Merge branch '3.1.x' of github.com:google/protobuf into 3.1.x

23 files changed, 371 insertions, 588 deletions

diff --git a/Protobuf.podspec b/Protobuf.podspec
index 2aebdda4..217f6d20 100644
--- a/Protobuf.podspec
+++ b/Protobuf.podspec
@@ -5,7 +5,7 @@
 # dependent projects use the :git notation to refer to the library.
 Pod::Spec.new do |s|
   s.name     = 'Protobuf'
-  s.version  = '3.1.0-alpha-1'
+  s.version  = '3.1.0'
   s.summary  = 'Protocol Buffers v.3 runtime library for Objective-C.'
   s.homepage = 'https://github.com/google/protobuf'
   s.license  = 'New BSD'
diff --git a/configure.ac b/configure.ac
index c21990b5..a454bbe0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -17,7 +17,7 @@ AC_PREREQ(2.59)
 # In the SVN trunk, the version should always be the next anticipated release
 # version with the "-pre" suffix.  (We used to use "-SNAPSHOT" but this pushed
 # the size of one file name in the dist tarfile over the 99-char limit.)
-AC_INIT([Protocol Buffers],[3.1.0-alpha-1],[protobuf@googlegroups.com],[protobuf])
+AC_INIT([Protocol Buffers],[3.1.0],[protobuf@googlegroups.com],[protobuf])
 
 AM_MAINTAINER_MODE([enable])
 
diff --git a/csharp/Google.Protobuf.Tools.nuspec b/csharp/Google.Protobuf.Tools.nuspec
index 79f32bab..d079c683 100644
--- a/csharp/Google.Protobuf.Tools.nuspec
+++ b/csharp/Google.Protobuf.Tools.nuspec
@@ -5,7 +5,7 @@
     <title>Google Protocol Buffers tools</title>
     <summary>Tools for Protocol Buffers - Google's data interchange format.</summary>
     <description>See project site for more info.</description>
-    <version>3.1.0-alpha1</version>
+    <version>3.1.0</version>
     <authors>Google Inc.</authors>
     <owners>protobuf-packages</owners>
     <licenseUrl>https://github.com/google/protobuf/blob/master/LICENSE</licenseUrl>
diff --git a/csharp/src/Google.Protobuf/Reflection/Descriptor.cs b/csharp/src/Google.Protobuf/Reflection/Descriptor.cs
index 1bb2b48e..19155469 100644
--- a/csharp/src/Google.Protobuf/Reflection/Descriptor.cs
+++ b/csharp/src/Google.Protobuf/Reflection/Descriptor.cs
@@ -80,65 +80,66 @@ namespace Google.Protobuf.Reflection {
             "ASgJEhMKC291dHB1dF90eXBlGAMgASgJEi8KB29wdGlvbnMYBCABKAsyHi5n",
             "b29nbGUucHJvdG9idWYuTWV0aG9kT3B0aW9ucxIfChBjbGllbnRfc3RyZWFt",
             "aW5nGAUgASgIOgVmYWxzZRIfChBzZXJ2ZXJfc3RyZWFtaW5nGAYgASgIOgVm",
-            "YWxzZSLZBAoLRmlsZU9wdGlvbnMSFAoMamF2YV9wYWNrYWdlGAEgASgJEhwK",
+            "YWxzZSKEBQoLRmlsZU9wdGlvbnMSFAoMamF2YV9wYWNrYWdlGAEgASgJEhwK",
             "FGphdmFfb3V0ZXJfY2xhc3NuYW1lGAggASgJEiIKE2phdmFfbXVsdGlwbGVf",
-            "ZmlsZXMYCiABKAg6BWZhbHNlEiUKFmphdmFfc3RyaW5nX2NoZWNrX3V0ZjgY",
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-            "cm90b2J1Zi5GaWxlT3B0aW9ucy5PcHRpbWl6ZU1vZGU6BVNQRUVEEhIKCmdv",
-            "X3BhY2thZ2UYCyABKAkSIgoTY2NfZ2VuZXJpY19zZXJ2aWNlcxgQIAEoCDoF",
-            "ZmFsc2USJAoVamF2YV9nZW5lcmljX3NlcnZpY2VzGBEgASgIOgVmYWxzZRIi",
-            "ChNweV9nZW5lcmljX3NlcnZpY2VzGBIgASgIOgVmYWxzZRIZCgpkZXByZWNh",
-            "dGVkGBcgASgIOgVmYWxzZRIfChBjY19lbmFibGVfYXJlbmFzGB8gASgIOgVm",
-            "YWxzZRIZChFvYmpjX2NsYXNzX3ByZWZpeBgkIAEoCRIYChBjc2hhcnBfbmFt",
-            "ZXNwYWNlGCUgASgJEkMKFHVuaW50ZXJwcmV0ZWRfb3B0aW9uGOcHIAMoCzIk",
-            "Lmdvb2dsZS5wcm90b2J1Zi5VbmludGVycHJldGVkT3B0aW9uIjoKDE9wdGlt",
-            "aXplTW9kZRIJCgVTUEVFRBABEg0KCUNPREVfU0laRRACEhAKDExJVEVfUlVO",
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-            "Y2F0ZWQYAyABKAg6BWZhbHNlEhMKBHdlYWsYCiABKAg6BWZhbHNlEkMKFHVu",
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+            "dG9idWYuRmlsZU9wdGlvbnMuT3B0aW1pemVNb2RlOgVTUEVFRBISCgpnb19w",
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+            "b29nbGUucHJvdG9idWYuVW5pbnRlcnByZXRlZE9wdGlvbiI6CgxPcHRpbWl6",
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+            "TUUQAyoJCOgHEICAgIACSgQIJhAnIuwBCg5NZXNzYWdlT3B0aW9ucxImChdt",
+            "ZXNzYWdlX3NldF93aXJlX2Zvcm1hdBgBIAEoCDoFZmFsc2USLgofbm9fc3Rh",
+            "bmRhcmRfZGVzY3JpcHRvcl9hY2Nlc3NvchgCIAEoCDoFZmFsc2USGQoKZGVw",
+            "cmVjYXRlZBgDIAEoCDoFZmFsc2USEQoJbWFwX2VudHJ5GAcgASgIEkMKFHVu",
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-            "bmludGVycHJldGVkT3B0aW9uIi8KBUNUeXBlEgoKBlNUUklORxAAEggKBENP",
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-            "Zi5VbmludGVycHJldGVkT3B0aW9uLk5hbWVQYXJ0EhgKEGlkZW50aWZpZXJf",
-            "dmFsdWUYAyABKAkSGgoScG9zaXRpdmVfaW50X3ZhbHVlGAQgASgEEhoKEm5l",
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-            "ogIDR1BCqgIaR29vZ2xlLlByb3RvYnVmLlJlZmxlY3Rpb24="));
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+            "CExvY2F0aW9uEhAKBHBhdGgYASADKAVCAhABEhAKBHNwYW4YAiADKAVCAhAB",
+            "EhgKEGxlYWRpbmdfY29tbWVudHMYAyABKAkSGQoRdHJhaWxpbmdfY29tbWVu",
+            "dHMYBCABKAkSIQoZbGVhZGluZ19kZXRhY2hlZF9jb21tZW50cxgGIAMoCSKn",
+            "AQoRR2VuZXJhdGVkQ29kZUluZm8SQQoKYW5ub3RhdGlvbhgBIAMoCzItLmdv",
+            "b2dsZS5wcm90b2J1Zi5HZW5lcmF0ZWRDb2RlSW5mby5Bbm5vdGF0aW9uGk8K",
+            "CkFubm90YXRpb24SEAoEcGF0aBgBIAMoBUICEAESEwoLc291cmNlX2ZpbGUY",
+            "AiABKAkSDQoFYmVnaW4YAyABKAUSCwoDZW5kGAQgASgFQlgKE2NvbS5nb29n",
+            "bGUucHJvdG9idWZCEERlc2NyaXB0b3JQcm90b3NIAVoKZGVzY3JpcHRvcqIC",
+            "A0dQQqoCGkdvb2dsZS5Qcm90b2J1Zi5SZWZsZWN0aW9u"));
       descriptor = pbr::FileDescriptor.FromGeneratedCode(descriptorData,
           new pbr::FileDescriptor[] { },
           new pbr::GeneratedClrTypeInfo(null, new pbr::GeneratedClrTypeInfo[] {
@@ -152,7 +153,7 @@ namespace Google.Protobuf.Reflection {
             new pbr::GeneratedClrTypeInfo(typeof(global::Google.Protobuf.Reflection.EnumValueDescriptorProto), global::Google.Protobuf.Reflection.EnumValueDescriptorProto.Parser, new[]{ "Name", "Number", "Options" }, null, null, null),
             new pbr::GeneratedClrTypeInfo(typeof(global::Google.Protobuf.Reflection.ServiceDescriptorProto), global::Google.Protobuf.Reflection.ServiceDescriptorProto.Parser, new[]{ "Name", "Method", "Options" }, null, null, null),
             new pbr::GeneratedClrTypeInfo(typeof(global::Google.Protobuf.Reflection.MethodDescriptorProto), global::Google.Protobuf.Reflection.MethodDescriptorProto.Parser, new[]{ "Name", "InputType", "OutputType", "Options", "ClientStreaming", "ServerStreaming" }, null, null, null),
-            new pbr::GeneratedClrTypeInfo(typeof(global::Google.Protobuf.Reflection.FileOptions), global::Google.Protobuf.Reflection.FileOptions.Parser, new[]{ "JavaPackage", "JavaOuterClassname", "JavaMultipleFiles", "JavaStringCheckUtf8", "OptimizeFor", "GoPackage", "CcGenericServices", "JavaGenericServices", "PyGenericServices", "Deprecated", "CcEnableArenas", "ObjcClassPrefix", "CsharpNamespace", "UninterpretedOption" }, null, new[]{ typeof(global::Google.Protobuf.Reflection.FileOptions.Types.OptimizeMode) }, null),
+            new pbr::GeneratedClrTypeInfo(typeof(global::Google.Protobuf.Reflection.FileOptions), global::Google.Protobuf.Reflection.FileOptions.Parser, new[]{ "JavaPackage", "JavaOuterClassname", "JavaMultipleFiles", "JavaGenerateEqualsAndHash", "JavaStringCheckUtf8", "OptimizeFor", "GoPackage", "CcGenericServices", "JavaGenericServices", "PyGenericServices", "Deprecated", "CcEnableArenas", "ObjcClassPrefix", "CsharpNamespace", "UninterpretedOption" }, null, new[]{ typeof(global::Google.Protobuf.Reflection.FileOptions.Types.OptimizeMode) }, null),
             new pbr::GeneratedClrTypeInfo(typeof(global::Google.Protobuf.Reflection.MessageOptions), global::Google.Protobuf.Reflection.MessageOptions.Parser, new[]{ "MessageSetWireFormat", "NoStandardDescriptorAccessor", "Deprecated", "MapEntry", "UninterpretedOption" }, null, null, null),
             new pbr::GeneratedClrTypeInfo(typeof(global::Google.Protobuf.Reflection.FieldOptions), global::Google.Protobuf.Reflection.FieldOptions.Parser, new[]{ "Ctype", "Packed", "Jstype", "Lazy", "Deprecated", "Weak", "UninterpretedOption" }, null, new[]{ typeof(global::Google.Protobuf.Reflection.FieldOptions.Types.CType), typeof(global::Google.Protobuf.Reflection.FieldOptions.Types.JSType) }, null),
             new pbr::GeneratedClrTypeInfo(typeof(global::Google.Protobuf.Reflection.OneofOptions), global::Google.Protobuf.Reflection.OneofOptions.Parser, new[]{ "UninterpretedOption" }, null, null, null),
@@ -2787,6 +2788,7 @@ namespace Google.Protobuf.Reflection {
       javaPackage_ = other.javaPackage_;
       javaOuterClassname_ = other.javaOuterClassname_;
       javaMultipleFiles_ = other.javaMultipleFiles_;
+      javaGenerateEqualsAndHash_ = other.javaGenerateEqualsAndHash_;
       javaStringCheckUtf8_ = other.javaStringCheckUtf8_;
       optimizeFor_ = other.optimizeFor_;
       goPackage_ = other.goPackage_;
@@ -2859,6 +2861,21 @@ namespace Google.Protobuf.Reflection {
       }
     }
 
+    /// <summary>Field number for the "java_generate_equals_and_hash" field.</summary>
+    public const int JavaGenerateEqualsAndHashFieldNumber = 20;
+    private bool javaGenerateEqualsAndHash_;
+    /// <summary>
+    ///  This option does nothing.
+    /// </summary>
+    [global::System.ObsoleteAttribute]
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
+    public bool JavaGenerateEqualsAndHash {
+      get { return javaGenerateEqualsAndHash_; }
+      set {
+        javaGenerateEqualsAndHash_ = value;
+      }
+    }
+
     /// <summary>Field number for the "java_string_check_utf8" field.</summary>
     public const int JavaStringCheckUtf8FieldNumber = 27;
     private bool javaStringCheckUtf8_;
@@ -3042,6 +3059,7 @@ namespace Google.Protobuf.Reflection {
       if (JavaPackage != other.JavaPackage) return false;
       if (JavaOuterClassname != other.JavaOuterClassname) return false;
       if (JavaMultipleFiles != other.JavaMultipleFiles) return false;
+      if (JavaGenerateEqualsAndHash != other.JavaGenerateEqualsAndHash) return false;
       if (JavaStringCheckUtf8 != other.JavaStringCheckUtf8) return false;
       if (OptimizeFor != other.OptimizeFor) return false;
       if (GoPackage != other.GoPackage) return false;
@@ -3062,6 +3080,7 @@ namespace Google.Protobuf.Reflection {
       if (JavaPackage.Length != 0) hash ^= JavaPackage.GetHashCode();
       if (JavaOuterClassname.Length != 0) hash ^= JavaOuterClassname.GetHashCode();
       if (JavaMultipleFiles != false) hash ^= JavaMultipleFiles.GetHashCode();
+      if (JavaGenerateEqualsAndHash != false) hash ^= JavaGenerateEqualsAndHash.GetHashCode();
       if (JavaStringCheckUtf8 != false) hash ^= JavaStringCheckUtf8.GetHashCode();
       if (OptimizeFor != 0) hash ^= OptimizeFor.GetHashCode();
       if (GoPackage.Length != 0) hash ^= GoPackage.GetHashCode();
@@ -3115,6 +3134,10 @@ namespace Google.Protobuf.Reflection {
         output.WriteRawTag(144, 1);
         output.WriteBool(PyGenericServices);
       }
+      if (JavaGenerateEqualsAndHash != false) {
+        output.WriteRawTag(160, 1);
+        output.WriteBool(JavaGenerateEqualsAndHash);
+      }
       if (Deprecated != false) {
         output.WriteRawTag(184, 1);
         output.WriteBool(Deprecated);
@@ -3150,6 +3173,9 @@ namespace Google.Protobuf.Reflection {
       if (JavaMultipleFiles != false) {
         size += 1 + 1;
       }
+      if (JavaGenerateEqualsAndHash != false) {
+        size += 2 + 1;
+      }
       if (JavaStringCheckUtf8 != false) {
         size += 2 + 1;
       }
@@ -3198,6 +3224,9 @@ namespace Google.Protobuf.Reflection {
       if (other.JavaMultipleFiles != false) {
         JavaMultipleFiles = other.JavaMultipleFiles;
       }
+      if (other.JavaGenerateEqualsAndHash != false) {
+        JavaGenerateEqualsAndHash = other.JavaGenerateEqualsAndHash;
+      }
       if (other.JavaStringCheckUtf8 != false) {
         JavaStringCheckUtf8 = other.JavaStringCheckUtf8;
       }
@@ -3271,6 +3300,10 @@ namespace Google.Protobuf.Reflection {
             PyGenericServices = input.ReadBool();
             break;
           }
+          case 160: {
+            JavaGenerateEqualsAndHash = input.ReadBool();
+            break;
+          }
           case 184: {
             Deprecated = input.ReadBool();
             break;
diff --git a/csharp/src/Google.Protobuf/project.json b/csharp/src/Google.Protobuf/project.json
index dd958c98..12e86248 100644
--- a/csharp/src/Google.Protobuf/project.json
+++ b/csharp/src/Google.Protobuf/project.json
@@ -1,5 +1,5 @@
 {
-  "version": "3.1.0-alpha-1",
+  "version": "3.1.0",
   "title": "Google Protocol Buffers",
   "description": "See project site for more info.",
   "authors": [ "Google Inc." ],
diff --git a/java/core/pom.xml b/java/core/pom.xml
index 790f0af3..8a83eb4e 100644
--- a/java/core/pom.xml
+++ b/java/core/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>com.google.protobuf</groupId>
     <artifactId>protobuf-parent</artifactId>
-    <version>3.1.0-alpha-1</version>
+    <version>3.1.0</version>
   </parent>
 
   <artifactId>protobuf-java</artifactId>
diff --git a/java/core/src/main/java/com/google/protobuf/GeneratedMessageV3.java b/java/core/src/main/java/com/google/protobuf/GeneratedMessageV3.java
index 5c0b9967..4cbbd296 100644
--- a/java/core/src/main/java/com/google/protobuf/GeneratedMessageV3.java
+++ b/java/core/src/main/java/com/google/protobuf/GeneratedMessageV3.java
@@ -36,6 +36,7 @@ import com.google.protobuf.Descriptors.EnumValueDescriptor;
 import com.google.protobuf.Descriptors.FieldDescriptor;
 import com.google.protobuf.Descriptors.FileDescriptor;
 import com.google.protobuf.Descriptors.OneofDescriptor;
+import com.google.protobuf.GeneratedMessage.GeneratedExtension;
 
 import java.io.IOException;
 import java.io.InputStream;
@@ -1609,356 +1610,6 @@ public abstract class GeneratedMessageV3 extends AbstractMessage
     FieldDescriptor getDescriptor();
   }
 
-  /** For use by generated code only. */
-  public static <ContainingType extends Message, Type>
-      GeneratedExtension<ContainingType, Type>
-      newMessageScopedGeneratedExtension(final Message scope,
-                                         final int descriptorIndex,
-                                         final Class singularType,
-                                         final Message defaultInstance) {
-    // For extensions scoped within a Message, we use the Message to resolve
-    // the outer class's descriptor, from which the extension descriptor is
-    // obtained.
-    return new GeneratedExtension<ContainingType, Type>(
-        new CachedDescriptorRetriever() {
-          @Override
-          public FieldDescriptor loadDescriptor() {
-            return scope.getDescriptorForType().getExtensions().get(descriptorIndex);
-          }
-        },
-        singularType,
-        defaultInstance,
-        Extension.ExtensionType.IMMUTABLE);
-  }
-
-  /** For use by generated code only. */
-  public static <ContainingType extends Message, Type>
-     GeneratedExtension<ContainingType, Type>
-     newFileScopedGeneratedExtension(final Class singularType,
-                                     final Message defaultInstance) {
-    // For extensions scoped within a file, we rely on the outer class's
-    // static initializer to call internalInit() on the extension when the
-    // descriptor is available.
-    return new GeneratedExtension<ContainingType, Type>(
-        null,  // ExtensionDescriptorRetriever is initialized in internalInit();
-        singularType,
-        defaultInstance,
-        Extension.ExtensionType.IMMUTABLE);
-  }
-
-  private abstract static class CachedDescriptorRetriever
-      implements ExtensionDescriptorRetriever {
-    private volatile FieldDescriptor descriptor;
-    protected abstract FieldDescriptor loadDescriptor();
-
-    @Override
-    public FieldDescriptor getDescriptor() {
-      if (descriptor == null) {
-        synchronized (this) {
-          if (descriptor == null) {
-            descriptor = loadDescriptor();
-          }
-        }
-      }
-      return descriptor;
-    }
-  }
-
-  /**
-   * Used in proto1 generated code only.
-   *
-   * After enabling bridge, we can define proto2 extensions (the extended type
-   * is a proto2 mutable message) in a proto1 .proto file. For these extensions
-   * we should generate proto2 GeneratedExtensions.
-   */
-  public static <ContainingType extends Message, Type>
-      GeneratedExtension<ContainingType, Type>
-      newMessageScopedGeneratedExtension(
-          final Message scope, final String name,
-          final Class singularType, final Message defaultInstance) {
-    // For extensions scoped within a Message, we use the Message to resolve
-    // the outer class's descriptor, from which the extension descriptor is
-    // obtained.
-    return new GeneratedExtension<ContainingType, Type>(
-        new CachedDescriptorRetriever() {
-          @Override
-          protected FieldDescriptor loadDescriptor() {
-            return scope.getDescriptorForType().findFieldByName(name);
-          }
-        },
-        singularType,
-        defaultInstance,
-        Extension.ExtensionType.MUTABLE);
-  }
-
-  /**
-   * Used in proto1 generated code only.
-   *
-   * After enabling bridge, we can define proto2 extensions (the extended type
-   * is a proto2 mutable message) in a proto1 .proto file. For these extensions
-   * we should generate proto2 GeneratedExtensions.
-   */
-  public static <ContainingType extends Message, Type>
-     GeneratedExtension<ContainingType, Type>
-     newFileScopedGeneratedExtension(
-         final Class singularType, final Message defaultInstance,
-         final String descriptorOuterClass, final String extensionName) {
-    // For extensions scoped within a file, we load the descriptor outer
-    // class and rely on it to get the FileDescriptor which then can be
-    // used to obtain the extension's FieldDescriptor.
-    return new GeneratedExtension<ContainingType, Type>(
-        new CachedDescriptorRetriever() {
-          @Override
-          protected FieldDescriptor loadDescriptor() {
-            try {
-              Class clazz = singularType.getClassLoader().loadClass(descriptorOuterClass);
-              FileDescriptor file = (FileDescriptor) clazz.getField("descriptor").get(null);
-              return file.findExtensionByName(extensionName);
-            } catch (Exception e) {
-              throw new RuntimeException(
-                  "Cannot load descriptors: "
-                      + descriptorOuterClass
-                      + " is not a valid descriptor class name",
-                  e);
-            }
-          }
-        },
-        singularType,
-        defaultInstance,
-        Extension.ExtensionType.MUTABLE);
-  }
-
-  /**
-   * Type used to represent generated extensions.  The protocol compiler
-   * generates a static singleton instance of this class for each extension.
-   *
-   * <p>For example, imagine you have the {@code .proto} file:
-   *
-   * <pre>
-   * option java_class = "MyProto";
-   *
-   * message Foo {
-   *   extensions 1000 to max;
-   * }
-   *
-   * extend Foo {
-   *   optional int32 bar;
-   * }
-   * </pre>
-   *
-   * <p>Then, {@code MyProto.Foo.bar} has type
-   * {@code GeneratedExtension<MyProto.Foo, Integer>}.
-   *
-   * <p>In general, users should ignore the details of this type, and simply use
-   * these static singletons as parameters to the extension accessors defined
-   * in {@link ExtendableMessage} and {@link ExtendableBuilder}.
-   */
-  public static class GeneratedExtension<
-      ContainingType extends Message, Type> extends
-      Extension<ContainingType, Type> {
-    // TODO(kenton):  Find ways to avoid using Java reflection within this
-    //   class.  Also try to avoid suppressing unchecked warnings.
-
-    // We can't always initialize the descriptor of a GeneratedExtension when
-    // we first construct it due to initialization order difficulties (namely,
-    // the descriptor may not have been constructed yet, since it is often
-    // constructed by the initializer of a separate module).
-    //
-    // In the case of nested extensions, we initialize the
-    // ExtensionDescriptorRetriever with an instance that uses the scoping
-    // Message's default instance to retrieve the extension's descriptor.
-    //
-    // In the case of non-nested extensions, we initialize the
-    // ExtensionDescriptorRetriever to null and rely on the outer class's static
-    // initializer to call internalInit() after the descriptor has been parsed.
-    GeneratedExtension(ExtensionDescriptorRetriever descriptorRetriever,
-        Class singularType,
-        Message messageDefaultInstance,
-        ExtensionType extensionType) {
-      if (Message.class.isAssignableFrom(singularType) &&
-          !singularType.isInstance(messageDefaultInstance)) {
-        throw new IllegalArgumentException(
-            "Bad messageDefaultInstance for " + singularType.getName());
-      }
-      this.descriptorRetriever = descriptorRetriever;
-      this.singularType = singularType;
-      this.messageDefaultInstance = messageDefaultInstance;
-
-      if (ProtocolMessageEnum.class.isAssignableFrom(singularType)) {
-        this.enumValueOf = getMethodOrDie(singularType, "valueOf",
-                                          EnumValueDescriptor.class);
-        this.enumGetValueDescriptor =
-            getMethodOrDie(singularType, "getValueDescriptor");
-      } else {
-        this.enumValueOf = null;
-        this.enumGetValueDescriptor = null;
-      }
-      this.extensionType = extensionType;
-    }
-
-    /** For use by generated code only. */
-    public void internalInit(final FieldDescriptor descriptor) {
-      if (descriptorRetriever != null) {
-        throw new IllegalStateException("Already initialized.");
-      }
-      descriptorRetriever =
-          new ExtensionDescriptorRetriever() {
-            @Override
-            public FieldDescriptor getDescriptor() {
-              return descriptor;
-            }
-          };
-    }
-
-    private ExtensionDescriptorRetriever descriptorRetriever;
-    private final Class singularType;
-    private final Message messageDefaultInstance;
-    private final Method enumValueOf;
-    private final Method enumGetValueDescriptor;
-    private final ExtensionType extensionType;
-
-    @Override
-    public FieldDescriptor getDescriptor() {
-      if (descriptorRetriever == null) {
-        throw new IllegalStateException(
-            "getDescriptor() called before internalInit()");
-      }
-      return descriptorRetriever.getDescriptor();
-    }
-
-    /**
-     * If the extension is an embedded message or group, returns the default
-     * instance of the message.
-     */
-    @Override
-    public Message getMessageDefaultInstance() {
-      return messageDefaultInstance;
-    }
-
-    @Override
-    protected ExtensionType getExtensionType() {
-      return extensionType;
-    }
-
-    /**
-     * Convert from the type used by the reflection accessors to the type used
-     * by native accessors.  E.g., for enums, the reflection accessors use
-     * EnumValueDescriptors but the native accessors use the generated enum
-     * type.
-     */
-    @Override
-    @SuppressWarnings("unchecked")
-    protected Object fromReflectionType(final Object value) {
-      FieldDescriptor descriptor = getDescriptor();
-      if (descriptor.isRepeated()) {
-        if (descriptor.getJavaType() == FieldDescriptor.JavaType.MESSAGE ||
-            descriptor.getJavaType() == FieldDescriptor.JavaType.ENUM) {
-          // Must convert the whole list.
-          final List result = new ArrayList();
-          for (final Object element : (List) value) {
-            result.add(singularFromReflectionType(element));
-          }
-          return result;
-        } else {
-          return value;
-        }
-      } else {
-        return singularFromReflectionType(value);
-      }
-    }
-
-    /**
-     * Like {@link #fromReflectionType(Object)}, but if the type is a repeated
-     * type, this converts a single element.
-     */
-    @Override
-    protected Object singularFromReflectionType(final Object value) {
-      FieldDescriptor descriptor = getDescriptor();
-      switch (descriptor.getJavaType()) {
-        case MESSAGE:
-          if (singularType.isInstance(value)) {
-            return value;
-          } else {
-            return messageDefaultInstance.newBuilderForType()
-                .mergeFrom((Message) value).build();
-          }
-        case ENUM:
-          return invokeOrDie(enumValueOf, null, (EnumValueDescriptor) value);
-        default:
-          return value;
-      }
-    }
-
-    /**
-     * Convert from the type used by the native accessors to the type used
-     * by reflection accessors.  E.g., for enums, the reflection accessors use
-     * EnumValueDescriptors but the native accessors use the generated enum
-     * type.
-     */
-    @Override
-    @SuppressWarnings("unchecked")
-    protected Object toReflectionType(final Object value) {
-      FieldDescriptor descriptor = getDescriptor();
-      if (descriptor.isRepeated()) {
-        if (descriptor.getJavaType() == FieldDescriptor.JavaType.ENUM) {
-          // Must convert the whole list.
-          final List result = new ArrayList();
-          for (final Object element : (List) value) {
-            result.add(singularToReflectionType(element));
-          }
-          return result;
-        } else {
-          return value;
-        }
-      } else {
-        return singularToReflectionType(value);
-      }
-    }
-
-    /**
-     * Like {@link #toReflectionType(Object)}, but if the type is a repeated
-     * type, this converts a single element.
-     */
-    @Override
-    protected Object singularToReflectionType(final Object value) {
-      FieldDescriptor descriptor = getDescriptor();
-      switch (descriptor.getJavaType()) {
-        case ENUM:
-          return invokeOrDie(enumGetValueDescriptor, value);
-        default:
-          return value;
-      }
-    }
-
-    @Override
-    public int getNumber() {
-      return getDescriptor().getNumber();
-    }
-
-    @Override
-    public WireFormat.FieldType getLiteType() {
-      return getDescriptor().getLiteType();
-    }
-
-    @Override
-    public boolean isRepeated() {
-      return getDescriptor().isRepeated();
-    }
-
-    @Override
-    @SuppressWarnings("unchecked")
-    public Type getDefaultValue() {
-      if (isRepeated()) {
-        return (Type) Collections.emptyList();
-      }
-      if (getDescriptor().getJavaType() == FieldDescriptor.JavaType.MESSAGE) {
-        return (Type) messageDefaultInstance;
-      }
-      return (Type) singularFromReflectionType(
-          getDescriptor().getDefaultValue());
-    }
-  }
-
   // =================================================================
 
   /** Calls Class.getMethod and throws a RuntimeException if it fails. */
diff --git a/java/lite/pom.xml b/java/lite/pom.xml
index d6490247..9862cd94 100644
--- a/java/lite/pom.xml
+++ b/java/lite/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>com.google.protobuf</groupId>
     <artifactId>protobuf-parent</artifactId>
-    <version>3.1.0-alpha-1</version>
+    <version>3.0.0</version>
   </parent>
 
   <artifactId>protobuf-lite</artifactId>
diff --git a/java/pom.xml b/java/pom.xml
index 3fa0a85b..881473f3 100644
--- a/java/pom.xml
+++ b/java/pom.xml
@@ -11,7 +11,7 @@
 
   <groupId>com.google.protobuf</groupId>
   <artifactId>protobuf-parent</artifactId>
-  <version>3.1.0-alpha-1</version>
+  <version>3.1.0</version>
   <packaging>pom</packaging>
 
   <name>Protocol Buffers [Parent]</name>
diff --git a/java/util/pom.xml b/java/util/pom.xml
index 56a4e528..6b07bcdf 100644
--- a/java/util/pom.xml
+++ b/java/util/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>com.google.protobuf</groupId>
     <artifactId>protobuf-parent</artifactId>
-    <version>3.1.0-alpha-1</version>
+    <version>3.1.0</version>
   </parent>
 
   <artifactId>protobuf-java-util</artifactId>
diff --git a/javanano/pom.xml b/javanano/pom.xml
index 291ed27a..6bac76c9 100644
--- a/javanano/pom.xml
+++ b/javanano/pom.xml
@@ -10,7 +10,7 @@
   </parent>
   <groupId>com.google.protobuf.nano</groupId>
   <artifactId>protobuf-javanano</artifactId>
-  <version>3.1.0-alpha-1</version>
+  <version>3.1.0</version>
   <packaging>bundle</packaging>
   <name>Protocol Buffer JavaNano API</name>
   <description>
diff --git a/js/package.json b/js/package.json
index cc0db47b..ee4181ff 100644
--- a/js/package.json
+++ b/js/package.json
@@ -1,6 +1,6 @@
 {
   "name": "google-protobuf",
-  "version": "3.1.0-alpha.1",
+  "version": "3.1.0",
   "description": "Protocol Buffers for JavaScript",
   "main": "google-protobuf.js",
   "files": [
diff --git a/php/ext/google/protobuf/package.xml b/php/ext/google/protobuf/package.xml
index b4661832..14d46c43 100644
--- a/php/ext/google/protobuf/package.xml
+++ b/php/ext/google/protobuf/package.xml
@@ -10,11 +10,11 @@
   <email>protobuf-opensource@google.com</email>
   <active>yes</active>
  </lead>
- <date>2016-09-02</date>
+ <date>2016-09-23</date>
  <time>16:06:07</time>
  <version>
   <release>3.1.0a1</release>
-  <api>3.1.0</api>
+  <api>3.1.0a1</api>
  </version>
  <stability>
   <release>alpha</release>
@@ -57,14 +57,15 @@ First alpha release.
  <changelog>
   <release>
    <version>
-    <release>3.1.0</release>
-    <api>3.1.0</api>
+    <release>3.1.0a1</release>
+    <api>3.1.0a1</api>
    </version>
    <stability>
     <release>alpha</release>
     <api>alpha</api>
    </stability>
-   <date>2016-09-02</date>
+   <date>2016-09-23</date>
+   <time>16:06:07</time>
    <license uri="http://www.opensource.org/licenses/bsd-license.php">New BSD License</license>
    <notes>
 First alpha release
diff --git a/php/src/Google/Protobuf/Internal/Message.php b/php/src/Google/Protobuf/Internal/Message.php
index a8de6a11..7bdc6a8c 100644
--- a/php/src/Google/Protobuf/Internal/Message.php
+++ b/php/src/Google/Protobuf/Internal/Message.php
@@ -81,41 +81,44 @@ class Message
                 switch ($value_field->getType()) {
                     case GPBType::MESSAGE:
                     case GPBType::GROUP:
-                        $this->$setter(
-                            new MapField(
-                                $key_field->getType(),
-                                $value_field->getType(),
-                                $value_field->getMessageType()->getClass()));
+                        $map_field = new MapField(
+                            $key_field->getType(),
+                            $value_field->getType(),
+                            $value_field->getMessageType()->getClass());
+                        $this->$setter($map_field);
                         break;
                     case GPBType::ENUM:
-                        $this->$setter(
-                            new MapField(
-                                $key_field->getType(),
-                                $value_field->getType(),
-                                $value_field->getEnumType()->getClass()));
+                        $map_field = new MapField(
+                            $key_field->getType(),
+                            $value_field->getType(),
+                            $value_field->getEnumType()->getClass());
+                        $this->$setter($map_field);
                         break;
                     default:
-                        $this->$setter(new MapField($key_field->getType(),
-                                                    $value_field->getType()));
+                        $map_field = new MapField(
+                            $key_field->getType(),
+                            $value_field->getType());
+                        $this->$setter($map_field);
                         break;
                 }
             } else if ($field->getLabel() === GPBLabel::REPEATED) {
                 switch ($field->getType()) {
                     case GPBType::MESSAGE:
                     case GPBType::GROUP:
-                        $this->$setter(
-                            new RepeatedField(
-                                $field->getType(),
-                                $field->getMessageType()->getClass()));
+                        $repeated_field = new RepeatedField(
+                            $field->getType(),
+                            $field->getMessageType()->getClass());
+                        $this->$setter($repeated_field);
                         break;
                     case GPBType::ENUM:
-                        $this->$setter(
-                            new RepeatedField(
-                                $field->getType(),
-                                $field->getEnumType()->getClass()));
+                        $repeated_field = new RepeatedField(
+                            $field->getType(),
+                            $field->getEnumType()->getClass());
+                        $this->$setter($repeated_field);
                         break;
                     default:
-                        $this->$setter(new RepeatedField($field->getType()));
+                        $repeated_field = new RepeatedField($field->getType());
+                        $this->$setter($repeated_field);
                         break;
                 }
             } else if ($field->getOneofIndex() !== -1) {
diff --git a/php/tests/test_util.php b/php/tests/test_util.php
index decd1a78..2f6e4dd8 100644
--- a/php/tests/test_util.php
+++ b/php/tests/test_util.php
@@ -50,6 +50,8 @@ class TestUtil
 
     public static function setTestMessage(TestMessage $m)
     {
+        $sub = new TestMessage_Sub();
+
         $m->setOptionalInt32(-42);
         $m->setOptionalInt64(-43);
         $m->setOptionalUint32(42);
@@ -66,7 +68,7 @@ class TestUtil
         $m->setOptionalString('a');
         $m->setOptionalBytes('b');
         $m->setOptionalEnum(TestEnum::ONE);
-        $m->setOptionalMessage(new TestMessage_Sub());
+        $m->setOptionalMessage($sub);
         $m->getOptionalMessage()->SetA(33);
 
         $m->getRepeatedInt32()    []= -42;
diff --git a/protoc-artifacts/pom.xml b/protoc-artifacts/pom.xml
index b8581da1..680154b1 100644
--- a/protoc-artifacts/pom.xml
+++ b/protoc-artifacts/pom.xml
@@ -10,7 +10,7 @@
   </parent>
   <groupId>com.google.protobuf</groupId>
   <artifactId>protoc</artifactId>
-  <version>3.1.0-alpha-1</version>
+  <version>3.1.0</version>
   <packaging>pom</packaging>
   <name>Protobuf Compiler</name>
   <description>
diff --git a/python/google/protobuf/__init__.py b/python/google/protobuf/__init__.py
index f52137c4..0e2a89ff 100755
--- a/python/google/protobuf/__init__.py
+++ b/python/google/protobuf/__init__.py
@@ -30,7 +30,7 @@
 
 # Copyright 2007 Google Inc. All Rights Reserved.
 
-__version__ = '3.1.0a1'
+__version__ = '3.1.0'
 
 if __name__ != '__main__':
   try:
diff --git a/ruby/Gemfile.lock b/ruby/Gemfile.lock
index 7a89c866..46244fdf 100644
--- a/ruby/Gemfile.lock
+++ b/ruby/Gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    google-protobuf (3.1.0.alpha.1.0)
+    google-protobuf (3.1.0)
 
 GEM
   remote: https://rubygems.org/
diff --git a/ruby/google-protobuf.gemspec b/ruby/google-protobuf.gemspec
index 26d9b20d..c7357f78 100644
--- a/ruby/google-protobuf.gemspec
+++ b/ruby/google-protobuf.gemspec
@@ -1,6 +1,6 @@
 Gem::Specification.new do |s|
   s.name        = "google-protobuf"
-  s.version     = "3.1.0.alpha.1.0"
+  s.version     = "3.1.0"
   s.licenses    = ["BSD"]
   s.summary     = "Protocol Buffers"
   s.description = "Protocol Buffers are Google's data interchange format."
diff --git a/src/Makefile.am b/src/Makefile.am
index a608ec44..faee6d96 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -218,7 +218,7 @@ libprotobuf_lite_la_SOURCES =                                  \
   google/protobuf/io/zero_copy_stream_impl_lite.cc
 
 libprotobuf_la_LIBADD = $(PTHREAD_LIBS)
-libprotobuf_la_LDFLAGS = -version-info 10:0:0 -export-dynamic -no-undefined
+libprotobuf_la_LDFLAGS = -version-info 11:0:0 -export-dynamic -no-undefined
 libprotobuf_la_SOURCES =                                       \
   $(libprotobuf_lite_la_SOURCES)                               \
   google/protobuf/any.pb.cc                                    \
@@ -302,7 +302,7 @@ libprotobuf_la_SOURCES =                                       \
 nodist_libprotobuf_la_SOURCES = $(nodist_libprotobuf_lite_la_SOURCES)
 
 libprotoc_la_LIBADD = $(PTHREAD_LIBS) libprotobuf.la
-libprotoc_la_LDFLAGS = -version-info 10:0:0 -export-dynamic -no-undefined
+libprotoc_la_LDFLAGS = -version-info 11:0:0 -export-dynamic -no-undefined
 libprotoc_la_SOURCES =                                         \
   google/protobuf/compiler/code_generator.cc                   \
   google/protobuf/compiler/command_line_interface.cc           \
diff --git a/src/google/protobuf/descriptor.pb.cc b/src/google/protobuf/descriptor.pb.cc
index 3f310801..43556237 100644
--- a/src/google/protobuf/descriptor.pb.cc
+++ b/src/google/protobuf/descriptor.pb.cc
@@ -313,10 +313,11 @@ void protobuf_AssignDesc_google_2fprotobuf_2fdescriptor_2eproto() {
       sizeof(MethodDescriptorProto),
       GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(MethodDescriptorProto, _internal_metadata_));
   FileOptions_descriptor_ = file->message_type(9);
-  static const int FileOptions_offsets_[14] = {
+  static const int FileOptions_offsets_[15] = {
     GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(FileOptions, java_package_),
     GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(FileOptions, java_outer_classname_),
     GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(FileOptions, java_multiple_files_),
+    GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(FileOptions, java_generate_equals_and_hash_),
     GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(FileOptions, java_string_check_utf8_),
     GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(FileOptions, optimize_for_),
     GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(FileOptions, go_package_),
@@ -791,73 +792,74 @@ void protobuf_AddDesc_google_2fprotobuf_2fdescriptor_2eproto_impl() {
     "\n\013output_type\030\003 \001(\t\022/\n\007options\030\004 \001(\0132\036.g"
     "oogle.protobuf.MethodOptions\022\037\n\020client_s"
     "treaming\030\005 \001(\010:\005false\022\037\n\020server_streamin"
-    "g\030\006 \001(\010:\005false\"\331\004\n\013FileOptions\022\024\n\014java_p"
+    "g\030\006 \001(\010:\005false\"\204\005\n\013FileOptions\022\024\n\014java_p"
     "ackage\030\001 \001(\t\022\034\n\024java_outer_classname\030\010 \001"
-    "(\t\022\"\n\023java_multiple_files\030\n \001(\010:\005false\022%"
-    "\n\026java_string_check_utf8\030\033 \001(\010:\005false\022F\n"
-    "\014optimize_for\030\t \001(\0162).google.protobuf.Fi"
-    "leOptions.OptimizeMode:\005SPEED\022\022\n\ngo_pack"
-    "age\030\013 \001(\t\022\"\n\023cc_generic_services\030\020 \001(\010:\005"
-    "false\022$\n\025java_generic_services\030\021 \001(\010:\005fa"
-    "lse\022\"\n\023py_generic_services\030\022 \001(\010:\005false\022"
-    "\031\n\ndeprecated\030\027 \001(\010:\005false\022\037\n\020cc_enable_"
-    "arenas\030\037 \001(\010:\005false\022\031\n\021objc_class_prefix"
-    "\030$ \001(\t\022\030\n\020csharp_namespace\030% \001(\t\022C\n\024unin"
-    "terpreted_option\030\347\007 \003(\0132$.google.protobu"
-    "f.UninterpretedOption\":\n\014OptimizeMode\022\t\n"
-    "\005SPEED\020\001\022\r\n\tCODE_SIZE\020\002\022\020\n\014LITE_RUNTIME\020"
-    "\003*\t\010\350\007\020\200\200\200\200\002J\004\010&\020\'\"\354\001\n\016MessageOptions\022&\n"
-    "\027message_set_wire_format\030\001 \001(\010:\005false\022.\n"
-    "\037no_standard_descriptor_accessor\030\002 \001(\010:\005"
-    "false\022\031\n\ndeprecated\030\003 \001(\010:\005false\022\021\n\tmap_"
-    "entry\030\007 \001(\010\022C\n\024uninterpreted_option\030\347\007 \003"
-    "(\0132$.google.protobuf.UninterpretedOption"
-    "*\t\010\350\007\020\200\200\200\200\002J\004\010\010\020\t\"\236\003\n\014FieldOptions\022:\n\005ct"
-    "ype\030\001 \001(\0162#.google.protobuf.FieldOptions"
-    ".CType:\006STRING\022\016\n\006packed\030\002 \001(\010\022\?\n\006jstype"
-    "\030\006 \001(\0162$.google.protobuf.FieldOptions.JS"
-    "Type:\tJS_NORMAL\022\023\n\004lazy\030\005 \001(\010:\005false\022\031\n\n"
-    "deprecated\030\003 \001(\010:\005false\022\023\n\004weak\030\n \001(\010:\005f"
+    "(\t\022\"\n\023java_multiple_files\030\n \001(\010:\005false\022)"
+    "\n\035java_generate_equals_and_hash\030\024 \001(\010B\002\030"
+    "\001\022%\n\026java_string_check_utf8\030\033 \001(\010:\005false"
+    "\022F\n\014optimize_for\030\t \001(\0162).google.protobuf"
+    ".FileOptions.OptimizeMode:\005SPEED\022\022\n\ngo_p"
+    "ackage\030\013 \001(\t\022\"\n\023cc_generic_services\030\020 \001("
+    "\010:\005false\022$\n\025java_generic_services\030\021 \001(\010:"
+    "\005false\022\"\n\023py_generic_services\030\022 \001(\010:\005fal"
+    "se\022\031\n\ndeprecated\030\027 \001(\010:\005false\022\037\n\020cc_enab"
+    "le_arenas\030\037 \001(\010:\005false\022\031\n\021objc_class_pre"
+    "fix\030$ \001(\t\022\030\n\020csharp_namespace\030% \001(\t\022C\n\024u"
+    "ninterpreted_option\030\347\007 \003(\0132$.google.prot"
+    "obuf.UninterpretedOption\":\n\014OptimizeMode"
+    "\022\t\n\005SPEED\020\001\022\r\n\tCODE_SIZE\020\002\022\020\n\014LITE_RUNTI"
+    "ME\020\003*\t\010\350\007\020\200\200\200\200\002J\004\010&\020\'\"\354\001\n\016MessageOptions"
+    "\022&\n\027message_set_wire_format\030\001 \001(\010:\005false"
+    "\022.\n\037no_standard_descriptor_accessor\030\002 \001("
+    "\010:\005false\022\031\n\ndeprecated\030\003 \001(\010:\005false\022\021\n\tm"
+    "ap_entry\030\007 \001(\010\022C\n\024uninterpreted_option\030\347"
+    "\007 \003(\0132$.google.protobuf.UninterpretedOpt"
+    "ion*\t\010\350\007\020\200\200\200\200\002J\004\010\010\020\t\"\236\003\n\014FieldOptions\022:\n"
+    "\005ctype\030\001 \001(\0162#.google.protobuf.FieldOpti"
+    "ons.CType:\006STRING\022\016\n\006packed\030\002 \001(\010\022\?\n\006jst"
+    "ype\030\006 \001(\0162$.google.protobuf.FieldOptions"
+    ".JSType:\tJS_NORMAL\022\023\n\004lazy\030\005 \001(\010:\005false\022"
+    "\031\n\ndeprecated\030\003 \001(\010:\005false\022\023\n\004weak\030\n \001(\010"
+    ":\005false\022C\n\024uninterpreted_option\030\347\007 \003(\0132$"
+    ".google.protobuf.UninterpretedOption\"/\n\005"
+    "CType\022\n\n\006STRING\020\000\022\010\n\004CORD\020\001\022\020\n\014STRING_PI"
+    "ECE\020\002\"5\n\006JSType\022\r\n\tJS_NORMAL\020\000\022\r\n\tJS_STR"
+    "ING\020\001\022\r\n\tJS_NUMBER\020\002*\t\010\350\007\020\200\200\200\200\002J\004\010\004\020\005\"^\n"
+    "\014OneofOptions\022C\n\024uninterpreted_option\030\347\007"
+    " \003(\0132$.google.protobuf.UninterpretedOpti"
+    "on*\t\010\350\007\020\200\200\200\200\002\"\215\001\n\013EnumOptions\022\023\n\013allow_a"
+    "lias\030\002 \001(\010\022\031\n\ndeprecated\030\003 \001(\010:\005false\022C\n"
+    "\024uninterpreted_option\030\347\007 \003(\0132$.google.pr"
+    "otobuf.UninterpretedOption*\t\010\350\007\020\200\200\200\200\002\"}\n"
+    "\020EnumValueOptions\022\031\n\ndeprecated\030\001 \001(\010:\005f"
     "alse\022C\n\024uninterpreted_option\030\347\007 \003(\0132$.go"
-    "ogle.protobuf.UninterpretedOption\"/\n\005CTy"
-    "pe\022\n\n\006STRING\020\000\022\010\n\004CORD\020\001\022\020\n\014STRING_PIECE"
-    "\020\002\"5\n\006JSType\022\r\n\tJS_NORMAL\020\000\022\r\n\tJS_STRING"
-    "\020\001\022\r\n\tJS_NUMBER\020\002*\t\010\350\007\020\200\200\200\200\002J\004\010\004\020\005\"^\n\014On"
-    "eofOptions\022C\n\024uninterpreted_option\030\347\007 \003("
-    "\0132$.google.protobuf.UninterpretedOption*"
-    "\t\010\350\007\020\200\200\200\200\002\"\215\001\n\013EnumOptions\022\023\n\013allow_alia"
-    "s\030\002 \001(\010\022\031\n\ndeprecated\030\003 \001(\010:\005false\022C\n\024un"
-    "interpreted_option\030\347\007 \003(\0132$.google.proto"
-    "buf.UninterpretedOption*\t\010\350\007\020\200\200\200\200\002\"}\n\020En"
-    "umValueOptions\022\031\n\ndeprecated\030\001 \001(\010:\005fals"
-    "e\022C\n\024uninterpreted_option\030\347\007 \003(\0132$.googl"
-    "e.protobuf.UninterpretedOption*\t\010\350\007\020\200\200\200\200"
-    "\002\"{\n\016ServiceOptions\022\031\n\ndeprecated\030! \001(\010:"
-    "\005false\022C\n\024uninterpreted_option\030\347\007 \003(\0132$."
-    "google.protobuf.UninterpretedOption*\t\010\350\007"
-    "\020\200\200\200\200\002\"z\n\rMethodOptions\022\031\n\ndeprecated\030! "
-    "\001(\010:\005false\022C\n\024uninterpreted_option\030\347\007 \003("
-    "\0132$.google.protobuf.UninterpretedOption*"
-    "\t\010\350\007\020\200\200\200\200\002\"\236\002\n\023UninterpretedOption\022;\n\004na"
-    "me\030\002 \003(\0132-.google.protobuf.Uninterpreted"
-    "Option.NamePart\022\030\n\020identifier_value\030\003 \001("
-    "\t\022\032\n\022positive_int_value\030\004 \001(\004\022\032\n\022negativ"
-    "e_int_value\030\005 \001(\003\022\024\n\014double_value\030\006 \001(\001\022"
-    "\024\n\014string_value\030\007 \001(\014\022\027\n\017aggregate_value"
-    "\030\010 \001(\t\0323\n\010NamePart\022\021\n\tname_part\030\001 \002(\t\022\024\n"
-    "\014is_extension\030\002 \002(\010\"\325\001\n\016SourceCodeInfo\022:"
-    "\n\010location\030\001 \003(\0132(.google.protobuf.Sourc"
-    "eCodeInfo.Location\032\206\001\n\010Location\022\020\n\004path\030"
-    "\001 \003(\005B\002\020\001\022\020\n\004span\030\002 \003(\005B\002\020\001\022\030\n\020leading_c"
-    "omments\030\003 \001(\t\022\031\n\021trailing_comments\030\004 \001(\t"
-    "\022!\n\031leading_detached_comments\030\006 \003(\t\"\247\001\n\021"
-    "GeneratedCodeInfo\022A\n\nannotation\030\001 \003(\0132-."
-    "google.protobuf.GeneratedCodeInfo.Annota"
-    "tion\032O\n\nAnnotation\022\020\n\004path\030\001 \003(\005B\002\020\001\022\023\n\013"
-    "source_file\030\002 \001(\t\022\r\n\005begin\030\003 \001(\005\022\013\n\003end\030"
-    "\004 \001(\005BX\n\023com.google.protobufB\020Descriptor"
-    "ProtosH\001Z\ndescriptor\242\002\003GPB\252\002\032Google.Prot"
-    "obuf.Reflection", 5255);
+    "ogle.protobuf.UninterpretedOption*\t\010\350\007\020\200"
+    "\200\200\200\002\"{\n\016ServiceOptions\022\031\n\ndeprecated\030! \001"
+    "(\010:\005false\022C\n\024uninterpreted_option\030\347\007 \003(\013"
+    "2$.google.protobuf.UninterpretedOption*\t"
+    "\010\350\007\020\200\200\200\200\002\"z\n\rMethodOptions\022\031\n\ndeprecated"
+    "\030! \001(\010:\005false\022C\n\024uninterpreted_option\030\347\007"
+    " \003(\0132$.google.protobuf.UninterpretedOpti"
+    "on*\t\010\350\007\020\200\200\200\200\002\"\236\002\n\023UninterpretedOption\022;\n"
+    "\004name\030\002 \003(\0132-.google.protobuf.Uninterpre"
+    "tedOption.NamePart\022\030\n\020identifier_value\030\003"
+    " \001(\t\022\032\n\022positive_int_value\030\004 \001(\004\022\032\n\022nega"
+    "tive_int_value\030\005 \001(\003\022\024\n\014double_value\030\006 \001"
+    "(\001\022\024\n\014string_value\030\007 \001(\014\022\027\n\017aggregate_va"
+    "lue\030\010 \001(\t\0323\n\010NamePart\022\021\n\tname_part\030\001 \002(\t"
+    "\022\024\n\014is_extension\030\002 \002(\010\"\325\001\n\016SourceCodeInf"
+    "o\022:\n\010location\030\001 \003(\0132(.google.protobuf.So"
+    "urceCodeInfo.Location\032\206\001\n\010Location\022\020\n\004pa"
+    "th\030\001 \003(\005B\002\020\001\022\020\n\004span\030\002 \003(\005B\002\020\001\022\030\n\020leadin"
+    "g_comments\030\003 \001(\t\022\031\n\021trailing_comments\030\004 "
+    "\001(\t\022!\n\031leading_detached_comments\030\006 \003(\t\"\247"
+    "\001\n\021GeneratedCodeInfo\022A\n\nannotation\030\001 \003(\013"
+    "2-.google.protobuf.GeneratedCodeInfo.Ann"
+    "otation\032O\n\nAnnotation\022\020\n\004path\030\001 \003(\005B\002\020\001\022"
+    "\023\n\013source_file\030\002 \001(\t\022\r\n\005begin\030\003 \001(\005\022\013\n\003e"
+    "nd\030\004 \001(\005BX\n\023com.google.protobufB\020Descrip"
+    "torProtosH\001Z\ndescriptor\242\002\003GPB\252\002\032Google.P"
+    "rotobuf.Reflection", 5298);
   ::google::protobuf::MessageFactory::InternalRegisterGeneratedFile(
     "google/protobuf/descriptor.proto", &protobuf_RegisterTypes);
   ::google::protobuf::internal::OnShutdown(&protobuf_ShutdownFile_google_2fprotobuf_2fdescriptor_2eproto);
@@ -8174,6 +8176,7 @@ const int FileOptions::OptimizeMode_ARRAYSIZE;
 const int FileOptions::kJavaPackageFieldNumber;
 const int FileOptions::kJavaOuterClassnameFieldNumber;
 const int FileOptions::kJavaMultipleFilesFieldNumber;
+const int FileOptions::kJavaGenerateEqualsAndHashFieldNumber;
 const int FileOptions::kJavaStringCheckUtf8FieldNumber;
 const int FileOptions::kOptimizeForFieldNumber;
 const int FileOptions::kGoPackageFieldNumber;
@@ -8275,7 +8278,7 @@ void FileOptions::Clear() {
 } while (0)
 
   if (_has_bits_[0 / 32] & 255u) {
-    ZR_(java_multiple_files_, java_generic_services_);
+    ZR_(java_multiple_files_, cc_generic_services_);
     if (has_java_package()) {
       java_package_.ClearToEmptyNoArena(&::google::protobuf::internal::GetEmptyStringAlreadyInited());
     }
@@ -8287,8 +8290,8 @@ void FileOptions::Clear() {
       go_package_.ClearToEmptyNoArena(&::google::protobuf::internal::GetEmptyStringAlreadyInited());
     }
   }
-  if (_has_bits_[8 / 32] & 7936u) {
-    ZR_(py_generic_services_, cc_enable_arenas_);
+  if (_has_bits_[8 / 32] & 16128u) {
+    ZR_(java_generic_services_, cc_enable_arenas_);
     if (has_objc_class_prefix()) {
       objc_class_prefix_.ClearToEmptyNoArena(&::google::protobuf::internal::GetEmptyStringAlreadyInited());
     }
@@ -8443,6 +8446,21 @@ bool FileOptions::MergePartialFromCodedStream(
         } else {
           goto handle_unusual;
         }
+        if (input->ExpectTag(160)) goto parse_java_generate_equals_and_hash;
+        break;
+      }
+
+      // optional bool java_generate_equals_and_hash = 20 [deprecated = true];
+      case 20: {
+        if (tag == 160) {
+         parse_java_generate_equals_and_hash:
+          set_has_java_generate_equals_and_hash();
+          DO_((::google::protobuf::internal::WireFormatLite::ReadPrimitive<
+                   bool, ::google::protobuf::internal::WireFormatLite::TYPE_BOOL>(
+                 input, &java_generate_equals_and_hash_)));
+        } else {
+          goto handle_unusual;
+        }
         if (input->ExpectTag(184)) goto parse_deprecated;
         break;
       }
@@ -8629,6 +8647,11 @@ void FileOptions::SerializeWithCachedSizes(
     ::google::protobuf::internal::WireFormatLite::WriteBool(18, this->py_generic_services(), output);
   }
 
+  // optional bool java_generate_equals_and_hash = 20 [deprecated = true];
+  if (has_java_generate_equals_and_hash()) {
+    ::google::protobuf::internal::WireFormatLite::WriteBool(20, this->java_generate_equals_and_hash(), output);
+  }
+
   // optional bool deprecated = 23 [default = false];
   if (has_deprecated()) {
     ::google::protobuf::internal::WireFormatLite::WriteBool(23, this->deprecated(), output);
@@ -8744,6 +8767,11 @@ void FileOptions::SerializeWithCachedSizes(
     target = ::google::protobuf::internal::WireFormatLite::WriteBoolToArray(18, this->py_generic_services(), target);
   }
 
+  // optional bool java_generate_equals_and_hash = 20 [deprecated = true];
+  if (has_java_generate_equals_and_hash()) {
+    target = ::google::protobuf::internal::WireFormatLite::WriteBoolToArray(20, this->java_generate_equals_and_hash(), target);
+  }
+
   // optional bool deprecated = 23 [default = false];
   if (has_deprecated()) {
     target = ::google::protobuf::internal::WireFormatLite::WriteBoolToArray(23, this->deprecated(), target);
@@ -8824,6 +8852,11 @@ size_t FileOptions::ByteSizeLong() const {
       total_size += 1 + 1;
     }
 
+    // optional bool java_generate_equals_and_hash = 20 [deprecated = true];
+    if (has_java_generate_equals_and_hash()) {
+      total_size += 2 + 1;
+    }
+
     // optional bool java_string_check_utf8 = 27 [default = false];
     if (has_java_string_check_utf8()) {
       total_size += 2 + 1;
@@ -8847,13 +8880,13 @@ size_t FileOptions::ByteSizeLong() const {
       total_size += 2 + 1;
     }
 
+  }
+  if (_has_bits_[8 / 32] & 16128u) {
     // optional bool java_generic_services = 17 [default = false];
     if (has_java_generic_services()) {
       total_size += 2 + 1;
     }
 
-  }
-  if (_has_bits_[8 / 32] & 7936u) {
     // optional bool py_generic_services = 18 [default = false];
     if (has_py_generic_services()) {
       total_size += 2 + 1;
@@ -8948,6 +8981,9 @@ void FileOptions::UnsafeMergeFrom(const FileOptions& from) {
     if (from.has_java_multiple_files()) {
       set_java_multiple_files(from.java_multiple_files());
     }
+    if (from.has_java_generate_equals_and_hash()) {
+      set_java_generate_equals_and_hash(from.java_generate_equals_and_hash());
+    }
     if (from.has_java_string_check_utf8()) {
       set_java_string_check_utf8(from.java_string_check_utf8());
     }
@@ -8961,11 +8997,11 @@ void FileOptions::UnsafeMergeFrom(const FileOptions& from) {
     if (from.has_cc_generic_services()) {
       set_cc_generic_services(from.cc_generic_services());
     }
+  }
+  if (from._has_bits_[8 / 32] & (0xffu << (8 % 32))) {
     if (from.has_java_generic_services()) {
       set_java_generic_services(from.java_generic_services());
     }
-  }
-  if (from._has_bits_[8 / 32] & (0xffu << (8 % 32))) {
     if (from.has_py_generic_services()) {
       set_py_generic_services(from.py_generic_services());
     }
@@ -9023,6 +9059,7 @@ void FileOptions::InternalSwap(FileOptions* other) {
   java_package_.Swap(&other->java_package_);
   java_outer_classname_.Swap(&other->java_outer_classname_);
   std::swap(java_multiple_files_, other->java_multiple_files_);
+  std::swap(java_generate_equals_and_hash_, other->java_generate_equals_and_hash_);
   std::swap(java_string_check_utf8_, other->java_string_check_utf8_);
   std::swap(optimize_for_, other->optimize_for_);
   go_package_.Swap(&other->go_package_);
@@ -9183,15 +9220,39 @@ void FileOptions::set_java_multiple_files(bool value) {
   // @@protoc_insertion_point(field_set:google.protobuf.FileOptions.java_multiple_files)
 }
 
+// optional bool java_generate_equals_and_hash = 20 [deprecated = true];
+bool FileOptions::has_java_generate_equals_and_hash() const {
+  return (_has_bits_[0] & 0x00000008u) != 0;
+}
+void FileOptions::set_has_java_generate_equals_and_hash() {
+  _has_bits_[0] |= 0x00000008u;
+}
+void FileOptions::clear_has_java_generate_equals_and_hash() {
+  _has_bits_[0] &= ~0x00000008u;
+}
+void FileOptions::clear_java_generate_equals_and_hash() {
+  java_generate_equals_and_hash_ = false;
+  clear_has_java_generate_equals_and_hash();
+}
+bool FileOptions::java_generate_equals_and_hash() const {
+  // @@protoc_insertion_point(field_get:google.protobuf.FileOptions.java_generate_equals_and_hash)
+  return java_generate_equals_and_hash_;
+}
+void FileOptions::set_java_generate_equals_and_hash(bool value) {
+  set_has_java_generate_equals_and_hash();
+  java_generate_equals_and_hash_ = value;
+  // @@protoc_insertion_point(field_set:google.protobuf.FileOptions.java_generate_equals_and_hash)
+}
+
 // optional bool java_string_check_utf8 = 27 [default = false];
 bool FileOptions::has_java_string_check_utf8() const {
-  return (_has_bits_[0] & 0x00000008u) != 0;
+  return (_has_bits_[0] & 0x00000010u) != 0;
 }
 void FileOptions::set_has_java_string_check_utf8() {
-  _has_bits_[0] |= 0x00000008u;
+  _has_bits_[0] |= 0x00000010u;
 }
 void FileOptions::clear_has_java_string_check_utf8() {
-  _has_bits_[0] &= ~0x00000008u;
+  _has_bits_[0] &= ~0x00000010u;
 }
 void FileOptions::clear_java_string_check_utf8() {
   java_string_check_utf8_ = false;
@@ -9209,13 +9270,13 @@ void FileOptions::set_java_string_check_utf8(bool value) {
 
 // optional .google.protobuf.FileOptions.OptimizeMode optimize_for = 9 [default = SPEED];
 bool FileOptions::has_optimize_for() const {
-  return (_has_bits_[0] & 0x00000010u) != 0;
+  return (_has_bits_[0] & 0x00000020u) != 0;
 }
 void FileOptions::set_has_optimize_for() {
-  _has_bits_[0] |= 0x00000010u;
+  _has_bits_[0] |= 0x00000020u;
 }
 void FileOptions::clear_has_optimize_for() {
-  _has_bits_[0] &= ~0x00000010u;
+  _has_bits_[0] &= ~0x00000020u;
 }
 void FileOptions::clear_optimize_for() {
   optimize_for_ = 1;
@@ -9234,13 +9295,13 @@ void FileOptions::set_optimize_for(::google::protobuf::FileOptions_OptimizeMode
 
 // optional string go_package = 11;
 bool FileOptions::has_go_package() const {
-  return (_has_bits_[0] & 0x00000020u) != 0;
+  return (_has_bits_[0] & 0x00000040u) != 0;
 }
 void FileOptions::set_has_go_package() {
-  _has_bits_[0] |= 0x00000020u;
+  _has_bits_[0] |= 0x00000040u;
 }
 void FileOptions::clear_has_go_package() {
-  _has_bits_[0] &= ~0x00000020u;
+  _has_bits_[0] &= ~0x00000040u;
 }
 void FileOptions::clear_go_package() {
   go_package_.ClearToEmptyNoArena(&::google::protobuf::internal::GetEmptyStringAlreadyInited());
@@ -9288,13 +9349,13 @@ void FileOptions::set_allocated_go_package(::std::string* go_package) {
 
 // optional bool cc_generic_services = 16 [default = false];
 bool FileOptions::has_cc_generic_services() const {
-  return (_has_bits_[0] & 0x00000040u) != 0;
+  return (_has_bits_[0] & 0x00000080u) != 0;
 }
 void FileOptions::set_has_cc_generic_services() {
-  _has_bits_[0] |= 0x00000040u;
+  _has_bits_[0] |= 0x00000080u;
 }
 void FileOptions::clear_has_cc_generic_services() {
-  _has_bits_[0] &= ~0x00000040u;
+  _has_bits_[0] &= ~0x00000080u;
 }
 void FileOptions::clear_cc_generic_services() {
   cc_generic_services_ = false;
@@ -9312,13 +9373,13 @@ void FileOptions::set_cc_generic_services(bool value) {
 
 // optional bool java_generic_services = 17 [default = false];
 bool FileOptions::has_java_generic_services() const {
-  return (_has_bits_[0] & 0x00000080u) != 0;
+  return (_has_bits_[0] & 0x00000100u) != 0;
 }
 void FileOptions::set_has_java_generic_services() {
-  _has_bits_[0] |= 0x00000080u;
+  _has_bits_[0] |= 0x00000100u;
 }
 void FileOptions::clear_has_java_generic_services() {
-  _has_bits_[0] &= ~0x00000080u;
+  _has_bits_[0] &= ~0x00000100u;
 }
 void FileOptions::clear_java_generic_services() {
   java_generic_services_ = false;
@@ -9336,13 +9397,13 @@ void FileOptions::set_java_generic_services(bool value) {
 
 // optional bool py_generic_services = 18 [default = false];
 bool FileOptions::has_py_generic_services() const {
-  return (_has_bits_[0] & 0x00000100u) != 0;
+  return (_has_bits_[0] & 0x00000200u) != 0;
 }
 void FileOptions::set_has_py_generic_services() {
-  _has_bits_[0] |= 0x00000100u;
+  _has_bits_[0] |= 0x00000200u;
 }
 void FileOptions::clear_has_py_generic_services() {
-  _has_bits_[0] &= ~0x00000100u;
+  _has_bits_[0] &= ~0x00000200u;
 }
 void FileOptions::clear_py_generic_services() {
   py_generic_services_ = false;
@@ -9360,13 +9421,13 @@ void FileOptions::set_py_generic_services(bool value) {
 
 // optional bool deprecated = 23 [default = false];
 bool FileOptions::has_deprecated() const {
-  return (_has_bits_[0] & 0x00000200u) != 0;
+  return (_has_bits_[0] & 0x00000400u) != 0;
 }
 void FileOptions::set_has_deprecated() {
-  _has_bits_[0] |= 0x00000200u;
+  _has_bits_[0] |= 0x00000400u;
 }
 void FileOptions::clear_has_deprecated() {
-  _has_bits_[0] &= ~0x00000200u;
+  _has_bits_[0] &= ~0x00000400u;
 }
 void FileOptions::clear_deprecated() {
   deprecated_ = false;
@@ -9384,13 +9445,13 @@ void FileOptions::set_deprecated(bool value) {
 
 // optional bool cc_enable_arenas = 31 [default = false];
 bool FileOptions::has_cc_enable_arenas() const {
-  return (_has_bits_[0] & 0x00000400u) != 0;
+  return (_has_bits_[0] & 0x00000800u) != 0;
 }
 void FileOptions::set_has_cc_enable_arenas() {
-  _has_bits_[0] |= 0x00000400u;
+  _has_bits_[0] |= 0x00000800u;
 }
 void FileOptions::clear_has_cc_enable_arenas() {
-  _has_bits_[0] &= ~0x00000400u;
+  _has_bits_[0] &= ~0x00000800u;
 }
 void FileOptions::clear_cc_enable_arenas() {
   cc_enable_arenas_ = false;
@@ -9408,13 +9469,13 @@ void FileOptions::set_cc_enable_arenas(bool value) {
 
 // optional string objc_class_prefix = 36;
 bool FileOptions::has_objc_class_prefix() const {
-  return (_has_bits_[0] & 0x00000800u) != 0;
+  return (_has_bits_[0] & 0x00001000u) != 0;
 }
 void FileOptions::set_has_objc_class_prefix() {
-  _has_bits_[0] |= 0x00000800u;
+  _has_bits_[0] |= 0x00001000u;
 }
 void FileOptions::clear_has_objc_class_prefix() {
-  _has_bits_[0] &= ~0x00000800u;
+  _has_bits_[0] &= ~0x00001000u;
 }
 void FileOptions::clear_objc_class_prefix() {
   objc_class_prefix_.ClearToEmptyNoArena(&::google::protobuf::internal::GetEmptyStringAlreadyInited());
@@ -9462,13 +9523,13 @@ void FileOptions::set_allocated_objc_class_prefix(::std::string* objc_class_pref
 
 // optional string csharp_namespace = 37;
 bool FileOptions::has_csharp_namespace() const {
-  return (_has_bits_[0] & 0x00001000u) != 0;
+  return (_has_bits_[0] & 0x00002000u) != 0;
 }
 void FileOptions::set_has_csharp_namespace() {
-  _has_bits_[0] |= 0x00001000u;
+  _has_bits_[0] |= 0x00002000u;
 }
 void FileOptions::clear_has_csharp_namespace() {
-  _has_bits_[0] &= ~0x00001000u;
+  _has_bits_[0] &= ~0x00002000u;
 }
 void FileOptions::clear_csharp_namespace() {
   csharp_namespace_.ClearToEmptyNoArena(&::google::protobuf::internal::GetEmptyStringAlreadyInited());
diff --git a/src/google/protobuf/descriptor.pb.h b/src/google/protobuf/descriptor.pb.h
index 7546d7bd..75511d5a 100644
--- a/src/google/protobuf/descriptor.pb.h
+++ b/src/google/protobuf/descriptor.pb.h
@@ -2082,6 +2082,13 @@ class LIBPROTOBUF_EXPORT FileOptions : public ::google::protobuf::Message /* @@p
   bool java_multiple_files() const;
   void set_java_multiple_files(bool value);
 
+  // optional bool java_generate_equals_and_hash = 20 [deprecated = true];
+  GOOGLE_PROTOBUF_DEPRECATED_ATTR bool has_java_generate_equals_and_hash() const;
+  GOOGLE_PROTOBUF_DEPRECATED_ATTR void clear_java_generate_equals_and_hash();
+  GOOGLE_PROTOBUF_DEPRECATED_ATTR static const int kJavaGenerateEqualsAndHashFieldNumber = 20;
+  GOOGLE_PROTOBUF_DEPRECATED_ATTR bool java_generate_equals_and_hash() const;
+  GOOGLE_PROTOBUF_DEPRECATED_ATTR void set_java_generate_equals_and_hash(bool value);
+
   // optional bool java_string_check_utf8 = 27 [default = false];
   bool has_java_string_check_utf8() const;
   void clear_java_string_check_utf8();
@@ -2188,6 +2195,8 @@ class LIBPROTOBUF_EXPORT FileOptions : public ::google::protobuf::Message /* @@p
   inline void clear_has_java_outer_classname();
   inline void set_has_java_multiple_files();
   inline void clear_has_java_multiple_files();
+  inline void set_has_java_generate_equals_and_hash();
+  inline void clear_has_java_generate_equals_and_hash();
   inline void set_has_java_string_check_utf8();
   inline void clear_has_java_string_check_utf8();
   inline void set_has_optimize_for();
@@ -2221,6 +2230,7 @@ class LIBPROTOBUF_EXPORT FileOptions : public ::google::protobuf::Message /* @@p
   ::google::protobuf::internal::ArenaStringPtr objc_class_prefix_;
   ::google::protobuf::internal::ArenaStringPtr csharp_namespace_;
   bool java_multiple_files_;
+  bool java_generate_equals_and_hash_;
   bool java_string_check_utf8_;
   bool cc_generic_services_;
   bool java_generic_services_;
@@ -6292,15 +6302,39 @@ inline void FileOptions::set_java_multiple_files(bool value) {
   // @@protoc_insertion_point(field_set:google.protobuf.FileOptions.java_multiple_files)
 }
 
+// optional bool java_generate_equals_and_hash = 20 [deprecated = true];
+inline bool FileOptions::has_java_generate_equals_and_hash() const {
+  return (_has_bits_[0] & 0x00000008u) != 0;
+}
+inline void FileOptions::set_has_java_generate_equals_and_hash() {
+  _has_bits_[0] |= 0x00000008u;
+}
+inline void FileOptions::clear_has_java_generate_equals_and_hash() {
+  _has_bits_[0] &= ~0x00000008u;
+}
+inline void FileOptions::clear_java_generate_equals_and_hash() {
+  java_generate_equals_and_hash_ = false;
+  clear_has_java_generate_equals_and_hash();
+}
+inline bool FileOptions::java_generate_equals_and_hash() const {
+  // @@protoc_insertion_point(field_get:google.protobuf.FileOptions.java_generate_equals_and_hash)
+  return java_generate_equals_and_hash_;
+}
+inline void FileOptions::set_java_generate_equals_and_hash(bool value) {
+  set_has_java_generate_equals_and_hash();
+  java_generate_equals_and_hash_ = value;
+  // @@protoc_insertion_point(field_set:google.protobuf.FileOptions.java_generate_equals_and_hash)
+}
+
 // optional bool java_string_check_utf8 = 27 [default = false];
 inline bool FileOptions::has_java_string_check_utf8() const {
-  return (_has_bits_[0] & 0x00000008u) != 0;
+  return (_has_bits_[0] & 0x00000010u) != 0;
 }
 inline void FileOptions::set_has_java_string_check_utf8() {
-  _has_bits_[0] |= 0x00000008u;
+  _has_bits_[0] |= 0x00000010u;
 }
 inline void FileOptions::clear_has_java_string_check_utf8() {
-  _has_bits_[0] &= ~0x00000008u;
+  _has_bits_[0] &= ~0x00000010u;
 }
 inline void FileOptions::clear_java_string_check_utf8() {
   java_string_check_utf8_ = false;
@@ -6318,13 +6352,13 @@ inline void FileOptions::set_java_string_check_utf8(bool value) {
 
 // optional .google.protobuf.FileOptions.OptimizeMode optimize_for = 9 [default = SPEED];
 inline bool FileOptions::has_optimize_for() const {
-  return (_has_bits_[0] & 0x00000010u) != 0;
+  return (_has_bits_[0] & 0x00000020u) != 0;
 }
 inline void FileOptions::set_has_optimize_for() {
-  _has_bits_[0] |= 0x00000010u;
+  _has_bits_[0] |= 0x00000020u;
 }
 inline void FileOptions::clear_has_optimize_for() {
-  _has_bits_[0] &= ~0x00000010u;
+  _has_bits_[0] &= ~0x00000020u;
 }
 inline void FileOptions::clear_optimize_for() {
   optimize_for_ = 1;
@@ -6343,13 +6377,13 @@ inline void FileOptions::set_optimize_for(::google::protobuf::FileOptions_Optimi
 
 // optional string go_package = 11;
 inline bool FileOptions::has_go_package() const {
-  return (_has_bits_[0] & 0x00000020u) != 0;
+  return (_has_bits_[0] & 0x00000040u) != 0;
 }
 inline void FileOptions::set_has_go_package() {
-  _has_bits_[0] |= 0x00000020u;
+  _has_bits_[0] |= 0x00000040u;
 }
 inline void FileOptions::clear_has_go_package() {
-  _has_bits_[0] &= ~0x00000020u;
+  _has_bits_[0] &= ~0x00000040u;
 }
 inline void FileOptions::clear_go_package() {
   go_package_.ClearToEmptyNoArena(&::google::protobuf::internal::GetEmptyStringAlreadyInited());
@@ -6397,13 +6431,13 @@ inline void FileOptions::set_allocated_go_package(::std::string* go_package) {
 
 // optional bool cc_generic_services = 16 [default = false];
 inline bool FileOptions::has_cc_generic_services() const {
-  return (_has_bits_[0] & 0x00000040u) != 0;
+  return (_has_bits_[0] & 0x00000080u) != 0;
 }
 inline void FileOptions::set_has_cc_generic_services() {
-  _has_bits_[0] |= 0x00000040u;
+  _has_bits_[0] |= 0x00000080u;
 }
 inline void FileOptions::clear_has_cc_generic_services() {
-  _has_bits_[0] &= ~0x00000040u;
+  _has_bits_[0] &= ~0x00000080u;
 }
 inline void FileOptions::clear_cc_generic_services() {
   cc_generic_services_ = false;
@@ -6421,13 +6455,13 @@ inline void FileOptions::set_cc_generic_services(bool value) {
 
 // optional bool java_generic_services = 17 [default = false];
 inline bool FileOptions::has_java_generic_services() const {
-  return (_has_bits_[0] & 0x00000080u) != 0;
+  return (_has_bits_[0] & 0x00000100u) != 0;
 }
 inline void FileOptions::set_has_java_generic_services() {
-  _has_bits_[0] |= 0x00000080u;
+  _has_bits_[0] |= 0x00000100u;
 }
 inline void FileOptions::clear_has_java_generic_services() {
-  _has_bits_[0] &= ~0x00000080u;
+  _has_bits_[0] &= ~0x00000100u;
 }
 inline void FileOptions::clear_java_generic_services() {
   java_generic_services_ = false;
@@ -6445,13 +6479,13 @@ inline void FileOptions::set_java_generic_services(bool value) {
 
 // optional bool py_generic_services = 18 [default = false];
 inline bool FileOptions::has_py_generic_services() const {
-  return (_has_bits_[0] & 0x00000100u) != 0;
+  return (_has_bits_[0] & 0x00000200u) != 0;
 }
 inline void FileOptions::set_has_py_generic_services() {
-  _has_bits_[0] |= 0x00000100u;
+  _has_bits_[0] |= 0x00000200u;
 }
 inline void FileOptions::clear_has_py_generic_services() {
-  _has_bits_[0] &= ~0x00000100u;
+  _has_bits_[0] &= ~0x00000200u;
 }
 inline void FileOptions::clear_py_generic_services() {
   py_generic_services_ = false;
@@ -6469,13 +6503,13 @@ inline void FileOptions::set_py_generic_services(bool value) {
 
 // optional bool deprecated = 23 [default = false];
 inline bool FileOptions::has_deprecated() const {
-  return (_has_bits_[0] & 0x00000200u) != 0;
+  return (_has_bits_[0] & 0x00000400u) != 0;
 }
 inline void FileOptions::set_has_deprecated() {
-  _has_bits_[0] |= 0x00000200u;
+  _has_bits_[0] |= 0x00000400u;
 }
 inline void FileOptions::clear_has_deprecated() {
-  _has_bits_[0] &= ~0x00000200u;
+  _has_bits_[0] &= ~0x00000400u;
 }
 inline void FileOptions::clear_deprecated() {
   deprecated_ = false;
@@ -6493,13 +6527,13 @@ inline void FileOptions::set_deprecated(bool value) {
 
 // optional bool cc_enable_arenas = 31 [default = false];
 inline bool FileOptions::has_cc_enable_arenas() const {
-  return (_has_bits_[0] & 0x00000400u) != 0;
+  return (_has_bits_[0] & 0x00000800u) != 0;
 }
 inline void FileOptions::set_has_cc_enable_arenas() {
-  _has_bits_[0] |= 0x00000400u;
+  _has_bits_[0] |= 0x00000800u;
 }
 inline void FileOptions::clear_has_cc_enable_arenas() {
-  _has_bits_[0] &= ~0x00000400u;
+  _has_bits_[0] &= ~0x00000800u;
 }
 inline void FileOptions::clear_cc_enable_arenas() {
   cc_enable_arenas_ = false;
@@ -6517,13 +6551,13 @@ inline void FileOptions::set_cc_enable_arenas(bool value) {
 
 // optional string objc_class_prefix = 36;
 inline bool FileOptions::has_objc_class_prefix() const {
-  return (_has_bits_[0] & 0x00000800u) != 0;
+  return (_has_bits_[0] & 0x00001000u) != 0;
 }
 inline void FileOptions::set_has_objc_class_prefix() {
-  _has_bits_[0] |= 0x00000800u;
+  _has_bits_[0] |= 0x00001000u;
 }
 inline void FileOptions::clear_has_objc_class_prefix() {
-  _has_bits_[0] &= ~0x00000800u;
+  _has_bits_[0] &= ~0x00001000u;
 }
 inline void FileOptions::clear_objc_class_prefix() {
   objc_class_prefix_.ClearToEmptyNoArena(&::google::protobuf::internal::GetEmptyStringAlreadyInited());
@@ -6571,13 +6605,13 @@ inline void FileOptions::set_allocated_objc_class_prefix(::std::string* objc_cla
 
 // optional string csharp_namespace = 37;
 inline bool FileOptions::has_csharp_namespace() const {
-  return (_has_bits_[0] & 0x00001000u) != 0;
+  return (_has_bits_[0] & 0x00002000u) != 0;
 }
 inline void FileOptions::set_has_csharp_namespace() {
-  _has_bits_[0] |= 0x00001000u;
+  _has_bits_[0] |= 0x00002000u;
 }
 inline void FileOptions::clear_has_csharp_namespace() {
-  _has_bits_[0] &= ~0x00001000u;
+  _has_bits_[0] &= ~0x00002000u;
 }
 inline void FileOptions::clear_csharp_namespace() {
   csharp_namespace_.ClearToEmptyNoArena(&::google::protobuf::internal::GetEmptyStringAlreadyInited());
diff --git a/src/google/protobuf/descriptor.proto b/src/google/protobuf/descriptor.proto
index 23a9fe92..558ae23e 100644
--- a/src/google/protobuf/descriptor.proto
+++ b/src/google/protobuf/descriptor.proto
@@ -305,10 +305,8 @@ message FileOptions {
   // top-level extensions defined in the file.
   optional bool java_multiple_files = 10 [default=false];
 
-  // BEGIN PROTOBUF-OPENSOURCE
-  // // This option does nothing.
-  // optional bool java_generate_equals_and_hash = 20 [deprecated=true];
-  // END PROTOBUF-OPENSOURCE
+  // This option does nothing.
+  optional bool java_generate_equals_and_hash = 20 [deprecated=true];
 
   // If set true, then the Java2 code generator will generate code that
   // throws an exception whenever an attempt is made to assign a non-UTF-8