum     `protobuf:"varint,21,opt,name=optional_nested_enum,json=optionalNestedEnum,enum=conformance.TestAllTypes_NestedEnum" json:"optional_nested_enum,omitempty"`
+	OptionalForeignEnum    ForeignEnum                 `protobuf:"varint,22,opt,name=optional_foreign_enum,json=optionalForeignEnum,enum=conformance.ForeignEnum" json:"optional_foreign_enum,omitempty"`
+	OptionalStringPiece    string                      `protobuf:"bytes,24,opt,name=optional_string_piece,json=optionalStringPiece" json:"optional_string_piece,omitempty"`
+	OptionalCord           string                      `protobuf:"bytes,25,opt,name=optional_cord,json=optionalCord" json:"optional_cord,omitempty"`
+	RecursiveMessage       *TestAllTypes               `protobuf:"bytes,27,opt,name=recursive_message,json=recursiveMessage" json:"recursive_message,omitempty"`
+	// Repeated
+	RepeatedInt32          []int32                       `protobuf:"varint,31,rep,packed,name=repeated_int32,json=repeatedInt32" json:"repeated_int32,omitempty"`
+	RepeatedInt64          []int64                       `protobuf:"varint,32,rep,packed,name=repeated_int64,json=repeatedInt64" json:"repeated_int64,omitempty"`
+	RepeatedUint32         []uint32                      `protobuf:"varint,33,rep,packed,name=repeated_uint32,json=repeatedUint32" json:"repeated_uint32,omitempty"`
+	RepeatedUint64         []uint64                      `protobuf:"varint,34,rep,packed,name=repeated_uint64,json=repeatedUint64" json:"repeated_uint64,omitempty"`
+	RepeatedSint32         []int32                       `protobuf:"zigzag32,35,rep,packed,name=repeated_sint32,json=repeatedSint32" json:"repeated_sint32,omitempty"`
+	RepeatedSint64         []int64                       `protobuf:"zigzag64,36,rep,packed,name=repeated_sint64,json=repeatedSint64" json:"repeated_sint64,omitempty"`
+	RepeatedFixed32        []uint32                      `protobuf:"fixed32,37,rep,packed,name=repeated_fixed32,json=repeatedFixed32" json:"repeated_fixed32,omitempty"`
+	RepeatedFixed64        []uint64                      `protobuf:"fixed64,38,rep,packed,name=repeated_fixed64,json=repeatedFixed64" json:"repeated_fixed64,omitempty"`
+	RepeatedSfixed32       []int32                       `protobuf:"fixed32,39,rep,packed,name=repeated_sfixed32,json=repeatedSfixed32" json:"repeated_sfixed32,omitempty"`
+	RepeatedSfixed64       []int64                       `protobuf:"fixed64,40,rep,packed,name=repeated_sfixed64,json=repeatedSfixed64" json:"repeated_sfixed64,omitempty"`
+	RepeatedFloat          []float32                     `protobuf:"fixed32,41,rep,packed,name=repeated_float,json=repeatedFloat" json:"repeated_float,omitempty"`
+	RepeatedDouble         []float64                     `protobuf:"fixed64,42,rep,packed,name=repeated_double,json=repeatedDouble" json:"repeated_double,omitempty"`
+	RepeatedBool           []bool                        `protobuf:"varint,43,rep,packed,name=repeated_bool,json=repeatedBool" json:"repeated_bool,omitempty"`
+	RepeatedString         []string                      `protobuf:"bytes,44,rep,name=repeated_string,json=repeatedString" json:"repeated_string,omitempty"`
+	RepeatedBytes          [][]byte                      `protobuf:"bytes,45,rep,name=repeated_bytes,json=repeatedBytes,proto3" json:"repeated_bytes,omitempty"`
+	RepeatedNestedMessage  []*TestAllTypes_NestedMessage `protobuf:"bytes,48,rep,name=repeated_nested_message,json=repeatedNestedMessage" json:"repeated_nested_message,omitempty"`
+	RepeatedForeignMessage []*ForeignMessage             `protobuf:"bytes,49,rep,name=repeated_foreign_message,json=repeatedForeignMessage" json:"repeated_foreign_message,omitempty"`
+	RepeatedNestedEnum     []TestAllTypes_NestedEnum     `protobuf:"varint,51,rep,packed,name=repeated_nested_enum,json=repeatedNestedEnum,enum=conformance.TestAllTypes_NestedEnum" json:"repeated_nested_enum,omitempty"`
+	RepeatedForeignEnum    []ForeignEnum                 `protobuf:"varint,52,rep,packed,name=repeated_foreign_enum,json=repeatedForeignEnum,enum=conformance.ForeignEnum" json:"repeated_foreign_enum,omitempty"`
+	RepeatedStringPiece    []string                      `protobuf:"bytes,54,rep,name=repeated_string_piece,json=repeatedStringPiece" json:"repeated_string_piece,omitempty"`
+	RepeatedCord           []string                      `protobuf:"bytes,55,rep,name=repeated_cord,json=repeatedCord" json:"repeated_cord,omitempty"`
+	// Map
+	MapInt32Int32           map[int32]int32                        `protobuf:"bytes,56,rep,name=map_int32_int32,json=mapInt32Int32" json:"map_int32_int32,omitempty" protobuf_key:"varint,1,opt,name=key" protobuf_val:"varint,2,opt,name=value"`
+	MapInt64Int64           map[int64]int64                        `protobuf:"bytes,57,rep,name=map_int64_int64,json=mapInt64Int64" json:"map_int64_int64,omitempty" protobuf_key:"varint,1,opt,name=key" protobuf_val:"varint,2,opt,name=value"`
+	MapUint32Uint32         map[uint32]uint32                      `protobuf:"bytes,58,rep,name=map_uint32_uint32,json=mapUint32Uint32" json:"map_uint32_uint32,omitempty" protobuf_key:"varint,1,opt,name=key" protobuf_val:"varint,2,opt,name=value"`
+	MapUint64Uint64         map[uint64]uint64                      `protobuf:"bytes,59,rep,name=map_uint64_uint64,json=mapUint64Uint64" json:"map_uint64_uint64,omitempty" protobuf_key:"varint,1,opt,name=key" protobuf_val:"varint,2,opt,name=value"`
+	MapSint32Sint32         map[int32]int32                        `protobuf:"bytes,60,rep,name=map_sint32_sint32,json=mapSint32Sint32" json:"map_sint32_sint32,omitempty" protobuf_key:"zigzag32,1,opt,name=key" protobuf_val:"zigzag32,2,opt,name=value"`
+	MapSint64Sint64         map[int64]int64                        `protobuf:"bytes,61,rep,name=map_sint64_sint64,json=mapSint64Sint64" json:"map_sint64_sint64,omitempty" protobuf_key:"zigzag64,1,opt,name=key" protobuf_val:"zigzag64,2,opt,name=value"`
+	MapFixed32Fixed32       map[uint32]uint32                      `protobuf:"bytes,62,rep,name=map_fixed32_fixed32,json=mapFixed32Fixed32" json:"map_fixed32_fixed32,omitempty" protobuf_key:"fixed32,1,opt,name=key" protobuf_val:"fixed32,2,opt,name=value"`
+	MapFixed64Fixed64       map[uint64]uint64                      `protobuf:"bytes,63,rep,name=map_fixed64_fixed64,json=mapFixed64Fixed64" json:"map_fixed64_fixed64,omitempty" protobuf_key:"fixed64,1,opt,name=key" protobuf_val:"fixed64,2,opt,name=value"`
+	MapSfixed32Sfixed32     map[int32]int32                        `protobuf:"bytes,64,rep,name=map_sfixed32_sfixed32,json=mapSfixed32Sfixed32" json:"map_sfixed32_sfixed32,omitempty" protobuf_key:"fixed32,1,opt,name=key" protobuf_val:"fixed32,2,opt,name=value"`
+	MapSfixed64Sfixed64     map[int64]int64                        `protobuf:"bytes,65,rep,name=map_sfixed64_sfixed64,json=mapSfixed64Sfixed64" json:"map_sfixed64_sfixed64,omitempty" protobuf_key:"fixed64,1,opt,name=key" protobuf_val:"fixed64,2,opt,name=value"`
+	MapInt32Float           map[int32]float32                      `protobuf:"bytes,66,rep,name=map_int32_float,json=mapInt32Float" json:"map_int32_float,omitempty" protobuf_key:"varint,1,opt,name=key" protobuf_val:"fixed32,2,opt,name=value"`
+	MapInt32Double          map[int32]float64                      `protobuf:"bytes,67,rep,name=map_int32_double,json=mapInt32Double" json:"map_int32_double,omitempty" protobuf_key:"varint,1,opt,name=key" protobuf_val:"fixed64,2,opt,name=value"`
+	MapBoolBool             map[bool]bool                          `protobuf:"bytes,68,rep,name=map_bool_bool,json=mapBoolBool" json:"map_bool_bool,omitempty" protobuf_key:"varint,1,opt,name=key" protobuf_val:"varint,2,opt,name=value"`
+	MapStringString         map[string]string                      `protobuf:"bytes,69,rep,name=map_string_string,json=mapStringString" json:"map_string_string,omitempty" protobuf_key:"bytes,1,opt,name=key" protobuf_val:"bytes,2,opt,name=value"`
+	MapStringBytes          map[string][]byte                      `protobuf:"bytes,70,rep,name=map_string_bytes,json=mapStringBytes" json:"map_string_bytes,omitempty" protobuf_key:"bytes,1,opt,name=key" protobuf_val:"bytes,2,opt,name=value,proto3"`
+	MapStringNestedMessage  map[string]*TestAllTypes_NestedMessage `protobuf:"bytes,71,rep,name=map_string_nested_message,json=mapStringNestedMessage" json:"map_string_nested_message,omitempty" protobuf_key:"bytes,1,opt,name=key" protobuf_val:"bytes,2,opt,name=value"`
+	MapStringForeignMessage map[string]*ForeignMessage             `protobuf:"bytes,72,rep,name=map_string_foreign_message,json=mapStringForeignMessage" json:"map_string_foreign_message,omitempty" protobuf_key:"bytes,1,opt,name=key" protobuf_val:"bytes,2,opt,name=value"`
+	MapStringNestedEnum     map[string]TestAllTypes_NestedEnum     `protobuf:"bytes,73,rep,name=map_string_nested_enum,json=mapStringNestedEnum" json:"map_string_nested_enum,omitempty" protobuf_key:"bytes,1,opt,name=key" protobuf_val:"varint,2,opt,name=value,enum=conformance.TestAllTypes_NestedEnum"`
+	MapStringForeignEnum    map[string]ForeignEnum                 `protobuf:"bytes,74,rep,name=map_string_foreign_enum,json=mapStringForeignEnum" json:"map_string_foreign_enum,omitempty" protobuf_key:"bytes,1,opt,name=key" protobuf_val:"varint,2,opt,name=value,enum=conformance.ForeignEnum"`
+	// Types that are valid to be assigned to OneofField:
+	//	*TestAllTypes_OneofUint32
+	//	*TestAllTypes_OneofNestedMessage
+	//	*TestAllTypes_OneofString
+	//	*TestAllTypes_OneofBytes
+	//	*TestAllTypes_OneofBool
+	//	*TestAllTypes_OneofUint64
+	//	*TestAllTypes_OneofFloat
+	//	*TestAllTypes_OneofDouble
+	//	*TestAllTypes_OneofEnum
+	OneofField isTestAllTypes_OneofField `protobuf_oneof:"oneof_field"`
+	// Well-known types
+	OptionalBoolWrapper   *google_protobuf5.BoolValue     `protobuf:"bytes,201,opt,name=optional_bool_wrapper,json=optionalBoolWrapper" json:"optional_bool_wrapper,omitempty"`
+	OptionalInt32Wrapper  *google_protobuf5.Int32Value    `protobuf:"bytes,202,opt,name=optional_int32_wrapper,json=optionalInt32Wrapper" json:"optional_int32_wrapper,omitempty"`
+	OptionalInt64Wrapper  *google_protobuf5.Int64Value    `protobuf:"bytes,203,opt,name=optional_int64_wrapper,json=optionalInt64Wrapper" json:"optional_int64_wrapper,omitempty"`
+	OptionalUint32Wrapper *google_protobuf5.UInt32Value   `protobuf:"bytes,204,opt,name=optional_uint32_wrapper,json=optionalUint32Wrapper" json:"optional_uint32_wrapper,omitempty"`
+	OptionalUint64Wrapper *google_protobuf5.UInt64Value   `protobuf:"bytes,205,opt,name=optional_uint64_wrapper,json=optionalUint64Wrapper" json:"optional_uint64_wrapper,omitempty"`
+	OptionalFloatWrapper  *google_protobuf5.FloatValue    `protobuf:"bytes,206,opt,name=optional_float_wrapper,json=optionalFloatWrapper" json:"optional_float_wrapper,omitempty"`
+	OptionalDoubleWrapper *google_protobuf5.DoubleValue   `protobuf:"bytes,207,opt,name=optional_double_wrapper,json=optionalDoubleWrapper" json:"optional_double_wrapper,omitempty"`
+	OptionalStringWrapper *google_protobuf5.StringValue   `protobuf:"bytes,208,opt,name=optional_string_wrapper,json=optionalStringWrapper" json:"optional_string_wrapper,omitempty"`
+	OptionalBytesWrapper  *google_protobuf5.BytesValue    `protobuf:"bytes,209,opt,name=optional_bytes_wrapper,json=optionalBytesWrapper" json:"optional_bytes_wrapper,omitempty"`
+	RepeatedBoolWrapper   []*google_protobuf5.BoolValue   `protobuf:"bytes,211,rep,name=repeated_bool_wrapper,json=repeatedBoolWrapper" json:"repeated_bool_wrapper,omitempty"`
+	RepeatedInt32Wrapper  []*google_protobuf5.Int32Value  `protobuf:"bytes,212,rep,name=repeated_int32_wrapper,json=repeatedInt32Wrapper" json:"repeated_int32_wrapper,omitempty"`
+	RepeatedInt64Wrapper  []*google_protobuf5.Int64Value  `protobuf:"bytes,213,rep,name=repeated_int64_wrapper,json=repeatedInt64Wrapper" json:"repeated_int64_wrapper,omitempty"`
+	RepeatedUint32Wrapper []*google_protobuf5.UInt32Value `protobuf:"bytes,214,rep,name=repeated_uint32_wrapper,json=repeatedUint32Wrapper" json:"repeated_uint32_wrapper,omitempty"`
+	RepeatedUint64Wrapper []*google_protobuf5.UInt64Value `protobuf:"bytes,215,rep,name=repeated_uint64_wrapper,json=repeatedUint64Wrapper" json:"repeated_uint64_wrapper,omitempty"`
+	RepeatedFloatWrapper  []*google_protobuf5.FloatValue  `protobuf:"bytes,216,rep,name=repeated_float_wrapper,json=repeatedFloatWrapper" json:"repeated_float_wrapper,omitempty"`
+	RepeatedDoubleWrapper []*google_protobuf5.DoubleValue `protobuf:"bytes,217,rep,name=repeated_double_wrapper,json=repeatedDoubleWrapper" json:"repeated_double_wrapper,omitempty"`
+	RepeatedStringWrapper []*google_protobuf5.StringValue `protobuf:"bytes,218,rep,name=repeated_string_wrapper,json=repeatedStringWrapper" json:"repeated_string_wrapper,omitempty"`
+	RepeatedBytesWrapper  []*google_protobuf5.BytesValue  `protobuf:"bytes,219,rep,name=repeated_bytes_wrapper,json=repeatedBytesWrapper" json:"repeated_bytes_wrapper,omitempty"`
+	OptionalDuration      *google_protobuf1.Duration      `protobuf:"bytes,301,opt,name=optional_duration,json=optionalDuration" json:"optional_duration,omitempty"`
+	OptionalTimestamp     *google_protobuf4.Timestamp     `protobuf:"bytes,302,opt,name=optional_timestamp,json=optionalTimestamp" json:"optional_timestamp,omitempty"`
+	OptionalFieldMask     *google_protobuf2.FieldMask     `protobuf:"bytes,303,opt,name=optional_field_mask,json=optionalFieldMask" json:"optional_field_mask,omitempty"`
+	OptionalStruct        *google_protobuf3.Struct        `protobuf:"bytes,304,opt,name=optional_struct,json=optionalStruct" json:"optional_struct,omitempty"`
+	OptionalAny           *google_protobuf.Any            `protobuf:"bytes,305,opt,name=optional_any,json=optionalAny" json:"optional_any,omitempty"`
+	OptionalValue         *google_protobuf3.Value         `protobuf:"bytes,306,opt,name=optional_value,json=optionalValue" json:"optional_value,omitempty"`
+	RepeatedDuration      []*google_protobuf1.Duration    `protobuf:"bytes,311,rep,name=repeated_duration,json=repeatedDuration" json:"repeated_duration,omitempty"`
+	RepeatedTimestamp     []*google_protobuf4.Timestamp   `protobuf:"bytes,312,rep,name=repeated_timestamp,json=repeatedTimestamp" json:"repeated_timestamp,omitempty"`
+	RepeatedFieldmask     []*google_protobuf2.FieldMask   `protobuf:"bytes,313,rep,name=repeated_fieldmask,json=repeatedFieldmask" json:"repeated_fieldmask,omitempty"`
+	RepeatedStruct        []*google_protobuf3.Struct      `protobuf:"bytes,324,rep,name=repeated_struct,json=repeatedStruct" json:"repeated_struct,omitempty"`
+	RepeatedAny           []*google_protobuf.Any          `protobuf:"bytes,315,rep,name=repeated_any,json=repeatedAny" json:"repeated_any,omitempty"`
+	RepeatedValue         []*google_protobuf3.Value       `protobuf:"bytes,316,rep,name=repeated_value,json=repeatedValue" json:"repeated_value,omitempty"`
+	// Test field-name-to-JSON-name convention.
+	// (protobuf says names can be any valid C/C++ identifier.)
+	Fieldname1    int32 `protobuf:"varint,401,opt,name=fieldname1" json:"fieldname1,omitempty"`
+	FieldName2    int32 `protobuf:"varint,402,opt,name=field_name2,json=fieldName2" json:"field_name2,omitempty"`
+	XFieldName3   int32 `protobuf:"varint,403,opt,name=_field_name3,json=fieldName3" json:"_field_name3,omitempty"`
+	Field_Name4_  int32 `protobuf:"varint,404,opt,name=field__name4_,json=fieldName4" json:"field__name4_,omitempty"`
+	Field0Name5   int32 `protobuf:"varint,405,opt,name=field0name5" json:"field0name5,omitempty"`
+	Field_0Name6  int32 `protobuf:"varint,406,opt,name=field_0_name6,json=field0Name6" json:"field_0_name6,omitempty"`
+	FieldName7    int32 `protobuf:"varint,407,opt,name=fieldName7" json:"fieldName7,omitempty"`
+	FieldName8    int32 `protobuf:"varint,408,opt,name=FieldName8,json=fieldName8" json:"FieldName8,omitempty"`
+	Field_Name9   int32 `protobuf:"varint,409,opt,name=field_Name9,json=fieldName9" json:"field_Name9,omitempty"`
+	Field_Name10  int32 `protobuf:"varint,410,opt,name=Field_Name10,json=fieldName10" json:"Field_Name10,omitempty"`
+	FIELD_NAME11  int32 `protobuf:"varint,411,opt,name=FIELD_NAME11,json=fIELDNAME11" json:"FIELD_NAME11,omitempty"`
+	FIELDName12   int32 `protobuf:"varint,412,opt,name=FIELD_name12,json=fIELDName12" json:"FIELD_name12,omitempty"`
+	XFieldName13  int32 `protobuf:"varint,413,opt,name=__field_name13,json=fieldName13" json:"__field_name13,omitempty"`
+	X_FieldName14 int32 `protobuf:"varint,414,opt,name=__Field_name14,json=fieldName14" json:"__Field_name14,omitempty"`
+	Field_Name15  int32 `protobuf:"varint,415,opt,name=field__name15,json=fieldName15" json:"field__name15,omitempty"`
+	Field__Name16 int32 `protobuf:"varint,416,opt,name=field__Name16,json=fieldName16" json:"field__Name16,omitempty"`
+	FieldName17__ int32 `protobuf:"varint,417,opt,name=field_name17__,json=fieldName17" json:"field_name17__,omitempty"`
+	FieldName18__ int32 `protobuf:"varint,418,opt,name=Field_name18__,json=fieldName18" json:"Field_name18__,omitempty"`
+}
+
+func (m *TestAllTypes) Reset()                    { *m = TestAllTypes{} }
+func (m *TestAllTypes) String() string            { return proto.CompactTextString(m) }
+func (*TestAllTypes) ProtoMessage()               {}
+func (*TestAllTypes) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{2} }
+
+type isTestAllTypes_OneofField interface {
+	isTestAllTypes_OneofField()
+}
+
+type TestAllTypes_OneofUint32 struct {
+	OneofUint32 uint32 `protobuf:"varint,111,opt,name=oneof_uint32,json=oneofUint32,oneof"`
+}
+type TestAllTypes_OneofNestedMessage struct {
+	OneofNestedMessage *TestAllTypes_NestedMessage `protobuf:"bytes,112,opt,name=oneof_nested_message,json=oneofNestedMessage,oneof"`
+}
+type TestAllTypes_OneofString struct {
+	OneofString string `protobuf:"bytes,113,opt,name=oneof_string,json=oneofString,oneof"`
+}
+type TestAllTypes_OneofBytes struct {
+	OneofBytes []byte `protobuf:"bytes,114,opt,name=oneof_bytes,json=oneofBytes,proto3,oneof"`
+}
+type TestAllTypes_OneofBool struct {
+	OneofBool bool `protobuf:"varint,115,opt,name=oneof_bool,json=oneofBool,oneof"`
+}
+type TestAllTypes_OneofUint64 struct {
+	OneofUint64 uint64 `protobuf:"varint,116,opt,name=oneof_uint64,json=oneofUint64,oneof"`
+}
+type TestAllTypes_OneofFloat struct {
+	OneofFloat float32 `protobuf:"fixed32,117,opt,name=oneof_float,json=oneofFloat,oneof"`
+}
+type TestAllTypes_OneofDouble struct {
+	OneofDouble float64 `protobuf:"fixed64,118,opt,name=oneof_double,json=oneofDouble,oneof"`
+}
+type TestAllTypes_OneofEnum struct {
+	OneofEnum TestAllTypes_NestedEnum `protobuf:"varint,119,opt,name=oneof_enum,json=oneofEnum,enum=conformance.TestAllTypes_NestedEnum,oneof"`
+}
+
+func (*TestAllTypes_OneofUint32) isTestAllTypes_OneofField()        {}
+func (*TestAllTypes_OneofNestedMessage) isTestAllTypes_OneofField() {}
+func (*TestAllTypes_OneofString) isTestAllTypes_OneofField()        {}
+func (*TestAllTypes_OneofBytes) isTestAllTypes_OneofField()         {}
+func (*TestAllTypes_OneofBool) isTestAllTypes_OneofField()          {}
+func (*TestAllTypes_OneofUint64) isTestAllTypes_OneofField()        {}
+func (*TestAllTypes_OneofFloat) isTestAllTypes_OneofField()         {}
+func (*TestAllTypes_OneofDouble) isTestAllTypes_OneofField()        {}
+func (*TestAllTypes_OneofEnum) isTestAllTypes_OneofField()          {}
+
+func (m *TestAllTypes) GetOneofField() isTestAllTypes_OneofField {
+	if m != nil {
+		return m.OneofField
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetOptionalNestedMessage() *TestAllTypes_NestedMessage {
+	if m != nil {
+		return m.OptionalNestedMessage
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetOptionalForeignMessage() *ForeignMessage {
+	if m != nil {
+		return m.OptionalForeignMessage
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetRecursiveMessage() *TestAllTypes {
+	if m != nil {
+		return m.RecursiveMessage
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetRepeatedNestedMessage() []*TestAllTypes_NestedMessage {
+	if m != nil {
+		return m.RepeatedNestedMessage
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetRepeatedForeignMessage() []*ForeignMessage {
+	if m != nil {
+		return m.RepeatedForeignMessage
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetMapInt32Int32() map[int32]int32 {
+	if m != nil {
+		return m.MapInt32Int32
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetMapInt64Int64() map[int64]int64 {
+	if m != nil {
+		return m.MapInt64Int64
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetMapUint32Uint32() map[uint32]uint32 {
+	if m != nil {
+		return m.MapUint32Uint32
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetMapUint64Uint64() map[uint64]uint64 {
+	if m != nil {
+		return m.MapUint64Uint64
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetMapSint32Sint32() map[int32]int32 {
+	if m != nil {
+		return m.MapSint32Sint32
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetMapSint64Sint64() map[int64]int64 {
+	if m != nil {
+		return m.MapSint64Sint64
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetMapFixed32Fixed32() map[uint32]uint32 {
+	if m != nil {
+		return m.MapFixed32Fixed32
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetMapFixed64Fixed64() map[uint64]uint64 {
+	if m != nil {
+		return m.MapFixed64Fixed64
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetMapSfixed32Sfixed32() map[int32]int32 {
+	if m != nil {
+		return m.MapSfixed32Sfixed32
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetMapSfixed64Sfixed64() map[int64]int64 {
+	if m != nil {
+		return m.MapSfixed64Sfixed64
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetMapInt32Float() map[int32]float32 {
+	if m != nil {
+		return m.MapInt32Float
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetMapInt32Double() map[int32]float64 {
+	if m != nil {
+		return m.MapInt32Double
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetMapBoolBool() map[bool]bool {
+	if m != nil {
+		return m.MapBoolBool
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetMapStringString() map[string]string {
+	if m != nil {
+		return m.MapStringString
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetMapStringBytes() map[string][]byte {
+	if m != nil {
+		return m.MapStringBytes
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetMapStringNestedMessage() map[string]*TestAllTypes_NestedMessage {
+	if m != nil {
+		return m.MapStringNestedMessage
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetMapStringForeignMessage() map[string]*ForeignMessage {
+	if m != nil {
+		return m.MapStringForeignMessage
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetMapStringNestedEnum() map[string]TestAllTypes_NestedEnum {
+	if m != nil {
+		return m.MapStringNestedEnum
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetMapStringForeignEnum() map[string]ForeignEnum {
+	if m != nil {
+		return m.MapStringForeignEnum
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetOneofUint32() uint32 {
+	if x, ok := m.GetOneofField().(*TestAllTypes_OneofUint32); ok {
+		return x.OneofUint32
+	}
+	return 0
+}
+
+func (m *TestAllTypes) GetOneofNestedMessage() *TestAllTypes_NestedMessage {
+	if x, ok := m.GetOneofField().(*TestAllTypes_OneofNestedMessage); ok {
+		return x.OneofNestedMessage
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetOneofString() string {
+	if x, ok := m.GetOneofField().(*TestAllTypes_OneofString); ok {
+		return x.OneofString
+	}
+	return ""
+}
+
+func (m *TestAllTypes) GetOneofBytes() []byte {
+	if x, ok := m.GetOneofField().(*TestAllTypes_OneofBytes); ok {
+		return x.OneofBytes
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetOneofBool() bool {
+	if x, ok := m.GetOneofField().(*TestAllTypes_OneofBool); ok {
+		return x.OneofBool
+	}
+	return false
+}
+
+func (m *TestAllTypes) GetOneofUint64() uint64 {
+	if x, ok := m.GetOneofField().(*TestAllTypes_OneofUint64); ok {
+		return x.OneofUint64
+	}
+	return 0
+}
+
+func (m *TestAllTypes) GetOneofFloat() float32 {
+	if x, ok := m.GetOneofField().(*TestAllTypes_OneofFloat); ok {
+		return x.OneofFloat
+	}
+	return 0
+}
+
+func (m *TestAllTypes) GetOneofDouble() float64 {
+	if x, ok := m.GetOneofField().(*TestAllTypes_OneofDouble); ok {
+		return x.OneofDouble
+	}
+	return 0
+}
+
+func (m *TestAllTypes) GetOneofEnum() TestAllTypes_NestedEnum {
+	if x, ok := m.GetOneofField().(*TestAllTypes_OneofEnum); ok {
+		return x.OneofEnum
+	}
+	return TestAllTypes_FOO
+}
+
+func (m *TestAllTypes) GetOptionalBoolWrapper() *google_protobuf5.BoolValue {
+	if m != nil {
+		return m.OptionalBoolWrapper
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetOptionalInt32Wrapper() *google_protobuf5.Int32Value {
+	if m != nil {
+		return m.OptionalInt32Wrapper
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetOptionalInt64Wrapper() *google_protobuf5.Int64Value {
+	if m != nil {
+		return m.OptionalInt64Wrapper
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetOptionalUint32Wrapper() *google_protobuf5.UInt32Value {
+	if m != nil {
+		return m.OptionalUint32Wrapper
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetOptionalUint64Wrapper() *google_protobuf5.UInt64Value {
+	if m != nil {
+		return m.OptionalUint64Wrapper
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetOptionalFloatWrapper() *google_protobuf5.FloatValue {
+	if m != nil {
+		return m.OptionalFloatWrapper
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetOptionalDoubleWrapper() *google_protobuf5.DoubleValue {
+	if m != nil {
+		return m.OptionalDoubleWrapper
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetOptionalStringWrapper() *google_protobuf5.StringValue {
+	if m != nil {
+		return m.OptionalStringWrapper
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetOptionalBytesWrapper() *google_protobuf5.BytesValue {
+	if m != nil {
+		return m.OptionalBytesWrapper
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetRepeatedBoolWrapper() []*google_protobuf5.BoolValue {
+	if m != nil {
+		return m.RepeatedBoolWrapper
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetRepeatedInt32Wrapper() []*google_protobuf5.Int32Value {
+	if m != nil {
+		return m.RepeatedInt32Wrapper
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetRepeatedInt64Wrapper() []*google_protobuf5.Int64Value {
+	if m != nil {
+		return m.RepeatedInt64Wrapper
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetRepeatedUint32Wrapper() []*google_protobuf5.UInt32Value {
+	if m != nil {
+		return m.RepeatedUint32Wrapper
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetRepeatedUint64Wrapper() []*google_protobuf5.UInt64Value {
+	if m != nil {
+		return m.RepeatedUint64Wrapper
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetRepeatedFloatWrapper() []*google_protobuf5.FloatValue {
+	if m != nil {
+		return m.RepeatedFloatWrapper
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetRepeatedDoubleWrapper() []*google_protobuf5.DoubleValue {
+	if m != nil {
+		return m.RepeatedDoubleWrapper
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetRepeatedStringWrapper() []*google_protobuf5.StringValue {
+	if m != nil {
+		return m.RepeatedStringWrapper
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetRepeatedBytesWrapper() []*google_protobuf5.BytesValue {
+	if m != nil {
+		return m.RepeatedBytesWrapper
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetOptionalDuration() *google_protobuf1.Duration {
+	if m != nil {
+		return m.OptionalDuration
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetOptionalTimestamp() *google_protobuf4.Timestamp {
+	if m != nil {
+		return m.OptionalTimestamp
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetOptionalFieldMask() *google_protobuf2.FieldMask {
+	if m != nil {
+		return m.OptionalFieldMask
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetOptionalStruct() *google_protobuf3.Struct {
+	if m != nil {
+		return m.OptionalStruct
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetOptionalAny() *google_protobuf.Any {
+	if m != nil {
+		return m.OptionalAny
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetOptionalValue() *google_protobuf3.Value {
+	if m != nil {
+		return m.OptionalValue
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetRepeatedDuration() []*google_protobuf1.Duration {
+	if m != nil {
+		return m.RepeatedDuration
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetRepeatedTimestamp() []*google_protobuf4.Timestamp {
+	if m != nil {
+		return m.RepeatedTimestamp
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetRepeatedFieldmask() []*google_protobuf2.FieldMask {
+	if m != nil {
+		return m.RepeatedFieldmask
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetRepeatedStruct() []*google_protobuf3.Struct {
+	if m != nil {
+		return m.RepeatedStruct
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetRepeatedAny() []*google_protobuf.Any {
+	if m != nil {
+		return m.RepeatedAny
+	}
+	return nil
+}
+
+func (m *TestAllTypes) GetRepeatedValue() []*google_protobuf3.Value {
+	if m != nil {
+		return m.RepeatedValue
+	}
+	return nil
+}
+
+// XXX_OneofFuncs is for the internal use of the proto package.
+func (*TestAllTypes) XXX_OneofFuncs() (func(msg proto.Message, b *proto.Buffer) error, func(msg proto.Message, tag, wire int, b *proto.Buffer) (bool, error), func(msg proto.Message) (n int), []interface{}) {
+	return _TestAllTypes_OneofMarshaler, _TestAllTypes_OneofUnmarshaler, _TestAllTypes_OneofSizer, []interface{}{
+		(*TestAllTypes_OneofUint32)(nil),
+		(*TestAllTypes_OneofNestedMessage)(nil),
+		(*TestAllTypes_OneofString)(nil),
+		(*TestAllTypes_OneofBytes)(nil),
+		(*TestAllTypes_OneofBool)(nil),
+		(*TestAllTypes_OneofUint64)(nil),
+		(*TestAllTypes_OneofFloat)(nil),
+		(*TestAllTypes_OneofDouble)(nil),
+		(*TestAllTypes_OneofEnum)(nil),
+	}
+}
+
+func _TestAllTypes_OneofMarshaler(msg proto.Message, b *proto.Buffer) error {
+	m := msg.(*TestAllTypes)
+	// oneof_field
+	switch x := m.OneofField.(type) {
+	case *TestAllTypes_OneofUint32:
+		b.EncodeVarint(111<<3 | proto.WireVarint)
+		b.EncodeVarint(uint64(x.OneofUint32))
+	case *TestAllTypes_OneofNestedMessage:
+		b.EncodeVarint(112<<3 | proto.WireBytes)
+		if err := b.EncodeMessage(x.OneofNestedMessage); err != nil {
+			return err
+		}
+	case *TestAllTypes_OneofString:
+		b.EncodeVarint(113<<3 | proto.WireBytes)
+		b.EncodeStringBytes(x.OneofString)
+	case *TestAllTypes_OneofBytes:
+		b.EncodeVarint(114<<3 | proto.WireBytes)
+		b.EncodeRawBytes(x.OneofBytes)
+	case *TestAllTypes_OneofBool:
+		t := uint64(0)
+		if x.OneofBool {
+			t = 1
+		}
+		b.EncodeVarint(115<<3 | proto.WireVarint)
+		b.EncodeVarint(t)
+	case *TestAllTypes_OneofUint64:
+		b.EncodeVarint(116<<3 | proto.WireVarint)
+		b.EncodeVarint(uint64(x.OneofUint64))
+	case *TestAllTypes_OneofFloat:
+		b.EncodeVarint(117<<3 | proto.WireFixed32)
+		b.EncodeFixed32(uint64(math.Float32bits(x.OneofFloat)))
+	case *TestAllTypes_OneofDouble:
+		b.EncodeVarint(118<<3 | proto.WireFixed64)
+		b.EncodeFixed64(math.Float64bits(x.OneofDouble))
+	case *TestAllTypes_OneofEnum:
+		b.EncodeVarint(119<<3 | proto.WireVarint)
+		b.EncodeVarint(uint64(x.OneofEnum))
+	case nil:
+	default:
+		return fmt.Errorf("TestAllTypes.OneofField has unexpected type %T", x)
+	}
+	return nil
+}
+
+func _TestAllTypes_OneofUnmarshaler(msg proto.Message, tag, wire int, b *proto.Buffer) (bool, error) {
+	m := msg.(*TestAllTypes)
+	switch tag {
+	case 111: // oneof_field.oneof_uint32
+		if wire != proto.WireVarint {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeVarint()
+		m.OneofField = &TestAllTypes_OneofUint32{uint32(x)}
+		return true, err
+	case 112: // oneof_field.oneof_nested_message
+		if wire != proto.WireBytes {
+			return true, proto.ErrInternalBadWireType
+		}
+		msg := new(TestAllTypes_NestedMessage)
+		err := b.DecodeMessage(msg)
+		m.OneofField = &TestAllTypes_OneofNestedMessage{msg}
+		return true, err
+	case 113: // oneof_field.oneof_string
+		if wire != proto.WireBytes {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeStringBytes()
+		m.OneofField = &TestAllTypes_OneofString{x}
+		return true, err
+	case 114: // oneof_field.oneof_bytes
+		if wire != proto.WireBytes {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeRawBytes(true)
+		m.OneofField = &TestAllTypes_OneofBytes{x}
+		return true, err
+	case 115: // oneof_field.oneof_bool
+		if wire != proto.WireVarint {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeVarint()
+		m.OneofField = &TestAllTypes_OneofBool{x != 0}
+		return true, err
+	case 116: // oneof_field.oneof_uint64
+		if wire != proto.WireVarint {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeVarint()
+		m.OneofField = &TestAllTypes_OneofUint64{x}
+		return true, err
+	case 117: // oneof_field.oneof_float
+		if wire != proto.WireFixed32 {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeFixed32()
+		m.OneofField = &TestAllTypes_OneofFloat{math.Float32frombits(uint32(x))}
+		return true, err
+	case 118: // oneof_field.oneof_double
+		if wire != proto.WireFixed64 {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeFixed64()
+		m.OneofField = &TestAllTypes_OneofDouble{math.Float64frombits(x)}
+		return true, err
+	case 119: // oneof_field.oneof_enum
+		if wire != proto.WireVarint {
+			return true, proto.ErrInternalBadWireType
+		}
+		x, err := b.DecodeVarint()
+		m.OneofField = &TestAllTypes_OneofEnum{TestAllTypes_NestedEnum(x)}
+		return true, err
+	default:
+		return false, nil
+	}
+}
+
+func _TestAllTypes_OneofSizer(msg proto.Message) (n int) {
+	m := msg.(*TestAllTypes)
+	// oneof_field
+	switch x := m.OneofField.(type) {
+	case *TestAllTypes_OneofUint32:
+		n += proto.SizeVarint(111<<3 | proto.WireVarint)
+		n += proto.SizeVarint(uint64(x.OneofUint32))
+	case *TestAllTypes_OneofNestedMessage:
+		s := proto.Size(x.OneofNestedMessage)
+		n += proto.SizeVarint(112<<3 | proto.WireBytes)
+		n += proto.SizeVarint(uint64(s))
+		n += s
+	case *TestAllTypes_OneofString:
+		n += proto.SizeVarint(113<<3 | proto.WireBytes)
+		n += proto.SizeVarint(uint64(len(x.OneofString)))
+		n += len(x.OneofString)
+	case *TestAllTypes_OneofBytes:
+		n += proto.SizeVarint(114<<3 | proto.WireBytes)
+		n += proto.SizeVarint(uint64(len(x.OneofBytes)))
+		n += len(x.OneofBytes)
+	case *TestAllTypes_OneofBool:
+		n += proto.SizeVarint(115<<3 | proto.WireVarint)
+		n += 1
+	case *TestAllTypes_OneofUint64:
+		n += proto.SizeVarint(116<<3 | proto.WireVarint)
+		n += proto.SizeVarint(uint64(x.OneofUint64))
+	case *TestAllTypes_OneofFloat:
+		n += proto.SizeVarint(117<<3 | proto.WireFixed32)
+		n += 4
+	case *TestAllTypes_OneofDouble:
+		n += proto.SizeVarint(118<<3 | proto.WireFixed64)
+		n += 8
+	case *TestAllTypes_OneofEnum:
+		n += proto.SizeVarint(119<<3 | proto.WireVarint)
+		n += proto.SizeVarint(uint64(x.OneofEnum))
+	case nil:
+	default:
+		panic(fmt.Sprintf("proto: unexpected type %T in oneof", x))
+	}
+	return n
+}
+
+type TestAllTypes_NestedMessage struct {
+	A           int32         `protobuf:"varint,1,opt,name=a" json:"a,omitempty"`
+	Corecursive *TestAllTypes `protobuf:"bytes,2,opt,name=corecursive" json:"corecursive,omitempty"`
+}
+
+func (m *TestAllTypes_NestedMessage) Reset()                    { *m = TestAllTypes_NestedMessage{} }
+func (m *TestAllTypes_NestedMessage) String() string            { return proto.CompactTextString(m) }
+func (*TestAllTypes_NestedMessage) ProtoMessage()               {}
+func (*TestAllTypes_NestedMessage) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{2, 0} }
+
+func (m *TestAllTypes_NestedMessage) GetCorecursive() *TestAllTypes {
+	if m != nil {
+		return m.Corecursive
+	}
+	return nil
+}
+
+type ForeignMessage struct {
+	C int32 `protobuf:"varint,1,opt,name=c" json:"c,omitempty"`
+}
+
+func (m *ForeignMessage) Reset()                    { *m = ForeignMessage{} }
+func (m *ForeignMessage) String() string            { return proto.CompactTextString(m) }
+func (*ForeignMessage) ProtoMessage()               {}
+func (*ForeignMessage) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{3} }
+
+func init() {
+	proto.RegisterType((*ConformanceRequest)(nil), "conformance.ConformanceRequest")
+	proto.RegisterType((*ConformanceResponse)(nil), "conformance.ConformanceResponse")
+	proto.RegisterType((*TestAllTypes)(nil), "conformance.TestAllTypes")
+	proto.RegisterType((*TestAllTypes_NestedMessage)(nil), "conformance.TestAllTypes.NestedMessage")
+	proto.RegisterType((*ForeignMessage)(nil), "conformance.ForeignMessage")
+	proto.RegisterEnum("conformance.WireFormat", WireFormat_name, WireFormat_value)
+	proto.RegisterEnum("conformance.ForeignEnum", ForeignEnum_name, ForeignEnum_value)
+	proto.RegisterEnum("conformance.TestAllTypes_NestedEnum", TestAllTypes_NestedEnum_name, TestAllTypes_NestedEnum_value)
+}
+
+func init() { proto.RegisterFile("conformance_proto/conformance.proto", fileDescriptor0) }
+
+var fileDescriptor0 = []byte{
+	// 2731 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0x94, 0x5a, 0xd9, 0x72, 0xdb, 0xc8,
+	0xd5, 0x16, 0x08, 0x59, 0x4b, 0x93, 0x92, 0xa8, 0xd6, 0xd6, 0x96, 0x5d, 0x63, 0x58, 0xb2, 0x7f,
+	0xd3, 0xf6, 0x8c, 0x6c, 0x49, 0x30, 0x2c, 0x7b, 0xfe, 0x71, 0x2c, 0xda, 0xa4, 0x25, 0x67, 0x2c,
+	0xb9, 0x20, 0x6b, 0x5c, 0xe5, 0x5c, 0x30, 0x10, 0x05, 0xa9, 0x38, 0x26, 0x09, 0x0e, 0x40, 0x7a,
+	0xa2, 0x5c, 0xe6, 0x0d, 0xb2, 0xef, 0xeb, 0x7d, 0xd6, 0x9b, 0x24, 0x95, 0x5c, 0xa5, 0x72, 0x93,
+	0x3d, 0xa9, 0xec, 0xc9, 0x2b, 0xe4, 0x1d, 0x92, 0xea, 0x15, 0xdd, 0x0d, 0x80, 0xa2, 0xa7, 0x6a,
+	0x28, 0xf1, 0xe0, 0xeb, 0xef, 0x9c, 0x3e, 0xe7, 0xe0, 0x6b, 0xe1, 0xc0, 0x60, 0xb9, 0x1e, 0xb4,
+	0x8f, 0x82, 0xb0, 0xe5, 0xb5, 0xeb, 0x7e, 0xad, 0x13, 0x06, 0xdd, 0xe0, 0x86, 0x64, 0x59, 0x21,
+	0x16, 0x98, 0x97, 0x4c, 0x8b, 0x67, 0x8f, 0x83, 0xe0, 0xb8, 0xe9, 0xdf, 0x20, 0x97, 0x0e, 0x7a,
+	0x47, 0x37, 0xbc, 0xf6, 0x09, 0xc5, 0x2d, 0xbe, 0xa1, 0x5f, 0x3a, 0xec, 0x85, 0x5e, 0xb7, 0x11,
+	0xb4, 0xd9, 0x75, 0x4b, 0xbf, 0x7e, 0xd4, 0xf0, 0x9b, 0x87, 0xb5, 0x96, 0x17, 0xbd, 0x64, 0x88,
+	0xf3, 0x3a, 0x22, 0xea, 0x86, 0xbd, 0x7a, 0x97, 0x5d, 0xbd, 0xa0, 0x5f, 0xed, 0x36, 0x5a, 0x7e,
+	0xd4, 0xf5, 0x5a, 0x9d, 0xac, 0x00, 0x3e, 0x0c, 0xbd, 0x4e, 0xc7, 0x0f, 0x23, 0x7a, 0x7d, 0xe9,
+	0x17, 0x06, 0x80, 0x0f, 0xe2, 0xbd, 0xb8, 0xfe, 0x07, 0x3d, 0x3f, 0xea, 0xc2, 0xeb, 0xa0, 0xc8,
+	0x57, 0xd4, 0x3a, 0xde, 0x49, 0x33, 0xf0, 0x0e, 0x91, 0x61, 0x19, 0xa5, 0xc2, 0xd6, 0x90, 0x3b,
+	0xc5, 0xaf, 0x3c, 0xa5, 0x17, 0xe0, 0x32, 0x28, 0xbc, 0x1f, 0x05, 0x6d, 0x01, 0xcc, 0x59, 0x46,
+	0x69, 0x7c, 0x6b, 0xc8, 0xcd, 0x63, 0x2b, 0x07, 0xed, 0x82, 0x85, 0x90, 0x92, 0xfb, 0x87, 0xb5,
+	0xa0, 0xd7, 0xed, 0xf4, 0xba, 0x35, 0xe2, 0xb5, 0x8b, 0x4c, 0xcb, 0x28, 0x4d, 0xae, 0x2d, 0xac,
+	0xc8, 0x69, 0x7e, 0xde, 0x08, 0xfd, 0x2a, 0xb9, 0xec, 0xce, 0x89, 0x75, 0xbb, 0x64, 0x19, 0x35,
+	0x97, 0xc7, 0xc1, 0x28, 0x73, 0xb8, 0xf4, 0xa9, 0x1c, 0x98, 0x51, 0x36, 0x11, 0x75, 0x82, 0x76,
+	0xe4, 0xc3, 0x8b, 0x20, 0xdf, 0xf1, 0xc2, 0xc8, 0xaf, 0xf9, 0x61, 0x18, 0x84, 0x64, 0x03, 0x38,
+	0x2e, 0x40, 0x8c, 0x15, 0x6c, 0x83, 0x57, 0xc1, 0x54, 0xe4, 0x87, 0x0d, 0xaf, 0xd9, 0xf8, 0x24,
+	0x87, 0x8d, 0x30, 0xd8, 0xa4, 0xb8, 0x40, 0xa1, 0x97, 0xc1, 0x44, 0xd8, 0x6b, 0xe3, 0x04, 0x33,
+	0x20, 0xdf, 0x67, 0x81, 0x99, 0x29, 0x2c, 0x2d, 0x75, 0xe6, 0xa0, 0xa9, 0x1b, 0x4e, 0x4b, 0xdd,
+	0x22, 0x18, 0x8d, 0x5e, 0x36, 0x3a, 0x1d, 0xff, 0x10, 0x9d, 0x61, 0xd7, 0xb9, 0xa1, 0x3c, 0x06,
+	0x46, 0x42, 0x3f, 0xea, 0x35, 0xbb, 0x4b, 0xff, 0xa9, 0x82, 0xc2, 0x33, 0x3f, 0xea, 0x6e, 0x36,
+	0x9b, 0xcf, 0x4e, 0x3a, 0x7e, 0x04, 0x2f, 0x83, 0xc9, 0xa0, 0x83, 0x7b, 0xcd, 0x6b, 0xd6, 0x1a,
+	0xed, 0xee, 0xfa, 0x1a, 0x49, 0xc0, 0x19, 0x77, 0x82, 0x5b, 0xb7, 0xb1, 0x51, 0x87, 0x39, 0x36,
+	0xd9, 0x97, 0xa9, 0xc0, 0x1c, 0x1b, 0x5e, 0x01, 0x53, 0x02, 0xd6, 0xa3, 0x74, 0x78, 0x57, 0x13,
+	0xae, 0x58, 0xbd, 0x4f, 0xac, 0x09, 0xa0, 0x63, 0x93, 0x5d, 0x0d, 0xab, 0x40, 0x8d, 0x31, 0xa2,
+	0x8c, 0x78, 0x7b, 0xd3, 0x31, 0x70, 0x2f, 0xc9, 0x18, 0x51, 0x46, 0x5c, 0x23, 0xa8, 0x02, 0x1d,
+	0x1b, 0x5e, 0x05, 0x45, 0x01, 0x3c, 0x6a, 0x7c, 0xc2, 0x3f, 0x5c, 0x5f, 0x43, 0xa3, 0x96, 0x51,
+	0x1a, 0x75, 0x05, 0x41, 0x95, 0x9a, 0x93, 0x50, 0xc7, 0x46, 0x63, 0x96, 0x51, 0x1a, 0xd1, 0xa0,
+	0x8e, 0x0d, 0xaf, 0x83, 0xe9, 0xd8, 0x3d, 0xa7, 0x1d, 0xb7, 0x8c, 0xd2, 0x94, 0x2b, 0x38, 0xf6,
+	0x98, 0x3d, 0x05, 0xec, 0xd8, 0x08, 0x58, 0x46, 0xa9, 0xa8, 0x83, 0x1d, 0x5b, 0x49, 0xfd, 0x51,
+	0x33, 0xf0, 0xba, 0x28, 0x6f, 0x19, 0xa5, 0x5c, 0x9c, 0xfa, 0x2a, 0x36, 0x2a, 0xfb, 0x3f, 0x0c,
+	0x7a, 0x07, 0x4d, 0x1f, 0x15, 0x2c, 0xa3, 0x64, 0xc4, 0xfb, 0x7f, 0x48, 0xac, 0x70, 0x19, 0x88,
+	0x95, 0xb5, 0x83, 0x20, 0x68, 0xa2, 0x09, 0xcb, 0x28, 0x8d, 0xb9, 0x05, 0x6e, 0x2c, 0x07, 0x41,
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+	0x9f, 0xcc, 0x32, 0x92, 0xc2, 0x32, 0x22, 0xb3, 0x54, 0x01, 0xca, 0x1a, 0xef, 0xc9, 0x3c, 0x53,
+	0x29, 0x3c, 0x53, 0x59, 0x3c, 0xda, 0xf8, 0x4e, 0xe6, 0x29, 0xa6, 0xf0, 0x14, 0x53, 0xbb, 0x4d,
+	0x1e, 0xd2, 0x9d, 0xd6, 0xaf, 0x39, 0x99, 0x61, 0x13, 0xcc, 0xa4, 0xcc, 0xe3, 0x4e, 0xa3, 0x30,
+	0x64, 0x8a, 0x7b, 0xa0, 0xa8, 0x0f, 0xdf, 0xe4, 0xf5, 0x63, 0x29, 0xeb, 0xc7, 0x52, 0x9a, 0x44,
+	0x1f, 0xb4, 0xc9, 0x1c, 0xe3, 0x29, 0x1c, 0xe3, 0xc9, 0x6d, 0xe8, 0x13, 0xb5, 0xd3, 0x28, 0x0a,
+	0x32, 0x45, 0x08, 0xce, 0xf5, 0x19, 0x99, 0xa5, 0x50, 0xbd, 0x23, 0x53, 0xbd, 0xc6, 0xfb, 0x2a,
+	0xc9, 0xe7, 0x31, 0x38, 0xdf, 0x6f, 0x66, 0x96, 0xe2, 0x74, 0x55, 0x75, 0xda, 0xf7, 0x15, 0x96,
+	0xe4, 0xa8, 0x49, 0x1b, 0x2e, 0x6d, 0x56, 0x96, 0xe2, 0xe4, 0xae, 0xec, 0x64, 0xd0, 0x97, 0x5a,
+	0x92, 0x37, 0x0f, 0x9c, 0xcd, 0x9c, 0x97, 0xa5, 0xb8, 0x5b, 0x51, 0xdd, 0x65, 0xbf, 0xea, 0x8a,
+	0x5d, 0x2c, 0xdd, 0x01, 0x40, 0x9a, 0xec, 0x8d, 0x02, 0xb3, 0xba, 0xbb, 0x5b, 0x1c, 0xc2, 0xbf,
+	0x94, 0x37, 0xdd, 0xa2, 0x41, 0x7f, 0x79, 0x51, 0xcc, 0x61, 0x77, 0x3b, 0x95, 0x47, 0xc5, 0xff,
+	0xf2, 0xff, 0x8c, 0xf2, 0x84, 0x18, 0x45, 0xe1, 0x53, 0x65, 0xe9, 0x0d, 0x30, 0xa9, 0x0d, 0x24,
+	0x0b, 0xc0, 0xa8, 0xf3, 0x03, 0xa5, 0x7e, 0xed, 0x16, 0x00, 0xf1, 0xbf, 0x61, 0x82, 0x53, 0x20,
+	0xbf, 0xbf, 0xb3, 0xf7, 0xb4, 0xf2, 0x60, 0xbb, 0xba, 0x5d, 0x79, 0x58, 0x1c, 0x82, 0x05, 0x30,
+	0xf6, 0xd4, 0xdd, 0x7d, 0xb6, 0x5b, 0xde, 0xaf, 0x16, 0x0d, 0x38, 0x06, 0x86, 0x1f, 0xef, 0xed,
+	0xee, 0x14, 0x73, 0xd7, 0xee, 0x83, 0xbc, 0x3c, 0x0f, 0x9c, 0x02, 0xf9, 0xea, 0xae, 0x5b, 0xd9,
+	0x7e, 0xb4, 0x53, 0xa3, 0x91, 0x4a, 0x06, 0x1a, 0xb1, 0x62, 0x78, 0x51, 0xcc, 0x95, 0x2f, 0x82,
+	0x0b, 0xf5, 0xa0, 0x95, 0xf8, 0xc3, 0x4c, 0x4a, 0xce, 0xc1, 0x08, 0xb1, 0xae, 0xff, 0x2f, 0x00,
+	0x00, 0xff, 0xff, 0x46, 0x1f, 0xdb, 0xdc, 0xeb, 0x26, 0x00, 0x00,
+}
diff --git a/_conformance/conformance_proto/conformance.proto b/_conformance/conformance_proto/conformance.proto
new file mode 100644
index 0000000..95a8fd1
--- /dev/null
+++ b/_conformance/conformance_proto/conformance.proto
@@ -0,0 +1,285 @@
+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 Google Inc.  All rights reserved.
+// https://developers.google.com/protocol-buffers/
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+syntax = "proto3";
+package conformance;
+option java_package = "com.google.protobuf.conformance";
+
+import "google/protobuf/any.proto";
+import "google/protobuf/duration.proto";
+import "google/protobuf/field_mask.proto";
+import "google/protobuf/struct.proto";
+import "google/protobuf/timestamp.proto";
+import "google/protobuf/wrappers.proto";
+
+// This defines the conformance testing protocol.  This protocol exists between
+// the conformance test suite itself and the code being tested.  For each test,
+// the suite will send a ConformanceRequest message and expect a
+// ConformanceResponse message.
+//
+// You can either run the tests in two different ways:
+//
+//   1. in-process (using the interface in conformance_test.h).
+//
+//   2. as a sub-process communicating over a pipe.  Information about how to
+//      do this is in conformance_test_runner.cc.
+//
+// Pros/cons of the two approaches:
+//
+//   - running as a sub-process is much simpler for languages other than C/C++.
+//
+//   - running as a sub-process may be more tricky in unusual environments like
+//     iOS apps, where fork/stdin/stdout are not available.
+
+enum WireFormat {
+  UNSPECIFIED = 0;
+  PROTOBUF = 1;
+  JSON = 2;
+}
+
+// Represents a single test case's input.  The testee should:
+//
+//   1. parse this proto (which should always succeed)
+//   2. parse the protobuf or JSON payload in "payload" (which may fail)
+//   3. if the parse succeeded, serialize the message in the requested format.
+message ConformanceRequest {
+  // The payload (whether protobuf of JSON) is always for a TestAllTypes proto
+  // (see below).
+  oneof payload {
+    bytes protobuf_payload = 1;
+    string json_payload = 2;
+  }
+
+  // Which format should the testee serialize its message to?
+  WireFormat requested_output_format = 3;
+}
+
+// Represents a single test case's output.
+message ConformanceResponse {
+  oneof result {
+    // This string should be set to indicate parsing failed.  The string can
+    // provide more information about the parse error if it is available.
+    //
+    // Setting this string does not necessarily mean the testee failed the
+    // test.  Some of the test cases are intentionally invalid input.
+    string parse_error = 1;
+
+    // If the input was successfully parsed but errors occurred when
+    // serializing it to the requested output format, set the error message in
+    // this field.
+    string serialize_error = 6;
+
+    // This should be set if some other error occurred.  This will always
+    // indicate that the test failed.  The string can provide more information
+    // about the failure.
+    string runtime_error = 2;
+
+    // If the input was successfully parsed and the requested output was
+    // protobuf, serialize it to protobuf and set it in this field.
+    bytes protobuf_payload = 3;
+
+    // If the input was successfully parsed and the requested output was JSON,
+    // serialize to JSON and set it in this field.
+    string json_payload = 4;
+
+    // For when the testee skipped the test, likely because a certain feature
+    // wasn't supported, like JSON input/output.
+    string skipped = 5;
+  }
+}
+
+// This proto includes every type of field in both singular and repeated
+// forms.
+message TestAllTypes {
+  message NestedMessage {
+    int32 a = 1;
+    TestAllTypes corecursive = 2;
+  }
+
+  enum NestedEnum {
+    FOO = 0;
+    BAR = 1;
+    BAZ = 2;
+    NEG = -1;  // Intentionally negative.
+  }
+
+  // Singular
+  int32 optional_int32    =  1;
+  int64 optional_int64    =  2;
+  uint32 optional_uint32   =  3;
+  uint64 optional_uint64   =  4;
+  sint32 optional_sint32   =  5;
+  sint64 optional_sint64   =  6;
+  fixed32 optional_fixed32  =  7;
+  fixed64 optional_fixed64  =  8;
+  sfixed32 optional_sfixed32 =  9;
+  sfixed64 optional_sfixed64 = 10;
+  float optional_float    = 11;
+  double optional_double   = 12;
+  bool optional_bool     = 13;
+  string optional_string   = 14;
+  bytes optional_bytes    = 15;
+
+  NestedMessage                        optional_nested_message  = 18;
+  ForeignMessage                       optional_foreign_message = 19;
+
+  NestedEnum                           optional_nested_enum     = 21;
+  ForeignEnum                          optional_foreign_enum    = 22;
+
+  string optional_string_piece = 24 [ctype=STRING_PIECE];
+  string optional_cord = 25 [ctype=CORD];
+
+  TestAllTypes recursive_message = 27;
+
+  // Repeated
+  repeated    int32 repeated_int32    = 31;
+  repeated    int64 repeated_int64    = 32;
+  repeated   uint32 repeated_uint32   = 33;
+  repeated   uint64 repeated_uint64   = 34;
+  repeated   sint32 repeated_sint32   = 35;
+  repeated   sint64 repeated_sint64   = 36;
+  repeated  fixed32 repeated_fixed32  = 37;
+  repeated  fixed64 repeated_fixed64  = 38;
+  repeated sfixed32 repeated_sfixed32 = 39;
+  repeated sfixed64 repeated_sfixed64 = 40;
+  repeated    float repeated_float    = 41;
+  repeated   double repeated_double   = 42;
+  repeated     bool repeated_bool     = 43;
+  repeated   string repeated_string   = 44;
+  repeated    bytes repeated_bytes    = 45;
+
+  repeated NestedMessage                        repeated_nested_message  = 48;
+  repeated ForeignMessage                       repeated_foreign_message = 49;
+
+  repeated NestedEnum                           repeated_nested_enum     = 51;
+  repeated ForeignEnum                          repeated_foreign_enum    = 52;
+
+  repeated string repeated_string_piece = 54 [ctype=STRING_PIECE];
+  repeated string repeated_cord = 55 [ctype=CORD];
+
+  // Map
+  map <   int32, int32>    map_int32_int32 = 56;
+  map <   int64, int64>    map_int64_int64 = 57;
+  map <  uint32, uint32>   map_uint32_uint32 = 58;
+  map <  uint64, uint64>   map_uint64_uint64 = 59;
+  map <  sint32, sint32>   map_sint32_sint32 = 60;
+  map <  sint64, sint64>   map_sint64_sint64 = 61;
+  map < fixed32, fixed32>  map_fixed32_fixed32 = 62;
+  map < fixed64, fixed64>  map_fixed64_fixed64 = 63;
+  map <sfixed32, sfixed32> map_sfixed32_sfixed32 = 64;
+  map <sfixed64, sfixed64> map_sfixed64_sfixed64 = 65;
+  map <   int32, float>    map_int32_float = 66;
+  map <   int32, double>   map_int32_double = 67;
+  map <    bool, bool>     map_bool_bool = 68;
+  map <  string, string>   map_string_string = 69;
+  map <  string, bytes>    map_string_bytes = 70;
+  map <  string, NestedMessage>  map_string_nested_message = 71;
+  map <  string, ForeignMessage> map_string_foreign_message = 72;
+  map <  string, NestedEnum>     map_string_nested_enum = 73;
+  map <  string, ForeignEnum>    map_string_foreign_enum = 74;
+
+  oneof oneof_field {
+    uint32 oneof_uint32 = 111;
+    NestedMessage oneof_nested_message = 112;
+    string oneof_string = 113;
+    bytes oneof_bytes = 114;
+    bool oneof_bool = 115;
+    uint64 oneof_uint64 = 116;
+    float oneof_float = 117;
+    double oneof_double = 118;
+    NestedEnum oneof_enum = 119;
+  }
+
+  // Well-known types
+  google.protobuf.BoolValue optional_bool_wrapper = 201;
+  google.protobuf.Int32Value optional_int32_wrapper = 202;
+  google.protobuf.Int64Value optional_int64_wrapper = 203;
+  google.protobuf.UInt32Value optional_uint32_wrapper = 204;
+  google.protobuf.UInt64Value optional_uint64_wrapper = 205;
+  google.protobuf.FloatValue optional_float_wrapper = 206;
+  google.protobuf.DoubleValue optional_double_wrapper = 207;
+  google.protobuf.StringValue optional_string_wrapper = 208;
+  google.protobuf.BytesValue optional_bytes_wrapper = 209;
+
+  repeated google.protobuf.BoolValue repeated_bool_wrapper = 211;
+  repeated google.protobuf.Int32Value repeated_int32_wrapper = 212;
+  repeated google.protobuf.Int64Value repeated_int64_wrapper = 213;
+  repeated google.protobuf.UInt32Value repeated_uint32_wrapper = 214;
+  repeated google.protobuf.UInt64Value repeated_uint64_wrapper = 215;
+  repeated google.protobuf.FloatValue repeated_float_wrapper = 216;
+  repeated google.protobuf.DoubleValue repeated_double_wrapper = 217;
+  repeated google.protobuf.StringValue repeated_string_wrapper = 218;
+  repeated google.protobuf.BytesValue repeated_bytes_wrapper = 219;
+
+  google.protobuf.Duration optional_duration = 301;
+  google.protobuf.Timestamp optional_timestamp = 302;
+  google.protobuf.FieldMask optional_field_mask = 303;
+  google.protobuf.Struct optional_struct = 304;
+  google.protobuf.Any optional_any = 305;
+  google.protobuf.Value optional_value = 306;
+
+  repeated google.protobuf.Duration repeated_duration = 311;
+  repeated google.protobuf.Timestamp repeated_timestamp = 312;
+  repeated google.protobuf.FieldMask repeated_fieldmask = 313;
+  repeated google.protobuf.Struct repeated_struct = 324;
+  repeated google.protobuf.Any repeated_any = 315;
+  repeated google.protobuf.Value repeated_value = 316;
+
+  // Test field-name-to-JSON-name convention.
+  // (protobuf says names can be any valid C/C++ identifier.)
+  int32 fieldname1 = 401;
+  int32 field_name2 = 402;
+  int32 _field_name3 = 403;
+  int32 field__name4_ = 404;
+  int32 field0name5 = 405;
+  int32 field_0_name6 = 406;
+  int32 fieldName7 = 407;
+  int32 FieldName8 = 408;
+  int32 field_Name9 = 409;
+  int32 Field_Name10 = 410;
+  int32 FIELD_NAME11 = 411;
+  int32 FIELD_name12 = 412;
+  int32 __field_name13 = 413;
+  int32 __Field_name14 = 414;
+  int32 field__name15 = 415;
+  int32 field__Name16 = 416;
+  int32 field_name17__ = 417;
+  int32 Field_name18__ = 418;
+}
+
+message ForeignMessage {
+  int32 c = 1;
+}
+
+enum ForeignEnum {
+  FOREIGN_FOO = 0;
+  FOREIGN_BAR = 1;
+  FOREIGN_BAZ = 2;
+}