Imported Upstream version 5.18.0.142

Former-commit-id: 7467d4b717762eeaf652d77f1486dd11ffb1ff1f

mcs/tests/test-fixed-01.cs

@@ -0,0 +1,20 @@
+// Compiler options: -unsafe -langversion:latest
+
+unsafe class C
+{
+	public static void Main ()
+	{
+		fixed (int* p = new Fixable ()) {
+			System.Console.WriteLine (*p);
+			System.Console.WriteLine (p [2]);
+		}
+	}
+
+	struct Fixable
+	{
+		public ref int GetPinnableReference ()
+		{
+			return ref (new int[] { 1, 2, 3 })[0];
+		}
+	}
+}