From 104bb4dcb75c22af892ea25406965f88efe7d650 Mon Sep 17 00:00:00 2001
From: AndriySvyryd <Andriy.Svyryd@microsoft.com>
Date: Thu, 12 Jul 2018 14:17:16 -0700
Subject: [PATCH] Add quirk mode for issue #12557

---
 src/EFCore.Relational/Storage/RelationalTypeMapping.cs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/EFCore.Relational/Storage/RelationalTypeMapping.cs b/src/EFCore.Relational/Storage/RelationalTypeMapping.cs
index fe9fc394e0a..bdacd91d1db 100644
--- a/src/EFCore.Relational/Storage/RelationalTypeMapping.cs
+++ b/src/EFCore.Relational/Storage/RelationalTypeMapping.cs
@@ -361,7 +361,8 @@ public virtual DbParameter CreateParameter(
             parameter.ParameterName = name;
 
             if (Converter != null
-                && !IsLegacyEnumValue(Converter, value))
+                && ((AppContext.TryGetSwitch("Microsoft.EntityFrameworkCore.Issue12557", out var isEnabled) && isEnabled)
+                    || !IsLegacyEnumValue(Converter, value)))
             {
                 value = Converter.ConvertToProvider(value);
             }