From eeb3d027c540d7d8fe2763fe725ce80fb5af4ff5 Mon Sep 17 00:00:00 2001
From: Chris Hennes <chennes@pioneerlibrarysystem.org>
Date: Mon, 21 Jul 2025 22:07:01 -0500
Subject: [PATCH] MeshPart: Fix multiplication result converted to larger type

---
 src/Mod/MeshPart/App/MeshFlattening.cpp      | 3 ++-
 src/Mod/MeshPart/App/MeshFlatteningNurbs.cpp | 2 +-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/Mod/MeshPart/App/MeshFlattening.cpp b/src/Mod/MeshPart/App/MeshFlattening.cpp
index f845b0a299..2834ad5df9 100644
--- a/src/Mod/MeshPart/App/MeshFlattening.cpp
+++ b/src/Mod/MeshPart/App/MeshFlattening.cpp
@@ -196,7 +196,8 @@ ColMat<double, 3> FaceUnwrapper::interpolateFlatFace(const TopoDS_Face& face)
     const TColStd_Array1OfReal& _vknots = _bspline->VKnotSequence();
 
     Eigen::VectorXd weights;
-    weights.resize(_bspline->NbUPoles() * _bspline->NbVPoles());
+    weights.resize(static_cast<Eigen::Index>(_bspline->NbUPoles())
+                   * static_cast<Eigen::Index>(_bspline->NbVPoles()));
     long i = 0;
     for (long u = 1; u <= _bspline->NbUPoles(); u++) {
         for (long v = 1; v <= _bspline->NbVPoles(); v++) {
diff --git a/src/Mod/MeshPart/App/MeshFlatteningNurbs.cpp b/src/Mod/MeshPart/App/MeshFlatteningNurbs.cpp
index 9af4f3e676..da252cb943 100644
--- a/src/Mod/MeshPart/App/MeshFlatteningNurbs.cpp
+++ b/src/Mod/MeshPart/App/MeshFlatteningNurbs.cpp
@@ -368,7 +368,7 @@ Eigen::Matrix<double, Eigen::Dynamic, 2> NurbsBase2D::getUVMesh(int num_u_points
     double v_min = this->v_knots(0);
     double v_max = this->v_knots(this->v_knots.size() - 1);
     Eigen::Matrix<double, Eigen::Dynamic, 2> uv_points;
-    uv_points.resize(num_u_points * num_v_points, 2);
+    uv_points.resize(static_cast<Eigen::Index>(num_u_points) * static_cast<Eigen::Index>(num_v_points), 2);
     int i = 0;
     for (int u = 0; u < num_u_points; u++)
     {