From 32bf6455a019221764b22c43754e701b7d6e3c8e Mon Sep 17 00:00:00 2001
From: Johnny Matthews <johnny.matthews@gmail.com>
Date: Sun, 29 May 2022 14:19:05 -0500
Subject: Fix T98400: Duplicate node crash

---
 source/blender/nodes/geometry/nodes/node_geo_duplicate_elements.cc | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/source/blender/nodes/geometry/nodes/node_geo_duplicate_elements.cc b/source/blender/nodes/geometry/nodes/node_geo_duplicate_elements.cc
index 1b26cfe31fe..75987ec2317 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_duplicate_elements.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_duplicate_elements.cc
@@ -128,6 +128,9 @@ static void threaded_id_offset_copy(const Span<int> offsets,
     for (const int i : range) {
       dst[offsets[i]] = src[i];
       const int count = offsets[i + 1] - offsets[i];
+      if (count == 0) {
+        continue;
+      }
       for (const int i_duplicate : IndexRange(1, count - 1)) {
         dst[offsets[i] + i_duplicate] = noise::hash(src[i], i_duplicate);
       }
-- 
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