[Bf-blender-cvs] [3cbc5dd90e3] master: Object: check for negative index access with duplicator reading UV's

[Campbell Barton]

Commit: 3cbc5dd90e3fc84dead86d2ae48176cf3beecc82
Author: Campbell Barton
Date:   Tue Sep 22 15:54:17 2020 +1000
Branches: master
https://developer.blender.org/rB3cbc5dd90e3fc84dead86d2ae48176cf3beecc82

Object: check for negative index access with duplicator reading UV's

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

M	source/blender/blenkernel/intern/object_dupli.c

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

diff --git a/source/blender/blenkernel/intern/object_dupli.c b/source/blender/blenkernel/intern/object_dupli.c
index ceb744d2fe0..39d6ee2700c 100644
--- a/source/blender/blenkernel/intern/object_dupli.c
+++ b/source/blender/blenkernel/intern/object_dupli.c
@@ -1080,7 +1080,9 @@ static void make_duplis_faces(const DupliContext *ctx)
         .vert_coords = vert_coords,
         .has_orco = (vert_coords != NULL),
         .has_uvs = (uv_idx != -1),
-        .cd_loop_uv_offset = CustomData_get_n_offset(&em->bm->ldata, CD_MLOOPUV, uv_idx),
+        .cd_loop_uv_offset = (uv_idx != -1) ?
+                                 CustomData_get_n_offset(&em->bm->ldata, CD_MLOOPUV, uv_idx) :
+                                 -1,
     };
     make_child_duplis(ctx, &fdd, make_child_duplis_faces_from_editmesh);
   }
@@ -1092,7 +1094,8 @@ static void make_duplis_faces(const DupliContext *ctx)
         .mpoly = me_eval->mpoly,
         .mloop = me_eval->mloop,
         .mvert = me_eval->mvert,
-        .mloopuv = CustomData_get_layer_n(&me_eval->ldata, CD_MLOOPUV, uv_idx),
+        .mloopuv = (uv_idx != -1) ? CustomData_get_layer_n(&me_eval->ldata, CD_MLOOPUV, uv_idx) :
+                                    NULL,
         .orco = CustomData_get_layer(&me_eval->vdata, CD_ORCO),
     };
     make_child_duplis(ctx, &fdd, make_child_duplis_faces_from_mesh);