From 14477c5d43ea0e68386da96ea57c787e78076b88 Mon Sep 17 00:00:00 2001
From: Sergiu Deitsch <sergiu.deitsch@gmail.com>
Date: Mon, 22 Sep 2025 18:59:10 +0200
Subject: [PATCH] Replace deprecated std::is_trivial by an internal definition

---
 Eigen/src/Core/util/Serializer.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Eigen/src/Core/util/Serializer.h b/Eigen/src/Core/util/Serializer.h
index 1e1282000..dc3bd1308 100644
--- a/Eigen/src/Core/util/Serializer.h
+++ b/Eigen/src/Core/util/Serializer.h
@@ -28,7 +28,8 @@ class Serializer;
 
 // Specialization for POD types.
 template <typename T>
-class Serializer<T, typename std::enable_if_t<std::is_trivial<T>::value && std::is_standard_layout<T>::value>> {
+class Serializer<T,
+                 typename std::enable_if_t<std::is_trivially_copyable<T>::value && std::is_standard_layout<T>::value>> {
  public:
   /**
    * Determines the required size of the serialization buffer for a value.