Imported Upstream version 5.10.0.47

Former-commit-id: d0813289fa2d35e1f8ed77530acb4fb1df441bc0

mcs/errors/cs8151.cs

@@ -0,0 +1,12 @@
+// CS8151: The return by reference expression must be of type `string' because this method returns by reference
+// Line: 10
+
+public class X
+{
+	int field;
+
+	ref string TestMethod ()
+	{
+		return ref field;
+	}
+}