[mcs] Special case flowanalysis of primitive structs only when they are imported. Fixes #28296

1 files changed, 13 insertions, 1 deletions

diff --git a/mcs/tests/test-616.cs b/mcs/tests/test-616.cs
index 6f189e836f2..d4adf2c26d4 100644
--- a/mcs/tests/test-616.cs
+++ b/mcs/tests/test-616.cs
@@ -25,7 +25,6 @@ namespace System
 	public struct UInt64 {}
 	public struct IntPtr {}
 	public struct UIntPtr {}
-	public struct Decimal { }
 	public class String { }
 	public class Delegate {}
 	public class MulticastDelegate {}
@@ -43,6 +42,19 @@ namespace System
 		
 	public interface IDisposable {}
 
+	public struct Decimal {
+
+		private int flags;
+
+		public Decimal(int[] bits) {
+			flags = 0;
+			SetBits(bits);
+		}
+
+		private void SetBits(int[] bits) {
+		}
+	}
+
 	partial class Type
 	{
 		public static bool operator == (Type left, Type right)