3 files changed, 15 insertions, 15 deletions
diff --git a/source/blender/io/stl/importer/stl_import.cc b/source/blender/io/stl/importer/stl_import.cc
index 097d14b038c..e5fde6658ab 100644
--- a/source/blender/io/stl/importer/stl_import.cc
+++ b/source/blender/io/stl/importer/stl_import.cc
@@ -99,11 +99,12 @@ void importer_main(Main *bmain,
     BKE_mesh_validate(mesh, verbose_validate, false);
   }
 
-  BKE_view_layer_base_deselect_all(view_layer);
+  BKE_view_layer_base_deselect_all(scene, view_layer);
   LayerCollection *lc = BKE_layer_collection_get_active(view_layer);
   Object *obj = BKE_object_add_only_object(bmain, OB_MESH, ob_name);
   BKE_mesh_assign_object(bmain, obj, mesh);
   BKE_collection_object_add(bmain, lc->collection, obj);
+  BKE_view_layer_synced_ensure(scene, view_layer);
   Base *base = BKE_view_layer_base_find(view_layer, obj);
   BKE_view_layer_base_select_and_set_active(view_layer, base);
 
diff --git a/source/blender/io/stl/importer/stl_import_ascii_reader.cc b/source/blender/io/stl/importer/stl_import_ascii_reader.cc
index 2edb3c6a114..6a976a2fd2c 100644
--- a/source/blender/io/stl/importer/stl_import_ascii_reader.cc
+++ b/source/blender/io/stl/importer/stl_import_ascii_reader.cc
@@ -97,7 +97,7 @@ class StringBuffer {
       start++;
     }
     fast_float::from_chars_result res = fast_float::from_chars(start, end, out);
-    if (res.ec == std::errc::invalid_argument || res.ec == std::errc::result_out_of_range) {
+    if (ELEM(res.ec, std::errc::invalid_argument, std::errc::result_out_of_range)) {
       out = 0.0f;
     }
     start = const_cast<char *>(res.ptr);
diff --git a/source/blender/io/stl/importer/stl_import_mesh.cc b/source/blender/io/stl/importer/stl_import_mesh.cc
index b9ed441f0d9..de993cd2f27 100644
--- a/source/blender/io/stl/importer/stl_import_mesh.cc
+++ b/source/blender/io/stl/importer/stl_import_mesh.cc
@@ -76,27 +76,26 @@ Mesh *STLMeshHelper::to_mesh(Main *bmain, char *mesh_name)
   id_us_min(&mesh->id);
 
   mesh->totvert = verts_.size();
-  mesh->mvert = static_cast<MVert *>(
-      CustomData_add_layer(&mesh->vdata, CD_MVERT, CD_CALLOC, nullptr, mesh->totvert));
+  CustomData_add_layer(&mesh->vdata, CD_MVERT, CD_SET_DEFAULT, nullptr, mesh->totvert);
+  MutableSpan<MVert> verts = mesh->verts_for_write();
   for (int i = 0; i < mesh->totvert; i++) {
-    copy_v3_v3(mesh->mvert[i].co, verts_[i]);
+    copy_v3_v3(verts[i].co, verts_[i]);
   }
 
   mesh->totpoly = tris_.size();
   mesh->totloop = tris_.size() * 3;
-  mesh->mpoly = static_cast<MPoly *>(
-      CustomData_add_layer(&mesh->pdata, CD_MPOLY, CD_CALLOC, nullptr, mesh->totpoly));
-  mesh->mloop = static_cast<MLoop *>(
-      CustomData_add_layer(&mesh->ldata, CD_MLOOP, CD_CALLOC, nullptr, mesh->totloop));
-
+  CustomData_add_layer(&mesh->pdata, CD_MPOLY, CD_SET_DEFAULT, nullptr, mesh->totpoly);
+  CustomData_add_layer(&mesh->ldata, CD_MLOOP, CD_SET_DEFAULT, nullptr, mesh->totloop);
+  MutableSpan<MPoly> polys = mesh->polys_for_write();
+  MutableSpan<MLoop> loops = mesh->loops_for_write();
   threading::parallel_for(tris_.index_range(), 2048, [&](IndexRange tris_range) {
     for (const int i : tris_range) {
-      mesh->mpoly[i].loopstart = 3 * i;
-      mesh->mpoly[i].totloop = 3;
+      polys[i].loopstart = 3 * i;
+      polys[i].totloop = 3;
 
-      mesh->mloop[3 * i].v = tris_[i].v1;
-      mesh->mloop[3 * i + 1].v = tris_[i].v2;
-      mesh->mloop[3 * i + 2].v = tris_[i].v3;
+      loops[3 * i].v = tris_[i].v1;
+      loops[3 * i + 1].v = tris_[i].v2;
+      loops[3 * i + 2].v = tris_[i].v3;
     }
   });