From 88819e91d8d87b0921a9d19f4b5ef315b13f6da0 Mon Sep 17 00:00:00 2001
From: Jacques Lucke <jacques@blender.org>
Date: Thu, 3 Feb 2022 16:52:16 +0100
Subject: Fix T94435: remove anonymous attributes when applying modifier

Differential Revision: https://developer.blender.org/D13994
---
 source/blender/blenkernel/intern/customdata.cc | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

(limited to 'source/blender/blenkernel/intern')

diff --git a/source/blender/blenkernel/intern/customdata.cc b/source/blender/blenkernel/intern/customdata.cc
index 02b50027ef9..e4c18325d76 100644
--- a/source/blender/blenkernel/intern/customdata.cc
+++ b/source/blender/blenkernel/intern/customdata.cc
@@ -2780,6 +2780,24 @@ void CustomData_free_layers(CustomData *data, int type, int totelem)
   }
 }
 
+void CustomData_free_layers_anonymous(struct CustomData *data, int totelem)
+{
+  while (true) {
+    bool found_anonymous_layer = false;
+    for (int i = 0; i < data->totlayer; i++) {
+      const CustomDataLayer *layer = &data->layers[i];
+      if (layer->anonymous_id != NULL) {
+        CustomData_free_layer(data, layer->type, totelem, i);
+        found_anonymous_layer = true;
+        break;
+      }
+    }
+    if (!found_anonymous_layer) {
+      break;
+    }
+  }
+}
+
 bool CustomData_has_layer(const CustomData *data, int type)
 {
   return (CustomData_get_layer_index(data, type) != -1);
-- 
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