2 files changed, 8 insertions, 2 deletions
diff --git a/source/blender/blenkernel/BKE_mesh.h b/source/blender/blenkernel/BKE_mesh.h
index 72a1303fc6b..26c48816b39 100644
--- a/source/blender/blenkernel/BKE_mesh.h
+++ b/source/blender/blenkernel/BKE_mesh.h
@@ -414,6 +414,9 @@ void BKE_mesh_assert_normals_dirty_or_calculated(const struct Mesh *mesh);
  * \note In order to clear the dirty flag, this function should be followed by a call to
  * #BKE_mesh_vertex_normals_clear_dirty. This is separate so that normals are still tagged dirty
  * while they are being assigned.
+ *
+ * \warning The memory returned by this function is not initialized if it was not previously
+ * allocated.
  */
 float (*BKE_mesh_vertex_normals_for_write(struct Mesh *mesh))[3];
 
@@ -424,6 +427,9 @@ float (*BKE_mesh_vertex_normals_for_write(struct Mesh *mesh))[3];
  * \note In order to clear the dirty flag, this function should be followed by a call to
  * #BKE_mesh_poly_normals_clear_dirty. This is separate so that normals are still tagged dirty
  * while they are being assigned.
+ *
+ * \warning The memory returned by this function is not initialized if it was not previously
+ * allocated.
  */
 float (*BKE_mesh_poly_normals_for_write(struct Mesh *mesh))[3];
 
diff --git a/source/blender/modifiers/intern/MOD_normal_edit.c b/source/blender/modifiers/intern/MOD_normal_edit.c
index 61099fedf46..642c0f0180f 100644
--- a/source/blender/modifiers/intern/MOD_normal_edit.c
+++ b/source/blender/modifiers/intern/MOD_normal_edit.c
@@ -551,8 +551,8 @@ static Mesh *normalEditModifier_do(NormalEditModifierData *enmd,
 
   CustomData *ldata = &result->ldata;
 
-  const float(*vert_normals)[3] = BKE_mesh_vertex_normals_ensure(mesh);
-  const float(*poly_normals)[3] = BKE_mesh_poly_normals_ensure(mesh);
+  const float(*vert_normals)[3] = BKE_mesh_vertex_normals_ensure(result);
+  const float(*poly_normals)[3] = BKE_mesh_poly_normals_ensure(result);
 
   clnors = CustomData_get_layer(ldata, CD_CUSTOMLOOPNORMAL);
   if (use_current_clnors) {