From 781eb2a6e61cbb10d0b396b872b4784a7304b1af Mon Sep 17 00:00:00 2001
From: Patrick Strawderman <pstrawderman@netflix.com>
Date: Thu, 14 May 2026 11:12:48 -0500
Subject: [PATCH] Short-circuit TypeToken#equals for same instance comparison

Avoid delegating to the runtime type's equals implementation in TypeToken#equals for
identical instances of TypeTokens.
---
 guava/src/com/google/common/reflect/TypeToken.java | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/guava/src/com/google/common/reflect/TypeToken.java b/guava/src/com/google/common/reflect/TypeToken.java
index e9f61b0c489e..589885b9ce28 100644
--- a/guava/src/com/google/common/reflect/TypeToken.java
+++ b/guava/src/com/google/common/reflect/TypeToken.java
@@ -836,6 +836,9 @@ public boolean apply(TypeToken<?> type) {
    */
   @Override
   public boolean equals(@Nullable Object o) {
+    if (o == this) {
+      return true;
+    }
     if (o instanceof TypeToken) {
       TypeToken<?> that = (TypeToken<?>) o;
       return runtimeType.equals(that.runtimeType);