From 2c1650ae8fd5ec1bdcb170a5f749d55f8bf61e62 Mon Sep 17 00:00:00 2001
From: Joseph Eagar <joeedh@gmail.com>
Date: Mon, 12 Sep 2022 10:50:51 -0700
Subject: Sculpt: Fix T100608: SCULPT_UNDO_FACE_SETS broken for redo

Always swap values when restoring sculpt undo data.
---
 source/blender/editors/sculpt_paint/sculpt_undo.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'source/blender')

diff --git a/source/blender/editors/sculpt_paint/sculpt_undo.c b/source/blender/editors/sculpt_paint/sculpt_undo.c
index 22928a8c934..af94cad88f3 100644
--- a/source/blender/editors/sculpt_paint/sculpt_undo.c
+++ b/source/blender/editors/sculpt_paint/sculpt_undo.c
@@ -479,7 +479,7 @@ static bool sculpt_undo_restore_face_sets(bContext *C, SculptUndoNode *unode)
   int *face_sets = CustomData_add_layer(
       &me->pdata, CD_SCULPT_FACE_SETS, CD_CONSTRUCT, NULL, me->totpoly);
   for (int i = 0; i < me->totpoly; i++) {
-    face_sets[i] = unode->face_sets[i];
+    SWAP(int, face_sets[i], unode->face_sets[i]);
   }
   return false;
 }
-- 
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