Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

mcs/tests/test-401.cs

@@ -0,0 +1,49 @@
+// Compiler options: -unsafe
+
+//
+// This test excercises stackalloc, some pointer arithmetic,
+// and dereferences
+//
+using System;
+unsafe class X {
+	public static int Main ()
+	{
+		char *ptr = stackalloc char [10];
+	        char *cptr = ptr;
+		int i;
+		long l = 0;
+		ulong ul = 0;
+		byte b = 0;
+		
+		for (i = 0; i < 10; i++)
+			ptr [i] = (char) (i + 10);
+
+		for (i = 0; i < 10; i++){
+			if (*ptr != (char) (i + 10))
+				return 200 + i;
+			ptr++;
+		}
+
+
+		// Now test index access with longs
+		if (cptr [l] != 10){
+			return 1;
+		}
+		if (cptr [ul] != 10)
+			return 2;
+		if (cptr [b] != 10)
+			return 3;
+
+		//
+		// Try to compile non-int values
+		//
+		byte* bptr = (byte*) 5;
+                ushort us = 3;
+                byte* ret = (byte*) (bptr + us);
+			
+		Console.WriteLine ("Ok");
+		return 0;
+	}
+}	
+
+