Fix T69404: Merge by distance crash with Unselected

Error introduced when removing the automerge bmesh operator.

4 files changed, 13 insertions, 18 deletions

diff --git a/source/blender/editors/include/ED_mesh.h b/source/blender/editors/include/ED_mesh.h
index f2ef3a60bc5..ee4798430ef 100644
--- a/source/blender/editors/include/ED_mesh.h
+++ b/source/blender/editors/include/ED_mesh.h
@@ -139,13 +139,13 @@ bool BMBVH_EdgeVisible(struct BMBVHTree *tree,
                        struct Object *obedit);
 
 /* editmesh_automerge.c */
-void EDBM_automerge(struct Scene *scene, struct Object *ob, bool update, const char hflag);
-void EDBM_automerge_and_split(struct Scene *scene,
-                              struct Object *ob,
+void EDBM_automerge(struct Object *ob, bool update, const char hflag, const float dist);
+void EDBM_automerge_and_split(struct Object *ob,
                               bool split_edges,
                               bool split_faces,
                               bool update,
-                              const char hflag);
+                              const char hflag,
+                              const float dist);
 
 /* editmesh_undo.c */
 void ED_mesh_undosys_type(struct UndoType *ut);
diff --git a/source/blender/editors/mesh/editmesh_automerge.c b/source/blender/editors/mesh/editmesh_automerge.c
index 62f4fc6bb7d..82f53aafad8 100644
--- a/source/blender/editors/mesh/editmesh_automerge.c
+++ b/source/blender/editors/mesh/editmesh_automerge.c
@@ -54,7 +54,7 @@
  * Used after transform operations.
  * \{ */
 
-void EDBM_automerge(Scene *scene, Object *obedit, bool update, const char hflag)
+void EDBM_automerge(Object *obedit, bool update, const char hflag, const float dist)
 {
   BMEditMesh *em = BKE_editmesh_from_object(obedit);
   BMesh *bm = em->bm;
@@ -69,7 +69,7 @@ void EDBM_automerge(Scene *scene, Object *obedit, bool update, const char hflag)
                BMO_FLAG_DEFAULTS,
                "find_doubles verts=%av keep_verts=%Hv dist=%f",
                hflag,
-               scene->toolsettings->doublimit);
+               dist);
 
   BMO_op_exec(bm, &findop);
 
@@ -286,18 +286,17 @@ static int edbm_automerge_and_split_sort_cmp_by_keys_cb(const void *index1_v,
   }
 }
 
-void EDBM_automerge_and_split(Scene *scene,
-                              Object *obedit,
+void EDBM_automerge_and_split(Object *obedit,
                               bool split_edges,
                               bool split_faces,
                               bool update,
-                              const char hflag)
+                              const char hflag,
+                              const float dist)
 {
   bool ok = false;
 
   BMEditMesh *em = BKE_editmesh_from_object(obedit);
   BMesh *bm = em->bm;
-  float dist = scene->toolsettings->doublimit;
   BMOperator findop, weldop;
   BMOpSlot *slot_targetmap;
   BMIter iter;
diff --git a/source/blender/editors/mesh/editmesh_tools.c b/source/blender/editors/mesh/editmesh_tools.c
index b88b6cbb3a6..e5023068100 100644
--- a/source/blender/editors/mesh/editmesh_tools.c
+++ b/source/blender/editors/mesh/editmesh_tools.c
@@ -3131,12 +3131,7 @@ static int edbm_remove_doubles_exec(bContext *C, wmOperator *op)
     BM_mesh_elem_hflag_enable_test(em->bm, htype_select, BM_ELEM_TAG, true, true, BM_ELEM_SELECT);
 
     if (use_unselected) {
-      EDBM_op_init(em, &bmop, op, "automerge verts=%hv dist=%f", BM_ELEM_SELECT, threshold);
-      BMO_op_exec(em->bm, &bmop);
-
-      if (!EDBM_op_finish(em, &bmop, op, true)) {
-        continue;
-      }
+      EDBM_automerge(obedit, false, BM_ELEM_SELECT, threshold);
     }
     else {
       EDBM_op_init(em, &bmop, op, "find_doubles verts=%hv dist=%f", BM_ELEM_SELECT, threshold);
diff --git a/source/blender/editors/transform/transform_conversions.c b/source/blender/editors/transform/transform_conversions.c
index 887d4bcf0e8..328cb1d1bbf 100644
--- a/source/blender/editors/transform/transform_conversions.c
+++ b/source/blender/editors/transform/transform_conversions.c
@@ -7128,10 +7128,11 @@ static void special_aftertrans_update__mesh(bContext *UNUSED(C), TransInfo *t)
 
       if (t->scene->toolsettings->automerge & AUTO_MERGE) {
         if (t->scene->toolsettings->automerge & AUTO_MERGE_AND_SPLIT) {
-          EDBM_automerge_and_split(t->scene, tc->obedit, true, true, true, hflag);
+          EDBM_automerge_and_split(
+              tc->obedit, true, true, true, hflag, t->scene->toolsettings->doublimit);
         }
         else {
-          EDBM_automerge(t->scene, tc->obedit, true, hflag);
+          EDBM_automerge(tc->obedit, true, hflag, t->scene->toolsettings->doublimit);
         }
       }