[Bf-blender-cvs] [25835ec] master: Fix possible use of invalid face index with wireframe tool

[Campbell Barton]

Commit: 25835ec977cbb255c01699ae3bd38f93668ff024
Author: Campbell Barton
Date:   Mon Mar 24 21:04:13 2014 +1100
https://developer.blender.org/rB25835ec977cbb255c01699ae3bd38f93668ff024

Fix possible use of invalid face index with wireframe tool

===================================================================

M	source/blender/bmesh/tools/bmesh_wireframe.c

===================================================================

diff --git a/source/blender/bmesh/tools/bmesh_wireframe.c b/source/blender/bmesh/tools/bmesh_wireframe.c
index db4601d..0cb3aa5 100644
--- a/source/blender/bmesh/tools/bmesh_wireframe.c
+++ b/source/blender/bmesh/tools/bmesh_wireframe.c
@@ -227,16 +227,18 @@ void BM_mesh_wireframe(
 		cd_edge_crease_offset = CustomData_get_offset(&bm->edata, CD_CREASE);
 	}
 
-	BM_mesh_elem_index_ensure(bm, BM_VERT);
-
 	BM_ITER_MESH_INDEX (v_src, &iter, bm, BM_VERTS_OF_MESH, i) {
-		BM_elem_flag_disable(v_src, BM_ELEM_TAG);
+		BM_elem_index_set(v_src, i); /* set_inline */
+
 		verts_src[i] = v_src;
+		BM_elem_flag_disable(v_src, BM_ELEM_TAG);
 	}
+	bm->elem_index_dirty &= ~BM_VERT;
 
 	/* setup tags, all faces and verts will be tagged which will be duplicated */
 
-	BM_ITER_MESH (f_src, &iter, bm, BM_FACES_OF_MESH) {
+	BM_ITER_MESH_INDEX (f_src, &iter, bm, BM_FACES_OF_MESH, i) {
+		BM_elem_index_set(f_src, i); /* set_inline */
 
 		if (use_tag) {
 			if (!BM_elem_flag_test(f_src, BM_ELEM_TAG)) {
@@ -256,6 +258,7 @@ void BM_mesh_wireframe(
 			BM_elem_flag_set(l->e, BM_ELEM_TAG, bm_loop_is_radial_boundary(l));
 		}
 	}
+	bm->elem_index_dirty &= ~BM_FACE;
 
 	/* duplicate tagged verts */
 	for (i = 0; i < totvert_orig; i++) {