From 2da10f583b742354141420d7d6b16aa6d5ab89f6 Mon Sep 17 00:00:00 2001
From: Stephen Toub <stoub@microsoft.com>
Date: Thu, 17 Jun 2021 23:33:51 -0400
Subject: [PATCH] Special-case no attributes in GetCustomAttributeData

---
 .../src/System/Reflection/CustomAttribute.cs                  | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/coreclr/System.Private.CoreLib/src/System/Reflection/CustomAttribute.cs b/src/coreclr/System.Private.CoreLib/src/System/Reflection/CustomAttribute.cs
index 1b825f0dc952f..cf35de2462752 100644
--- a/src/coreclr/System.Private.CoreLib/src/System/Reflection/CustomAttribute.cs
+++ b/src/coreclr/System.Private.CoreLib/src/System/Reflection/CustomAttribute.cs
@@ -237,6 +237,10 @@ private static CustomAttributeType InitCustomAttributeType(RuntimeType parameter
         private static IList<CustomAttributeData> GetCustomAttributes(RuntimeModule module, int tkTarget)
         {
             CustomAttributeRecord[] records = GetCustomAttributeRecords(module, tkTarget);
+            if (records.Length == 0)
+            {
+                return Array.Empty<CustomAttributeData>();
+            }
 
             CustomAttributeData[] customAttributes = new CustomAttributeData[records.Length];
             for (int i = 0; i < records.Length; i++)