From 81dcbfb9a16247a59ae3d37b6b556fa5962995a0 Mon Sep 17 00:00:00 2001
From: Ellpeck <me@ellpeck.de>
Date: Wed, 22 Sep 2021 20:33:11 +0200
Subject: [PATCH] Fixed DynamicEnum AddFlag going into an infinite loop

---
 CHANGELOG.md             | 3 +++
 MLEM.Data/DynamicEnum.cs | 2 +-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index c12703b..794a45b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -51,6 +51,9 @@ Improvements
 - Improved CopyExtensions construction speed
 - Improved DynamicEnum caching
 
+Fixes
+- Fixed DynamicEnum AddFlag going into an infinite loop
+
 ## 5.0.0
 ### MLEM
 Additions
diff --git a/MLEM.Data/DynamicEnum.cs b/MLEM.Data/DynamicEnum.cs
index 66de417..b57aabf 100644
--- a/MLEM.Data/DynamicEnum.cs
+++ b/MLEM.Data/DynamicEnum.cs
@@ -148,7 +148,7 @@ namespace MLEM.Data {
         public static T AddFlag<T>(string name) where T : DynamicEnum {
             BigInteger value = 0;
             while (GetStorage(typeof(T)).Values.ContainsKey(value))
-                value <<= 1;
+                value = value != 0 ? value << 1 : 1;
             return Add<T>(name, value);
         }