From a2e10675851a57dff1d67064ffabd6ed7aba7436 Mon Sep 17 00:00:00 2001
From: Richard Szalay <richard@richardszalay.com>
Date: Mon, 2 Mar 2026 11:42:58 +1100
Subject: [PATCH] Fix binary incompatibility introduced by 4.4.0

---
 .../ConfigurationFeatureDefinitionProvider.cs          | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/Microsoft.FeatureManagement/ConfigurationFeatureDefinitionProvider.cs b/src/Microsoft.FeatureManagement/ConfigurationFeatureDefinitionProvider.cs
index 78161707..bc3af5b4 100644
--- a/src/Microsoft.FeatureManagement/ConfigurationFeatureDefinitionProvider.cs
+++ b/src/Microsoft.FeatureManagement/ConfigurationFeatureDefinitionProvider.cs
@@ -34,6 +34,14 @@ public sealed class ConfigurationFeatureDefinitionProvider : IFeatureDefinitionP
 
         const string ParseValueErrorString = "Invalid setting '{0}' with value '{1}' for feature '{2}'.";
 
+        /// <summary>
+        /// Creates a configuration feature definition provider.
+        /// </summary>
+        /// <param name="configuration">The configuration of feature definitions.</param>
+        public ConfigurationFeatureDefinitionProvider(IConfiguration configuration) : this(configuration, null)
+        {
+        }
+
         /// <summary>
         /// Creates a configuration feature definition provider.
         /// </summary>
@@ -41,7 +49,7 @@ public sealed class ConfigurationFeatureDefinitionProvider : IFeatureDefinitionP
         /// <param name="options">The options for the configuration feature definition provider.</param>
         public ConfigurationFeatureDefinitionProvider(
             IConfiguration configuration,
-            ConfigurationFeatureDefinitionProviderOptions options = null)
+            ConfigurationFeatureDefinitionProviderOptions options)
         {
             _configuration = configuration ?? throw new ArgumentNullException(nameof(configuration));
             _options = options ?? new ConfigurationFeatureDefinitionProviderOptions();