From 138b06ca1188c9aaa734801cdda7f7a6cac54602 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?S=C3=A9bastien=20Loriot?= <sebastien.loriot@cgal.org>
Date: Mon, 3 Mar 2025 10:15:51 +0100
Subject: [PATCH 1/2] add missing include

---
 Algebraic_foundations/include/CGAL/number_utils.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Algebraic_foundations/include/CGAL/number_utils.h b/Algebraic_foundations/include/CGAL/number_utils.h
index c17823d72b9d..bfe2bc346411 100644
--- a/Algebraic_foundations/include/CGAL/number_utils.h
+++ b/Algebraic_foundations/include/CGAL/number_utils.h
@@ -21,6 +21,7 @@
 #include <CGAL/Algebraic_structure_traits.h>
 #include <CGAL/Real_embeddable_traits.h>
 #include <CGAL/Kernel/Same_uncertainty.h>
+#include <boost/mpl/if.hpp>
 
 namespace CGAL {
 CGAL_NTS_BEGIN_NAMESPACE

From 1b189f40fd1d36d5daf3b92ff7568c4cbfce7383 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?S=C3=A9bastien=20Loriot?= <sebastien.loriot@cgal.org>
Date: Mon, 3 Mar 2025 16:27:24 +0100
Subject: [PATCH 2/2] check should be on the dimension not the number of points

---
 Alpha_shapes_2/include/CGAL/Alpha_shape_2.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Alpha_shapes_2/include/CGAL/Alpha_shape_2.h b/Alpha_shapes_2/include/CGAL/Alpha_shape_2.h
index 3c4cb4b7d301..812f609d3aca 100644
--- a/Alpha_shapes_2/include/CGAL/Alpha_shape_2.h
+++ b/Alpha_shapes_2/include/CGAL/Alpha_shape_2.h
@@ -1442,7 +1442,7 @@ Alpha_shape_2<Dt,EACT>::find_alpha_solid() const
   // takes O(#alpha_shape) time
   Type_of_alpha alpha_solid = 0;
 
-  if (number_of_vertices()<3) return alpha_solid;
+  if (dimension()!=2) return alpha_solid;
 
   Finite_vertices_iterator vertex_it;
   // only finite vertices