From 7aefb9f4d95e74c9d53fcdf62a3feb8af6145f96 Mon Sep 17 00:00:00 2001
From: Charles Schlosser <cs.schlosser@gmail.com>
Date: Sat, 12 Apr 2025 16:20:09 +0000
Subject: [PATCH] fix memset optimization for std::complex types

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

diff --git a/Eigen/src/Core/Fill.h b/Eigen/src/Core/Fill.h
index 3b0af91a7..9d4ecd445 100644
--- a/Eigen/src/Core/Fill.h
+++ b/Eigen/src/Core/Fill.h
@@ -92,7 +92,8 @@ struct eigen_fill_impl<Xpr, /*use_fill*/ true> {
 
 template <typename Xpr>
 struct eigen_memset_helper {
-  static constexpr bool value = std::is_trivial<typename Xpr::Scalar>::value && eigen_fill_helper<Xpr>::value;
+  static constexpr bool value =
+      std::is_trivially_copyable<typename Xpr::Scalar>::value && eigen_fill_helper<Xpr>::value;
 };
 
 template <typename Xpr>