Add quirk for #9704

dotnet · Sep 13, 2017 · fd0f2c4 · fd0f2c4
1 parent cbd2add
commit fd0f2c4
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/src/EFCore/Metadata/Internal/InternalEntityTypeBuilder.cs b/src/EFCore/Metadata/Internal/InternalEntityTypeBuilder.cs
@@ -934,7 +934,9 @@ private IEnumerable<ForeignKey> FindConflictingRelationships(
             EntityType baseEntityType,
             ConfigurationSource configurationSource)
         {
-            var relationshipsToBeDetached = new HashSet<ForeignKey>();
+            var relationshipsToBeDetached = AppContext.TryGetSwitch("Microsoft.EntityFrameworkCore.Issue9704", out var isEnabled) && isEnabled
+                ? (ICollection<ForeignKey>)new List<ForeignKey>()
+                : new HashSet<ForeignKey>();
             foreach (var navigation in Metadata.GetDerivedNavigationsInclusive())
             {
                 if (!navigation.ForeignKey.GetConfigurationSource().Overrides(