commit 38b51d5b7ef1655add0dedf3efb8ae013dc80236
author Charles Schlosser <cs.schlosser@gmail.com> Tue Aug 26 20:04:17 2025 +0000
committer Rasmus Munk Larsen <rmlarsen@google.com> Tue Aug 26 20:04:17 2025 +0000
tree 6ce7a6794a859aa9a7aa3010416b96884b8137dc
parent d2a70fe4e2c0782f14767583c6f63b58c7a2fb4b

Mitigate setConstant regression with custom scalars

Eigen/src/Core/Fill.h

diff --git a/Eigen/src/Core/Fill.h b/Eigen/src/Core/Fill.h
index 9d4ecd4..f40d56d 100644
--- a/Eigen/src/Core/Fill.h
+++ b/Eigen/src/Core/Fill.h
@@ -78,8 +78,9 @@
 struct eigen_fill_impl<Xpr, /*use_fill*/ true> {
   using Scalar = typename Xpr::Scalar;
   static EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE void run(Xpr& dst, const Scalar& val) {
+    const Scalar val_copy = val;
     using std::fill_n;
-    fill_n(dst.data(), dst.size(), val);
+    fill_n(dst.data(), dst.size(), val_copy);
   }
   template <typename SrcXpr>
   static EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE void run(Xpr& dst, const SrcXpr& src) {