Imported Upstream version 5.10.0.47

Former-commit-id: d0813289fa2d35e1f8ed77530acb4fb1df441bc0

mcs/errors/cs0459-5.cs

@@ -0,0 +1,13 @@
+// CS0459: Cannot take the address of `this' because it is read-only
+// Line: 11
+// Compiler options: -unsafe -langversion:latest
+
+readonly struct X
+{
+	unsafe void Test ()
+	{
+		fixed (X* x = &this) {
+
+		}
+	}
+}