Imported Upstream version 5.10.0.69

Former-commit-id: fc39669a0b707dd3c063977486506b6793da2890

mcs/errors/cs8207.cs

@@ -0,0 +1,19 @@
+// CS8207: An expression tree cannot contain a discard
+// Line: 11
+
+using System;
+using System.Linq.Expressions;
+
+class X
+{
+	void Test ()
+	{
+		Expression<Func<bool>> e = () => TryGetValue (out _);
+	}
+
+	bool TryGetValue (out int arg)
+	{
+		arg = 3;
+		return true;
+	}
+}