skip updating tessface customdata layers when joining meshes & clear tessface data...

diff --git a/source/blender/editors/mesh/meshtools.c b/source/blender/editors/mesh/meshtools.c
index c2580b4..9feaafb 100644 (file)
--- a/source/blender/editors/mesh/meshtools.c
+++ b/source/blender/editors/mesh/meshtools.c
@@ -165,6 +165,9 @@ int join_mesh_exec(bContext *C, wmOperator *op)
                return OPERATOR_CANCELLED;
        }
 
+       /* remove tessface to ensure we don't old references to invalid faces */
+       BKE_mesh_tessface_clear(me);
+
        /* new material indices and material array */
        matar = MEM_callocN(sizeof(void *) * totmat, "join_mesh matar");
        if (totmat) matmap = MEM_callocN(sizeof(int) * totmat, "join_mesh matmap");
@@ -513,7 +516,8 @@ int join_mesh_exec(bContext *C, wmOperator *op)
        me->ldata = ldata;
        me->pdata = pdata;
 
-       mesh_update_customdata_pointers(me, TRUE); /* BMESH_TODO, check if this arg can be failse, non urgent - campbell */
+       /* tessface data removed above, no need to update */
+       mesh_update_customdata_pointers(me, FALSE);
        
        /* old material array */
        for (a = 1; a <= ob->totcol; a++) {