From f42d0c932266cffa2d995ee950e628d7dcbff521 Mon Sep 17 00:00:00 2001
From: Marc Chevrier <marc.chevrier@gmail.com>
Date: Fri, 29 Apr 2022 16:49:14 +0200
Subject: cm::enum_set: fix compilation warning

---
 Utilities/std/cmext/enum_set | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/Utilities/std/cmext/enum_set b/Utilities/std/cmext/enum_set
index f97a04c..4225b82 100644
--- a/Utilities/std/cmext/enum_set
+++ b/Utilities/std/cmext/enum_set
@@ -58,7 +58,11 @@ public:
 
   enum_set_iterator& operator--()
   {
-    while (--this->Index >= 0 && !this->Set->test(this->Index))
+    if (this->Index == 0) {
+      return *this;
+    }
+
+    while (!this->Set->test(--this->Index) && this->Index != 0)
       ;
 
     return *this;
-- 
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