From 54ad194ced4ce4a817f718c12b419372f2b724d9 Mon Sep 17 00:00:00 2001
From: Protobuf Team Bot <protobuf-github-bot@google.com>
Date: Tue, 28 Apr 2026 06:43:37 -0700
Subject: [PATCH] Internal change

PiperOrigin-RevId: 906948464
---
 .../src/main/java/com/google/protobuf/CodedOutputStream.java  | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/java/core/src/main/java/com/google/protobuf/CodedOutputStream.java b/java/core/src/main/java/com/google/protobuf/CodedOutputStream.java
index 9dc755d371b6c..6a105e3e121fe 100644
--- a/java/core/src/main/java/com/google/protobuf/CodedOutputStream.java
+++ b/java/core/src/main/java/com/google/protobuf/CodedOutputStream.java
@@ -45,6 +45,8 @@ public abstract class CodedOutputStream extends ByteOutput {
   /** The buffer size used in {@link #newInstance(OutputStream)}. */
   public static final int DEFAULT_BUFFER_SIZE = 4096;
 
+  static volatile boolean defaultSerializationDeterministic = false;
+
   /**
    * Returns the buffer size to efficiently write dataLength bytes to this CodedOutputStream. Used
    * by AbstractMessageLite.
@@ -156,7 +158,7 @@ boolean isSerializationDeterministic() {
     return serializationDeterministic;
   }
 
-  private boolean serializationDeterministic;
+  private boolean serializationDeterministic = defaultSerializationDeterministic;
 
   /**
    * Create a new {@code CodedOutputStream} that writes to the given {@link ByteBuffer}.