From ce9c278a547117e335ae744358689bf919ee9767 Mon Sep 17 00:00:00 2001
From: Jason Malinowski <jason.malinowski@microsoft.com>
Date: Fri, 31 May 2019 12:54:01 -0700
Subject: [PATCH] Ensure that constructing a generic type doesn't loose
 nullability

---
 .../NullableHelpers/NamedTypeSymbolWithNullableAnnotation.cs    | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Workspaces/Core/Portable/Utilities/NullableHelpers/NamedTypeSymbolWithNullableAnnotation.cs b/src/Workspaces/Core/Portable/Utilities/NullableHelpers/NamedTypeSymbolWithNullableAnnotation.cs
index 34a4fba1b77..e1d6d22e682 100644
--- a/src/Workspaces/Core/Portable/Utilities/NullableHelpers/NamedTypeSymbolWithNullableAnnotation.cs
+++ b/src/Workspaces/Core/Portable/Utilities/NullableHelpers/NamedTypeSymbolWithNullableAnnotation.cs
@@ -52,7 +52,7 @@ public override TResult Accept<TResult>(SymbolVisitor<TResult> visitor)
 
             public INamedTypeSymbol Construct(params ITypeSymbol[] typeArguments)
             {
-                return WrappedSymbol.Construct(typeArguments);
+                return WrappedSymbol.Construct(typeArguments).WithNullability(Nullability);
             }
 
             public INamedTypeSymbol ConstructUnboundGenericType()
-- 
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