Internal changes

PiperOrigin-RevId: 531631350

src/google/protobuf/descriptor.cc

@@ -6183,9 +6183,12 @@ void DescriptorBuilder::BuildOneof(const OneofDescriptorProto& proto,
   result->fields_ = nullptr;
 
   // Copy options.
-  result->options_ =
+  {
-      AllocateOptions(proto, result, OneofDescriptorProto::kOptionsFieldNumber,
+    OneofOptions* options = AllocateOptions(
-                      "google.protobuf.OneofOptions", alloc);
+        proto, result, OneofDescriptorProto::kOptionsFieldNumber,
+        "google.protobuf.OneofOptions", alloc);
+    result->options_ = options;  // Set to default_instance later if necessary.
+  }
 
   AddSymbol(result->full_name(), parent, result->name(), proto, Symbol(result));
 }

src/google/protobuf/descriptor.h

@@ -1109,6 +1109,7 @@ class PROTOBUF_EXPORT OneofDescriptor : private internal::SymbolBase {
 
   const OneofOptions& options() const;
 
+
   // See Descriptor::CopyTo().
   void CopyTo(OneofDescriptorProto* proto) const;