Revert "Fix object::GetType when remoting is enabled."

This reverts commit 93e2d1dc48339be472300910e9290939ee253177.

35 files changed, 620 insertions, 85 deletions

diff --git a/mcs/class/Mono.Security/Test/Mono.Math/ArithmeticBigTest.cs b/mcs/class/Mono.Security/Test/Mono.Math/ArithmeticBigTest.cs
index 94ff296ced5..ac05640807f 100644
--- a/mcs/class/Mono.Security/Test/Mono.Math/ArithmeticBigTest.cs
+++ b/mcs/class/Mono.Security/Test/Mono.Math/ArithmeticBigTest.cs
@@ -179,48 +179,48 @@ namespace MonoTests.Mono.Math.Arithmetic.Big {
 		[Test]
 		public void AgtB () 
 		{
-			Assertion.Assert(A > B);
+			Assert.IsTrue(A > B);
 		}
 		
 		[Test]
 		public void ANotLtB () 
 		{
-			Assertion.Assert(!(A < B));
+			Assert.IsTrue(!(A < B));
 		}
 		
 		[Test]
 		public void BNotGtA () 
 		{
-			Assertion.Assert(!(B > A));
+			Assert.IsTrue(!(B > A));
 		}
 		
 		[Test]
 		public void AltB () 
 		{
-			Assertion.Assert(B < A);
+			Assert.IsTrue(B < A);
 		}
 		
 		[Test]
 		public void AeqA () 
 		{
-			Assertion.Assert(A == A);
+			Assert.AreEqual(A, A);
 		}
 		[Test]
 		public void BeqB () 
 		{
-			Assertion.Assert(B == B);
+			Assert.AreEqual(B, B);
 		}
 		
 		[Test]
 		public void AneqB () 
 		{
-			Assertion.Assert(A != B);
+			Assert.AreNotEqual(A, B);
 		}
 		
 		[Test]
 		public void BneqA () 
 		{
-			Assertion.Assert(B != A);
+			Assert.AreNotEqual(B, A);
 		}
 
 		#endregion
diff --git a/mcs/class/Mono.Security/Test/Mono.Math/SearchGeneratorTest.cs b/mcs/class/Mono.Security/Test/Mono.Math/SearchGeneratorTest.cs
index 189dbd9d0df..80434f9983c 100644
--- a/mcs/class/Mono.Security/Test/Mono.Math/SearchGeneratorTest.cs
+++ b/mcs/class/Mono.Security/Test/Mono.Math/SearchGeneratorTest.cs
@@ -62,7 +62,7 @@ namespace MonoTests.Mono.Math {
 			for (int i = 0; i < 5; i++) {
 				ContextData ctx = new ContextData (128, (uint)r.Next (int.MinValue, int.MaxValue));
 				BigInteger p = GenerateNewPrime (128, ctx);
-				Assertion.Assert (p.TestBit (1));
+				Assert.IsTrue (p.TestBit (1));
 				uint d = ctx.testData;
 				for (uint j = 128 - 2; d > 0; j--, d >>= 1)
 					Assertion.AssertEquals ((d&1) == 1, p.TestBit (j));
diff --git a/mcs/class/Mono.Security/Test/Mono.Security.Authenticode/AuthenticodeDeformatterTest.cs b/mcs/class/Mono.Security/Test/Mono.Security.Authenticode/AuthenticodeDeformatterTest.cs
index d15087aef00..0a1fd9f3d1a 100644
--- a/mcs/class/Mono.Security/Test/Mono.Security.Authenticode/AuthenticodeDeformatterTest.cs
+++ b/mcs/class/Mono.Security/Test/Mono.Security.Authenticode/AuthenticodeDeformatterTest.cs
@@ -678,7 +678,7 @@ namespace MonoTests.Mono.Security.Authenticode {
 
 		private string WriteFile () 
 		{
-			string filename = "helloworld_signed.exe";
+			string filename = Path.Combine (Path.GetTempPath (), "helloworld_signed.exe");
 			try {
 				if (File.Exists (filename)) {
 					File.Delete (filename);
diff --git a/mcs/class/Mono.Security/Test/Mono.Security.Authenticode/PrivateKeyTest.cs b/mcs/class/Mono.Security/Test/Mono.Security.Authenticode/PrivateKeyTest.cs
index ee8145cff6b..0f529496e11 100644
--- a/mcs/class/Mono.Security/Test/Mono.Security.Authenticode/PrivateKeyTest.cs
+++ b/mcs/class/Mono.Security/Test/Mono.Security.Authenticode/PrivateKeyTest.cs
@@ -96,7 +96,13 @@ public class PrivateKeyTest : Assertion {
 		Assert (msg, a);
 	}
 
-	private const string testfile = "test.pvk";
+	string testfile;
+		
+	[TestFixtureSetUp]
+	public void FixtureSetup ()
+	{
+		testfile = Path.Combine (Path.GetTempPath (), "test.pvk");
+	}
 
 	[TearDown]
 	public void TearDown () 
diff --git a/mcs/class/Mono.Security/Test/Mono.Security.Authenticode/SoftwarePublisherCertificateTest.cs b/mcs/class/Mono.Security/Test/Mono.Security.Authenticode/SoftwarePublisherCertificateTest.cs
index 6e6adce2b86..11136a48904 100644
--- a/mcs/class/Mono.Security/Test/Mono.Security.Authenticode/SoftwarePublisherCertificateTest.cs
+++ b/mcs/class/Mono.Security/Test/Mono.Security.Authenticode/SoftwarePublisherCertificateTest.cs
@@ -381,7 +381,13 @@ namespace MonoTests.Mono.Security.Authenticode {
 		0x77, 0xEF, 0xEC, 0x17, 0x92, 0xC7, 0xD6, 0xCD, 0xE1, 0x2A, 0x2E, 0xE7, 
 		0xF3, 0xED, 0x7F, 0x66, 0x86, 0x31, 0x00 };
 	
-		private const string testfile = "test.spc";
+		string testfile;
+
+		[TestFixtureSetUp]
+		public void FixtureSetup ()
+		{
+			testfile = Path.Combine (Path.GetTempPath (), "test.spc");
+		}
 	
 		[TearDown]
 		public void TearDown () 
@@ -397,11 +403,11 @@ namespace MonoTests.Mono.Security.Authenticode {
 				if (unicode) {
 					data = Encoding.Unicode.GetBytes (s);
 				} else if (pem) {
-					string b64pem = "-----BEGIN PKCS7-----\n" + s + "\n-----END PKCS7-----";
-					data = Encoding.ASCII.GetBytes (b64pem);
-			using (FileStream fs = File.Create ("bad.pem")) {
-				fs.Write (data, 0, data.Length);
-			}
+					//string b64pem = "-----BEGIN PKCS7-----\n" + s + "\n-----END PKCS7-----";
+					//data = Encoding.ASCII.GetBytes (b64pem);
+					//using (FileStream fs = File.Create ("bad.pem")) {
+					//	fs.Write (data, 0, data.Length);
+					//}
 				} else {
 					data = Encoding.ASCII.GetBytes (s);
 				}
diff --git a/mcs/class/Mono.Security/Test/Mono.Security/StrongNameTest.cs b/mcs/class/Mono.Security/Test/Mono.Security/StrongNameTest.cs
index 43bc7a5fbb9..05e013cd4aa 100644
--- a/mcs/class/Mono.Security/Test/Mono.Security/StrongNameTest.cs
+++ b/mcs/class/Mono.Security/Test/Mono.Security/StrongNameTest.cs
@@ -127,8 +127,8 @@ namespace MonoTests.Mono.Security {
 			AssertEquals ("key.PublicKeyToken", sn1.PublicKeyToken, sn2.PublicKeyToken);
 		}
 
-		private const string Signed = "hellosigned.exe";
-		private const string Delay = "hellodelay.exe";
+		string Signed;
+		string Delay;
 		private StrongName sn;
 		private static byte[] signedData = {
 			0x4D, 0x5A, 0x90, 0x00, 0x03, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 
@@ -787,11 +787,16 @@ namespace MonoTests.Mono.Security {
 		[SetUp]
 		public void SetUp () 
 		{
+			Signed = Path.Combine (Path.GetTempPath (), "hellosigned.exe");
+			Delay = Path.Combine (Path.GetTempPath (), "hellodelay.exe");
+
 			sn = new StrongName (key);
 			// write hellosigned.exe to disk
 			FileStream fs = File.OpenWrite (Signed);
 			fs.Write (signedData, 0, signedData.Length);
 			fs.Close ();
+
+
 			// write hellodelay.exe to disk
 			fs = File.OpenWrite (Delay);
 			fs.Write (delayData, 0, delayData.Length);
diff --git a/mcs/class/System.Net.Http/Test/System.Net.Http/HttpClientTest.cs b/mcs/class/System.Net.Http/Test/System.Net.Http/HttpClientTest.cs
index c5a8dc430ad..6651be4a64f 100644
--- a/mcs/class/System.Net.Http/Test/System.Net.Http/HttpClientTest.cs
+++ b/mcs/class/System.Net.Http/Test/System.Net.Http/HttpClientTest.cs
@@ -525,7 +525,7 @@ namespace MonoTests.System.Net.Http
 					client.SendAsync (request, HttpCompletionOption.ResponseContentRead).Wait (WaitTimeout);
 					Assert.Fail ("#2");
 				} catch (AggregateException e) {
-					Assert.IsInstanceOfType (typeof (HttpRequestException), e.InnerException, "#3");
+					Assert.IsTrue (e.InnerException is HttpRequestException, "#3");
 				}
 
 			} finally {
@@ -699,7 +699,7 @@ namespace MonoTests.System.Net.Http
 					client.GetByteArrayAsync (LocalServer).Wait (WaitTimeout);
 					Assert.Fail ("#1");
 				} catch (AggregateException e) {
-					Assert.IsInstanceOfType (typeof (HttpRequestException), e.InnerException, "#2");
+					Assert.IsTrue (e.InnerException is HttpRequestException , "#2");
 				}
 			} finally {
 				listener.Close ();
@@ -726,7 +726,7 @@ namespace MonoTests.System.Net.Http
 					client.GetStringAsync (LocalServer).Wait (WaitTimeout);
 					Assert.Fail ("#1");
 				} catch (AggregateException e) {
-					Assert.IsInstanceOfType (typeof (HttpRequestException), e.InnerException, "#2");
+					Assert.IsTrue (e.InnerException is HttpRequestException, "#2");
 				}
 			} finally {
 				listener.Abort ();
diff --git a/mcs/class/System.Net.Http/Test/System.Net.Http/StreamContentTest.cs b/mcs/class/System.Net.Http/Test/System.Net.Http/StreamContentTest.cs
index b4a541afab2..edd4b839c16 100644
--- a/mcs/class/System.Net.Http/Test/System.Net.Http/StreamContentTest.cs
+++ b/mcs/class/System.Net.Http/Test/System.Net.Http/StreamContentTest.cs
@@ -331,7 +331,7 @@ namespace MonoTests.System.Net.Http
 				Assert.IsTrue (sc.LoadIntoBufferAsync (50).Wait (200));
 				Assert.Fail ("#1");
 			} catch (AggregateException e) {
-				Assert.IsInstanceOfType (typeof (HttpRequestException), e.InnerException, "#2");
+				Assert.IsTrue (e.InnerException is HttpRequestException, "#2");
 			}
 		}
 
diff --git a/mcs/class/System.Net.Http/Test/System.Net.Http/StringContentTest.cs b/mcs/class/System.Net.Http/Test/System.Net.Http/StringContentTest.cs
index 51a077176b8..f031fc3ea8e 100644
--- a/mcs/class/System.Net.Http/Test/System.Net.Http/StringContentTest.cs
+++ b/mcs/class/System.Net.Http/Test/System.Net.Http/StringContentTest.cs
@@ -61,9 +61,10 @@ namespace MonoTests.System.Net.Http
 
 			var s = new StringContent ("aaa", null, "multipart/*");
 			Assert.AreEqual ("Content-Type: multipart/*; charset=utf-8\r\n", s.Headers.ToString ());
-
+#if !MOBILE
 			s = new StringContent ("aaa", Encoding.GetEncoding (852), "multipart/*");
 			Assert.AreEqual ("Content-Type: multipart/*; charset=ibm852\r\n", s.Headers.ToString ());
+#endif
 		}
 
 		[Test]
diff --git a/mcs/class/System.Web.Extensions/System.Web.Script.Serialization/JsonSerializer.cs b/mcs/class/System.Web.Extensions/System.Web.Script.Serialization/JsonSerializer.cs
index 42d59afb18e..595727220ee 100644
--- a/mcs/class/System.Web.Extensions/System.Web.Script.Serialization/JsonSerializer.cs
+++ b/mcs/class/System.Web.Extensions/System.Web.Script.Serialization/JsonSerializer.cs
@@ -431,12 +431,12 @@ namespace System.Web.Script.Serialization
 
 		void WriteValue (StringBuilder output, float value)
 		{
-			StringBuilderExtensions.AppendCount (output, maxJsonLength, value.ToString ("r"));
+			StringBuilderExtensions.AppendCount (output, maxJsonLength, value.ToString ("r", CultureInfo.InvariantCulture));
 		}
 
 		void WriteValue (StringBuilder output, double value)
 		{
-			StringBuilderExtensions.AppendCount (output, maxJsonLength, value.ToString ("r"));
+			StringBuilderExtensions.AppendCount (output, maxJsonLength, value.ToString ("r", CultureInfo.InvariantCulture));
 		}
 		
 		void WriteValue (StringBuilder output, Guid value)
diff --git a/mcs/class/System.XML/Test/System.Xml.Schema/XmlSchemaTests.cs b/mcs/class/System.XML/Test/System.Xml.Schema/XmlSchemaTests.cs
index 0e91387a4be..779c8bd1e1e 100644
--- a/mcs/class/System.XML/Test/System.Xml.Schema/XmlSchemaTests.cs
+++ b/mcs/class/System.XML/Test/System.Xml.Schema/XmlSchemaTests.cs
@@ -173,6 +173,7 @@ namespace MonoTests.System.Xml
 		}
 
 		[Test]
+		[Category ("MobileNotWorking")]
 		public void TestSimpleMutualImport ()
 		{
 			XmlReader r = new XmlTextReader ("Test/XmlFiles/xsd/inter-inc-1.xsd");
diff --git a/mcs/class/System.XML/Test/System.Xml.Serialization.Advanced/SchemaImporterExtensionCollectionTests.cs b/mcs/class/System.XML/Test/System.Xml.Serialization.Advanced/SchemaImporterExtensionCollectionTests.cs
index 718e62c1fff..20b0d5dbaf8 100644
--- a/mcs/class/System.XML/Test/System.Xml.Serialization.Advanced/SchemaImporterExtensionCollectionTests.cs
+++ b/mcs/class/System.XML/Test/System.Xml.Serialization.Advanced/SchemaImporterExtensionCollectionTests.cs
@@ -28,7 +28,7 @@
 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 //
 
-#if NET_2_0
+#if !MOBILE
 
 using System;
 using System.CodeDom;
diff --git a/mcs/class/System.XML/Test/System.Xml.Serialization.Advanced/SchemaImporterExtensionTests.cs b/mcs/class/System.XML/Test/System.Xml.Serialization.Advanced/SchemaImporterExtensionTests.cs
index 5b8d9de6dcc..7311fbb27e8 100644
--- a/mcs/class/System.XML/Test/System.Xml.Serialization.Advanced/SchemaImporterExtensionTests.cs
+++ b/mcs/class/System.XML/Test/System.Xml.Serialization.Advanced/SchemaImporterExtensionTests.cs
@@ -28,7 +28,7 @@
 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 //
 
-#if NET_2_0
+#if !MOBILE
 
 using System;
 using System.CodeDom;
diff --git a/mcs/class/System.XML/Test/System.Xml.Serialization/SoapSchemaExporterTests.cs b/mcs/class/System.XML/Test/System.Xml.Serialization/SoapSchemaExporterTests.cs
index 9f0e0191135..b1c7597c150 100644
--- a/mcs/class/System.XML/Test/System.Xml.Serialization/SoapSchemaExporterTests.cs
+++ b/mcs/class/System.XML/Test/System.Xml.Serialization/SoapSchemaExporterTests.cs
@@ -7,6 +7,8 @@
 // (C) 2005 Novell
 // 
 
+#if !MOBILE
+
 using System;
 using System.Collections;
 using System.Globalization;
@@ -1159,3 +1161,5 @@ namespace MonoTests.System.XmlSerialization
 		}
 	}
 }
+
+#endif
\ No newline at end of file
diff --git a/mcs/class/System.XML/Test/System.Xml.Serialization/XmlCodeExporterTests.cs b/mcs/class/System.XML/Test/System.Xml.Serialization/XmlCodeExporterTests.cs
index 25a1ecf74bf..91f0ed1d282 100644
--- a/mcs/class/System.XML/Test/System.Xml.Serialization/XmlCodeExporterTests.cs
+++ b/mcs/class/System.XML/Test/System.Xml.Serialization/XmlCodeExporterTests.cs
@@ -8,6 +8,8 @@
 // (C) 2006 Novell
 // 
 
+#if !MOBILE
+
 using System;
 using System.CodeDom;
 using System.CodeDom.Compiler;
@@ -1304,3 +1306,5 @@ namespace MonoTests.System.XmlSerialization
 		}
 	}
 }
+
+#endif
diff --git a/mcs/class/System.XML/Test/System.Xml.Serialization/XmlSchemaExporterTests.cs b/mcs/class/System.XML/Test/System.Xml.Serialization/XmlSchemaExporterTests.cs
index f8713258a0f..fc55852869d 100644
--- a/mcs/class/System.XML/Test/System.Xml.Serialization/XmlSchemaExporterTests.cs
+++ b/mcs/class/System.XML/Test/System.Xml.Serialization/XmlSchemaExporterTests.cs
@@ -1783,11 +1783,9 @@ namespace MonoTests.System.XmlSerialization
 		[Test]
 #if NET_2_0
 		[Category ("NotWorking")] // support for XmlSchemaProvider is not implemented
-#else
-		[Category ("NotWorking")] // mark it NotWorking until fixes have landed in svn
 #endif
 		public void ExportXmlSerializable_SchemaProvider1 () {
-			XmlSchemas schemas = schemas = Export (typeof (PrimitiveSchemaProvider));
+			XmlSchemas schemas = Export (typeof (PrimitiveSchemaProvider));
 			Assert.AreEqual (1, schemas.Count, "#1");
 
 			StringWriter sw = new StringWriter ();
diff --git a/mcs/class/System.XML/Test/System.Xml.Serialization/XmlSchemaImporterTests.cs b/mcs/class/System.XML/Test/System.Xml.Serialization/XmlSchemaImporterTests.cs
index 80958667639..fe4838cb2e9 100644
--- a/mcs/class/System.XML/Test/System.Xml.Serialization/XmlSchemaImporterTests.cs
+++ b/mcs/class/System.XML/Test/System.Xml.Serialization/XmlSchemaImporterTests.cs
@@ -39,8 +39,9 @@ using System.IO;
 using System.Xml;
 using System.Xml.Schema;
 using System.Xml.Serialization;
+#if !MOBILE
 using Microsoft.CSharp;
-
+#endif
 using NUnit.Framework;
 
 using MonoTests.System.Xml.TestClasses;
@@ -891,6 +892,8 @@ namespace MonoTests.System.Xml.Serialization
 			Assert.AreEqual ("UInt16", map.TypeName, "#6");
 		}
 
+#if !MOBILE
+
 		[Test]
 		public void ImportTypeMapping_EnumSimpleContent ()
 		{
@@ -1075,30 +1078,6 @@ namespace MonoTests.System.Xml.Serialization
 			return null;
 		}
 
-		private static XmlSchemas ExportType (Type type)
-		{
-			XmlReflectionImporter ri = new XmlReflectionImporter ("NS" + type.Name);
-			XmlSchemas schemas = new XmlSchemas ();
-			XmlSchemaExporter sx = new XmlSchemaExporter (schemas);
-			XmlTypeMapping tm = ri.ImportTypeMapping (type);
-			sx.ExportTypeMapping (tm);
-			return schemas;
-		}
-
-		private static ArrayList GetXmlQualifiedNames (XmlSchemas schemas)
-		{
-			ArrayList qnames = new ArrayList ();
-
-			foreach (XmlSchema schema in schemas) {
-				if (!schema.IsCompiled) schema.Compile (null);
-				foreach (XmlSchemaObject ob in schema.Items)
-					if (ob is XmlSchemaElement)
-						qnames.Add (((XmlSchemaElement) ob).QualifiedName);
-			}
-
-			return qnames;
-		}
-
 		[Test]
 		[ExpectedException (typeof (InvalidOperationException))]
 		public void ImportTypeMappingNonExistent ()
@@ -1238,5 +1217,31 @@ namespace MonoTests.System.Xml.Serialization
 				xss.Add (XmlSchema.Read (new XmlTextReader (new StringReader (xsd)), null));
 			return new XmlSchemaImporter (xss);
 		}
+
+#endif
+
+		private static ArrayList GetXmlQualifiedNames (XmlSchemas schemas)
+		{
+			ArrayList qnames = new ArrayList ();
+			
+			foreach (XmlSchema schema in schemas) {
+				if (!schema.IsCompiled) schema.Compile (null);
+				foreach (XmlSchemaObject ob in schema.Items)
+					if (ob is XmlSchemaElement)
+						qnames.Add (((XmlSchemaElement) ob).QualifiedName);
+			}
+			
+			return qnames;
+		}
+
+		private static XmlSchemas ExportType (Type type)
+		{
+			XmlReflectionImporter ri = new XmlReflectionImporter ("NS" + type.Name);
+			XmlSchemas schemas = new XmlSchemas ();
+			XmlSchemaExporter sx = new XmlSchemaExporter (schemas);
+			XmlTypeMapping tm = ri.ImportTypeMapping (type);
+			sx.ExportTypeMapping (tm);
+			return schemas;
+		}
 	}
 }
diff --git a/mcs/class/System.XML/Test/System.Xml.Serialization/XmlSerializerTests.cs b/mcs/class/System.XML/Test/System.Xml.Serialization/XmlSerializerTests.cs
index a7f00ab1e24..ed63ede99fa 100644
--- a/mcs/class/System.XML/Test/System.Xml.Serialization/XmlSerializerTests.cs
+++ b/mcs/class/System.XML/Test/System.Xml.Serialization/XmlSerializerTests.cs
@@ -2187,8 +2187,7 @@ namespace MonoTests.System.XmlSerialization
 			ser.Deserialize (new XmlTextReader (xml, XmlNodeType.Document, null));
 		}
 
-#if NET_2_0
-#if !TARGET_JVM
+#if !TARGET_JVM && !MOBILE
 		[Test]
 		public void GenerateSerializerGenerics ()
 		{
@@ -2266,7 +2265,6 @@ namespace MonoTests.System.XmlSerialization
 			Assert.AreEqual (TestEnumWithNulls.bb, w.nenum.Value);
 			Assert.AreEqual (t, w.ndate.Value);
 		}
-#endif
 
 		[Test]
 		public void SerializeBase64Binary()
diff --git a/mcs/class/System.XML/Test/System.Xml/XmlDocumentEventTests.cs b/mcs/class/System.XML/Test/System.Xml/XmlDocumentEventTests.cs
index 4df96725fbb..657d672e5bc 100644
--- a/mcs/class/System.XML/Test/System.Xml/XmlDocumentEventTests.cs
+++ b/mcs/class/System.XML/Test/System.Xml/XmlDocumentEventTests.cs
@@ -18,11 +18,6 @@ namespace MonoTests.System.Xml
 	[TestFixture]

 	public class XmlDocumentEventTests

 	{

-		public static void Main ()

-		{

-			new XmlDocumentEventTests ().InsertingOrder ();

-		}

-

 		private StringBuilder eventLogBuilder = new StringBuilder ();

 

 		private XmlDocument GetEventDocument ()

diff --git a/mcs/class/System.XML/Test/System.Xml/XmlSecureResolverCas.cs b/mcs/class/System.XML/Test/System.Xml/XmlSecureResolverCas.cs
index d8035e4d010..52de90d1414 100644
--- a/mcs/class/System.XML/Test/System.Xml/XmlSecureResolverCas.cs
+++ b/mcs/class/System.XML/Test/System.Xml/XmlSecureResolverCas.cs
@@ -27,6 +27,8 @@
 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 //
 
+#if !MOBILE
+
 using NUnit.Framework;
 
 using System;
@@ -82,3 +84,5 @@ namespace MonoCasTests.System.Xml {
 		}
 	}
 }
+
+#endif
\ No newline at end of file
diff --git a/mcs/class/System.XML/Test/System.Xml/XmlSecureResolverTests.cs b/mcs/class/System.XML/Test/System.Xml/XmlSecureResolverTests.cs
index 0603a694d42..c97407de984 100644
--- a/mcs/class/System.XML/Test/System.Xml/XmlSecureResolverTests.cs
+++ b/mcs/class/System.XML/Test/System.Xml/XmlSecureResolverTests.cs
@@ -8,6 +8,8 @@
 // Copyright (C) 2004-2005 Novell, Inc (http://www.novell.com)
 //
 
+#if !MOBILE
+
 using System;
 using System.Collections;
 using System.IO;
@@ -132,3 +134,4 @@ namespace MonoTestsXml
 	}
 }
 
+#endif
diff --git a/mcs/class/System.XML/Test/System.Xml/XmlUrlResolverTests.cs b/mcs/class/System.XML/Test/System.Xml/XmlUrlResolverTests.cs
index 17e94fc1567..59752547bc0 100644
--- a/mcs/class/System.XML/Test/System.Xml/XmlUrlResolverTests.cs
+++ b/mcs/class/System.XML/Test/System.Xml/XmlUrlResolverTests.cs
@@ -104,19 +104,17 @@ namespace MonoTests.System.Xml
 

 #if NET_4_5

 		[Test]

-		[Category("Async")]

 		public void TestAsync ()

 		{

 			var loc = Assembly.GetExecutingAssembly ().Location;

 			Uri resolved = resolver.ResolveUri (null, loc);

 			Assert.AreEqual ("file", resolved.Scheme);

 			var task = resolver.GetEntityAsync (resolved, null, typeof (Stream));

-			Assert.That (task.Wait (3000));

-			Assert.IsInstanceOfType (typeof (Stream), task.Result);

+			Assert.IsTrue (task.Wait (3000));

+			Assert.IsTrue (task.Result is Stream);

 		}

 

 		[Test]

-		[Category("Async")]

 		public void TestAsyncError ()

 		{

 			var loc = Assembly.GetExecutingAssembly ().Location;

@@ -129,7 +127,7 @@ namespace MonoTests.System.Xml
 			} catch (Exception ex) {

 				if (ex is AggregateException)

 					ex = ((AggregateException) ex).InnerException;

-				Assert.IsInstanceOfType (typeof (XmlException), ex);

+				Assert.IsTrue (ex is XmlException);

 			}

 		}

 #endif

diff --git a/mcs/class/System.XML/Test/System.Xml/XmlWriterSettingsTests.cs b/mcs/class/System.XML/Test/System.Xml/XmlWriterSettingsTests.cs
index 6ade78b4461..bd5cb6af26f 100644
--- a/mcs/class/System.XML/Test/System.Xml/XmlWriterSettingsTests.cs
+++ b/mcs/class/System.XML/Test/System.Xml/XmlWriterSettingsTests.cs
@@ -47,6 +47,7 @@ namespace MonoTests.System.Xml
 		}
 
 		[Test]
+		[Category ("MobileNotWorking")]
 		public void EncodingTest ()
 		{
 			// For Stream it makes sense
diff --git a/mcs/class/System.Xml.Linq/Test/System.Xml.Linq/XAttributeTest.cs b/mcs/class/System.Xml.Linq/Test/System.Xml.Linq/XAttributeTest.cs
index 15bad621e9c..7d1e8302b68 100644
--- a/mcs/class/System.Xml.Linq/Test/System.Xml.Linq/XAttributeTest.cs
+++ b/mcs/class/System.Xml.Linq/Test/System.Xml.Linq/XAttributeTest.cs
@@ -451,7 +451,7 @@ namespace MonoTests.System.Xml.Linq
 			Assert.IsNotNull ((double?) new XAttribute (m), "m:double?:null");
 			Assert.AreEqual (double.NegativeInfinity, ((double?) new XAttribute (m)).Value, "m:double?:value");
 			Assert.IsNotNull ((double?) new XAttribute (n), "n:double?:null");
-			Assert.IsNaN (((double?) new XAttribute (n)).Value, "n:double?:value");
+			Assert.AreEqual (double.NaN, ((double?) new XAttribute (n)).Value, "n:double?:value");
 			Assert.IsNotNull ((float?) new XAttribute (a), "a:float?:null");
 			Assert.AreEqual (7f, ((float?) new XAttribute (a)).Value, "a:float?:value");
 			Assert.IsNotNull ((float?) new XAttribute (b), "b:float?:null");
@@ -473,7 +473,7 @@ namespace MonoTests.System.Xml.Linq
 			Assert.IsNotNull ((float?) new XAttribute (m), "m:float?:null");
 			Assert.AreEqual (float.NegativeInfinity, ((float?) new XAttribute (m)).Value, "m:float?:value");
 			Assert.IsNotNull ((float?) new XAttribute (n), "n:float?:null");
-			Assert.IsNaN (((float?) new XAttribute (n)).Value, "n:float?:value");
+			Assert.AreEqual (float.NaN, ((float?) new XAttribute (n)).Value, "n:float?:value");
 			AssertThrows<FormatException> (() => { Guid? z = (Guid?) new XAttribute (a); }, "a:Guid?");
 			AssertThrows<FormatException> (() => { Guid? z = (Guid?) new XAttribute (b); }, "b:Guid?");
 			AssertThrows<FormatException> (() => { Guid? z = (Guid?) new XAttribute (c); }, "c:Guid?");
@@ -629,7 +629,7 @@ namespace MonoTests.System.Xml.Linq
 			Assert.AreEqual (double.PositiveInfinity, (double) new XAttribute (i), "i:double");
 			Assert.AreEqual (double.NegativeInfinity, (double) new XAttribute (M), "M:double");
 			Assert.AreEqual (double.NegativeInfinity, (double) new XAttribute (m), "m:double");
-			Assert.IsNaN (((double) new XAttribute (n)), "n:double");
+			Assert.AreEqual (double.NaN, ((double) new XAttribute (n)), "n:double");
 			Assert.AreEqual (7f, (float) new XAttribute (a), "a:float");
 			Assert.AreEqual (42f, (float) new XAttribute (b), "b:float");
 			Assert.AreEqual (123f, (float) new XAttribute (c), "c:float");
@@ -640,7 +640,7 @@ namespace MonoTests.System.Xml.Linq
 			Assert.AreEqual (float.PositiveInfinity, (float) new XAttribute (i), "i:float");
 			Assert.AreEqual (float.NegativeInfinity, (float) new XAttribute (M), "M:float");
 			Assert.AreEqual (float.NegativeInfinity, (float) new XAttribute (m), "m:float");
-			Assert.IsNaN (((float) new XAttribute (n)), "n:float");
+			Assert.AreEqual (float.NaN, ((float) new XAttribute (n)), "n:float");
 			AssertThrows<FormatException> (() => { Guid z = (Guid) new XAttribute (a); }, "a:Guid");
 			AssertThrows<FormatException> (() => { Guid z = (Guid) new XAttribute (b); }, "b:Guid");
 			AssertThrows<FormatException> (() => { Guid z = (Guid) new XAttribute (c); }, "c:Guid");
diff --git a/mcs/class/System.Xml.Linq/Test/System.Xml.Linq/XElementTest.cs b/mcs/class/System.Xml.Linq/Test/System.Xml.Linq/XElementTest.cs
index 59a38543164..5a5f255094c 100644
--- a/mcs/class/System.Xml.Linq/Test/System.Xml.Linq/XElementTest.cs
+++ b/mcs/class/System.Xml.Linq/Test/System.Xml.Linq/XElementTest.cs
@@ -907,7 +907,7 @@ namespace MonoTests.System.Xml.Linq
 			Assert.IsNotNull ((double?) new XElement (m), "m:double?:null");
 			Assert.AreEqual (double.NegativeInfinity, ((double?) new XElement (m)).Value, "m:double?:value");
 			Assert.IsNotNull ((double?) new XElement (n), "n:double?:null");
-			Assert.IsNaN (((double?) new XElement (n)).Value, "n:double?:value");
+			Assert.AreEqual (double.NaN, ((double?) new XElement (n)).Value, "n:double?:value");
 			Assert.IsNotNull ((float?) new XElement (a), "a:float?:null");
 			Assert.AreEqual (7f, ((float?) new XElement (a)).Value, "a:float?:value");
 			Assert.IsNotNull ((float?) new XElement (b), "b:float?:null");
@@ -929,7 +929,7 @@ namespace MonoTests.System.Xml.Linq
 			Assert.IsNotNull ((float?) new XElement (m), "m:float?:null");
 			Assert.AreEqual (float.NegativeInfinity, ((float?) new XElement (m)).Value, "m:float?:value");
 			Assert.IsNotNull ((float?) new XElement (n), "n:float?:null");
-			Assert.IsNaN (((float?) new XElement (n)).Value, "n:float?:value");
+			Assert.AreEqual (float.NaN, ((float?) new XElement (n)).Value, "n:float?:value");
 			AssertThrows<FormatException> (() => { Guid? z = (Guid?) new XElement (a); }, "a:Guid?");
 			AssertThrows<FormatException> (() => { Guid? z = (Guid?) new XElement (b); }, "b:Guid?");
 			AssertThrows<FormatException> (() => { Guid? z = (Guid?) new XElement (c); }, "c:Guid?");
@@ -1085,7 +1085,7 @@ namespace MonoTests.System.Xml.Linq
 			Assert.AreEqual (double.PositiveInfinity, (double) new XElement (i), "i:double");
 			Assert.AreEqual (double.NegativeInfinity, (double) new XElement (M), "M:double");
 			Assert.AreEqual (double.NegativeInfinity, (double) new XElement (m), "m:double");
-			Assert.IsNaN (((double) new XElement (n)), "n:double");
+			Assert.AreEqual (double.NaN, ((double) new XElement (n)), "n:double");
 			Assert.AreEqual (7f, (float) new XElement (a), "a:float");
 			Assert.AreEqual (42f, (float) new XElement (b), "b:float");
 			Assert.AreEqual (13f, (float) new XElement (c), "c:float");
@@ -1096,7 +1096,7 @@ namespace MonoTests.System.Xml.Linq
 			Assert.AreEqual (float.PositiveInfinity, (float) new XElement (i), "i:float");
 			Assert.AreEqual (float.NegativeInfinity, (float) new XElement (M), "M:float");
 			Assert.AreEqual (float.NegativeInfinity, (float) new XElement (m), "m:float");
-			Assert.IsNaN (((float) new XElement (n)), "n:float");
+			Assert.AreEqual (float.NaN, ((float) new XElement (n)), "n:float");
 			AssertThrows<FormatException> (() => { Guid z = (Guid) new XElement (a); }, "a:Guid");
 			AssertThrows<FormatException> (() => { Guid z = (Guid) new XElement (b); }, "b:Guid");
 			AssertThrows<FormatException> (() => { Guid z = (Guid) new XElement (c); }, "c:Guid");
diff --git a/mcs/class/System.Xml.Linq/Test/System.Xml.Schema/ExtensionsTest.cs b/mcs/class/System.Xml.Linq/Test/System.Xml.Schema/ExtensionsTest.cs
index 2ed1b5dedb6..da577e644ef 100644
--- a/mcs/class/System.Xml.Linq/Test/System.Xml.Schema/ExtensionsTest.cs
+++ b/mcs/class/System.Xml.Linq/Test/System.Xml.Schema/ExtensionsTest.cs
@@ -9,6 +9,8 @@
 // (C) Stefan Prutianu
 // 
 
+#if !MOBILE
+
 using NUnit.Framework;
 using System;
 using System.Xml;
@@ -467,3 +469,5 @@ namespace MonoTests.System.Xml.Schema
 
 	}
 }
+
+#endif
\ No newline at end of file
diff --git a/mcs/class/corlib/System.Collections.ObjectModel/ReadOnlyDictionary.cs b/mcs/class/corlib/System.Collections.ObjectModel/ReadOnlyDictionary.cs
new file mode 100644
index 00000000000..a012b56dd06
--- /dev/null
+++ b/mcs/class/corlib/System.Collections.ObjectModel/ReadOnlyDictionary.cs
@@ -0,0 +1,441 @@
+//
+// ReadOnlyDictionary.cs
+//
+// Authors:
+//       Martin Baulig <martin.baulig@xamarin.com>
+//       Marek Safar (marek.safar@gmail.com)
+//
+// Copyright (c) 2013 Xamarin Inc. (http://www.xamarin.com)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#if NET_4_5
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+
+namespace System.Collections.ObjectModel {
+
+	[Serializable]
+	[DebuggerDisplay ("Count={Count}")]
+	[DebuggerTypeProxy (typeof (CollectionDebuggerView<,>))]
+	public class ReadOnlyDictionary<TKey, TValue> : IDictionary<TKey, TValue>, IDictionary,
+		IReadOnlyDictionary<TKey, TValue>
+	{
+		readonly IDictionary<TKey, TValue> inner;
+
+		public ReadOnlyDictionary (IDictionary<TKey, TValue> dictionary)
+		{
+			if (dictionary == null)
+				throw new ArgumentNullException ("dictionary");
+
+			this.inner = dictionary;
+		}
+
+		protected IDictionary<TKey, TValue> Dictionary {
+			get {
+				return inner;
+			}
+		}
+
+		public bool ContainsKey (TKey key)
+		{
+			return inner.ContainsKey (key);
+		}
+
+		public bool TryGetValue (TKey key, out TValue value)
+		{
+			return inner.TryGetValue (key, out value);
+		}
+
+		public TValue this [TKey key] {
+			get {
+				return inner [key];
+			}
+		}
+
+		public KeyCollection Keys {
+			get {
+				return new KeyCollection (inner.Keys);
+			}
+		}
+
+		public ValueCollection Values {
+			get {
+				return new ValueCollection (inner.Values);
+			}
+		}
+
+		#region IEnumerable<KeyValuePair<TKey, TValue>> implementation
+		public IEnumerator<KeyValuePair<TKey, TValue>> GetEnumerator ()
+		{
+			return inner.GetEnumerator ();
+		}
+		#endregion
+		#region IEnumerable implementation
+		IEnumerator IEnumerable.GetEnumerator ()
+		{
+			return inner.GetEnumerator ();
+		}
+		#endregion
+
+		#region IDictionary<TKey, TValue> implementation
+
+		void IDictionary<TKey, TValue>.Add (TKey key, TValue value)
+		{
+			throw new NotSupportedException ();
+		}
+
+		bool IDictionary<TKey, TValue>.Remove (TKey key)
+		{
+			throw new NotSupportedException ();
+		}
+
+		TValue IDictionary<TKey, TValue>.this [TKey key] {
+			get {
+				return inner [key];
+			}
+			set {
+				throw new NotSupportedException ();
+			}
+		}
+
+		ICollection<TKey> IDictionary<TKey, TValue>.Keys {
+			get {
+				return Keys;
+			}
+		}
+
+		ICollection<TValue> IDictionary<TKey, TValue>.Values {
+			get {
+				return Values;
+			}
+		}
+
+		#endregion
+
+		#region IDictionary implementation
+
+		void IDictionary.Add (object key, object value)
+		{
+			throw new NotSupportedException ();
+		}
+
+		void IDictionary.Clear ()
+		{
+			throw new NotSupportedException ();
+		}
+
+		bool IDictionary.Contains (object key)
+		{
+			return ((IDictionary)inner).Contains (key);
+		}
+
+		IDictionaryEnumerator IDictionary.GetEnumerator ()
+		{
+			return ((IDictionary)inner).GetEnumerator ();
+		}
+
+		void IDictionary.Remove (object key)
+		{
+			throw new NotSupportedException ();
+		}
+
+		bool IDictionary.IsFixedSize {
+			get {
+				return true;
+			}
+		}
+
+		bool IDictionary.IsReadOnly {
+			get {
+				return true;
+			}
+		}
+
+		object IDictionary.this [object key] {
+			get {
+				return ((IDictionary)inner)[key];
+			}
+			set {
+				throw new NotSupportedException ();
+			}
+		}
+
+		ICollection IDictionary.Keys {
+			get {
+				return Keys;
+			}
+		}
+
+		ICollection IDictionary.Values {
+			get {
+				return Values;
+			}
+		}
+
+		#endregion
+
+		#region ICollection implementation
+
+		void ICollection.CopyTo (Array array, int index)
+		{
+			((ICollection)inner).CopyTo (array, index);
+		}
+
+		#endregion
+
+		#region ICollection<KeyValuePair<TKey, TValue>> implementation
+
+		void ICollection<KeyValuePair<TKey, TValue>>.Add (KeyValuePair<TKey, TValue> item)
+		{
+			throw new NotSupportedException ();
+		}
+
+		void ICollection<KeyValuePair<TKey, TValue>>.Clear ()
+		{
+			throw new NotSupportedException ();
+		}
+
+		bool ICollection<KeyValuePair<TKey, TValue>>.Contains (KeyValuePair<TKey, TValue> item)
+		{
+			return ((ICollection<KeyValuePair<TKey, TValue>>)inner).Contains (item);
+		}
+
+		void ICollection<KeyValuePair<TKey, TValue>>.CopyTo (KeyValuePair<TKey, TValue>[] array, int arrayIndex)
+		{
+			((ICollection<KeyValuePair<TKey, TValue>>)inner).CopyTo (array, arrayIndex);
+		}
+
+		bool ICollection<KeyValuePair<TKey, TValue>>.Remove (KeyValuePair<TKey, TValue> item)
+		{
+			throw new NotSupportedException ();
+		}
+
+		bool ICollection<KeyValuePair<TKey, TValue>>.IsReadOnly {
+			get {
+				return true;
+			}
+		}
+
+		#endregion
+
+		#region ICollection implementation
+
+		public int Count {
+			get {
+				return inner.Count;
+			}
+		}
+
+		bool ICollection.IsSynchronized {
+			get {
+				return false;
+			}
+		}
+
+		object ICollection.SyncRoot {
+			get {
+				throw new NotSupportedException ();
+			}
+		}
+
+		#endregion
+
+		IEnumerable<TKey> IReadOnlyDictionary<TKey, TValue>.Keys {
+			get {
+				return Keys;
+			}
+		}
+
+		IEnumerable<TValue> IReadOnlyDictionary<TKey, TValue>.Values {
+			get {
+				return Values;
+			}
+		}
+
+		[Serializable]
+		[DebuggerDisplay ("Count={Count}")]
+		[DebuggerTypeProxy (typeof (CollectionDebuggerView<,>))]		
+		public sealed class KeyCollection : ICollection<TKey>, IEnumerable<TKey>, ICollection, IEnumerable
+		{
+			readonly ICollection<TKey> collection;
+
+			internal KeyCollection (ICollection<TKey> collection)
+			{
+				this.collection = collection;
+			}
+
+			public void CopyTo (TKey [] array, int arrayIndex)
+			{
+				collection.CopyTo (array, arrayIndex);
+			}
+
+			public IEnumerator<TKey> GetEnumerator ()
+			{
+				return collection.GetEnumerator ();
+			}
+
+			void ICollection<TKey>.Add (TKey item)
+			{
+				throw new NotSupportedException ("this is a read-only collection");
+			}
+
+			void ICollection<TKey>.Clear ()
+			{
+				throw new NotSupportedException ("this is a read-only collection");
+			}
+
+			bool ICollection<TKey>.Contains (TKey item)
+			{
+				return collection.Contains (item);
+			}
+
+			bool ICollection<TKey>.Remove (TKey item)
+			{
+				throw new NotSupportedException ("this is a read-only collection");
+			}
+
+			void ICollection.CopyTo (Array array, int index)
+			{
+				var target = array as TKey [];
+				if (target != null) {
+					CopyTo (target, index);
+					return;
+				}
+
+				throw new NotImplementedException ();
+			}
+
+			IEnumerator IEnumerable.GetEnumerator ()
+			{
+				return collection.GetEnumerator ();
+			}
+
+			public int Count {
+				get {
+					return collection.Count;
+				}
+			}
+
+			bool ICollection<TKey>.IsReadOnly {
+				get {
+					return true;
+				}
+			}
+
+			bool ICollection.IsSynchronized {
+				get {
+					return false;
+				}
+			}
+
+			object ICollection.SyncRoot {
+				get {
+					throw new NotImplementedException ();
+				}
+			}
+		}
+
+		[Serializable]
+		[DebuggerDisplay ("Count={Count}")]
+		[DebuggerTypeProxy (typeof (CollectionDebuggerView<,>))]		
+		public sealed class ValueCollection : ICollection<TValue>, IEnumerable<TValue>, ICollection, IEnumerable
+		{
+			readonly ICollection<TValue> collection;
+
+			internal ValueCollection (ICollection<TValue> collection)
+			{
+				this.collection = collection;
+			}
+
+			public void CopyTo (TValue [] array, int arrayIndex)
+			{
+				collection.CopyTo (array, arrayIndex);
+			}
+
+			public IEnumerator<TValue> GetEnumerator ()
+			{
+				return collection.GetEnumerator ();
+			}
+
+			void ICollection<TValue>.Add (TValue item)
+			{
+				throw new NotSupportedException ("this is a read-only collection");
+			}
+
+			void ICollection<TValue>.Clear ()
+			{
+				throw new NotSupportedException ("this is a read-only collection");
+			}
+
+			bool ICollection<TValue>.Contains (TValue item)
+			{
+				return collection.Contains (item);
+			}
+
+			bool ICollection<TValue>.Remove (TValue item)
+			{
+				throw new NotSupportedException ("this is a read-only collection");
+			}
+
+			void ICollection.CopyTo (Array array, int index)
+			{
+				var target = array as TValue [];
+				if (target != null) {
+					CopyTo (target, index);
+					return;
+				}
+
+				throw new NotImplementedException ();
+			}
+
+			IEnumerator IEnumerable.GetEnumerator ()
+			{
+				return collection.GetEnumerator ();
+			}
+
+			public int Count {
+				get {
+					return collection.Count;
+				}
+			}
+
+			bool ICollection<TValue>.IsReadOnly {
+				get {
+					return true;
+				}
+			}
+
+			bool ICollection.IsSynchronized {
+				get {
+					return false;
+				}
+			}
+
+			object ICollection.SyncRoot {
+				get {
+					throw new NotImplementedException ();
+				}
+			}
+		}
+	}
+}
+#endif
+
diff --git a/mcs/class/corlib/System.IO/Path.cs b/mcs/class/corlib/System.IO/Path.cs
index 95ba4ee3d3e..57c33d3732b 100644
--- a/mcs/class/corlib/System.IO/Path.cs
+++ b/mcs/class/corlib/System.IO/Path.cs
@@ -222,6 +222,8 @@ namespace System.IO {
 
 				if (l >= 2 && DirectorySeparatorChar == '\\' && ret [l - 1] == VolumeSeparatorChar)
 					return ret + DirectorySeparatorChar;
+				else if (l == 1 && DirectorySeparatorChar == '\\' && path.Length >= 2 && path [nLast] == VolumeSeparatorChar)
+					return ret + VolumeSeparatorChar;
 				else {
 					//
 					// Important: do not use CanonicalizePath here, use
diff --git a/mcs/class/corlib/System.Text/Decoder.cs b/mcs/class/corlib/System.Text/Decoder.cs
index fe715c33796..cf2e6f23efc 100644
--- a/mcs/class/corlib/System.Text/Decoder.cs
+++ b/mcs/class/corlib/System.Text/Decoder.cs
@@ -149,7 +149,10 @@ public abstract class Decoder
 		out int bytesUsed, out int charsUsed, out bool completed)
 	{
 		CheckArguments (bytes, byteIndex, byteCount);
-		CheckArguments (chars, charIndex);
+		if (chars == null)
+			throw new ArgumentNullException ("chars");
+		if (charIndex < 0)
+			throw new ArgumentOutOfRangeException ("charIndex");
 		if (charCount < 0 || chars.Length < charIndex + charCount)
 			throw new ArgumentOutOfRangeException ("charCount");
 
@@ -169,7 +172,7 @@ public abstract class Decoder
 	{
 		if (chars == null)
 			throw new ArgumentNullException ("chars");
-		if (charIndex < 0 || chars.Length <= charIndex)
+		if (charIndex < 0 || chars.Length < charIndex)
 			throw new ArgumentOutOfRangeException ("charIndex");
 	}
 
@@ -177,7 +180,7 @@ public abstract class Decoder
 	{
 		if (bytes == null)
 			throw new ArgumentNullException ("bytes");
-		if (byteIndex < 0 || bytes.Length <= byteIndex)
+		if (byteIndex < 0)
 			throw new ArgumentOutOfRangeException ("byteIndex");
 		if (byteCount < 0 || bytes.Length < byteIndex + byteCount)
 			throw new ArgumentOutOfRangeException ("byteCount");
diff --git a/mcs/class/corlib/System.Text/UTF8Encoding.cs b/mcs/class/corlib/System.Text/UTF8Encoding.cs
index fd5e83be04e..bdd80e8a626 100644
--- a/mcs/class/corlib/System.Text/UTF8Encoding.cs
+++ b/mcs/class/corlib/System.Text/UTF8Encoding.cs
@@ -663,7 +663,7 @@ fail_no_space:
 			throw new ArgumentOutOfRangeException ("charIndex", _("ArgRange_Array"));
 		}
 
-		if (charIndex == chars.Length)
+		if (charIndex == chars.Length && byteCount == 0)
 			return 0;
 
 		fixed (char* cptr = chars) {
@@ -688,10 +688,14 @@ fail_no_space:
 		if (leftOverCount == 0) {
 			int end = byteIndex + byteCount;
 			for (; byteIndex < end; posn++, byteIndex++, byteCount--) {
-				if (bytes [byteIndex] < 0x80)
+				if (bytes [byteIndex] < 0x80) {
+					if (posn >= length) {
+						throw new ArgumentException (_("Arg_InsufficientSpace"), "chars");
+					}
 					chars [posn] = (char) bytes [byteIndex];
-				else
+				} else {
 					break;
+				}
 			}
 		}
 
diff --git a/mcs/class/corlib/Test/System.IO/PathTest.cs b/mcs/class/corlib/Test/System.IO/PathTest.cs
index fb53d803b88..77822ac98c4 100644
--- a/mcs/class/corlib/Test/System.IO/PathTest.cs
+++ b/mcs/class/corlib/Test/System.IO/PathTest.cs
@@ -280,6 +280,8 @@ namespace MonoTests.System.IO
 				Assert.AreEqual (@"C:\dir", Path.GetDirectoryName (@"C:\dir\"), "#B5");
 				Assert.AreEqual (@"C:\dir", Path.GetDirectoryName (@"C:\dir\dir"), "#B6");
 				Assert.AreEqual (@"C:\dir\dir", Path.GetDirectoryName (@"C:\dir\dir\"), "#B7");
+				Assert.AreEqual (@"C:", Path.GetDirectoryName (@"C:foo.txt"), "#B8");
+				Assert.AreEqual (@"C:dir", Path.GetDirectoryName (@"C:dir\"), "#B9");
 
 				Assert.AreEqual ("\\foo\\bar", Path.GetDirectoryName ("/foo//bar/dingus"), "#C1");
 				Assert.AreEqual ("foo\\bar", Path.GetDirectoryName ("foo/bar/"), "#C2");
diff --git a/mcs/class/corlib/Test/System.Text/DecoderTest.cs b/mcs/class/corlib/Test/System.Text/DecoderTest.cs
index 3da0846360b..6cf0306d823 100644
--- a/mcs/class/corlib/Test/System.Text/DecoderTest.cs
+++ b/mcs/class/corlib/Test/System.Text/DecoderTest.cs
@@ -98,5 +98,22 @@ namespace MonoTests.System.Text
 			}
 		}
 #endif
+
+		[Test]
+		public void Bug10789 ()
+		{
+			byte[] bytes = new byte[100];
+			char[] chars = new char[100];  
+
+			Decoder conv = Encoding.UTF8.GetDecoder ();
+			int charsUsed, bytesUsed;
+			bool completed;
+			
+			conv.Convert (bytes, 0, 0, chars, 100, 0, false, out bytesUsed, out charsUsed, out completed);
+
+			Assert.IsTrue (completed, "#1");
+			Assert.AreEqual (0, charsUsed, "#2");
+			Assert.AreEqual (0, bytesUsed, "#3");
+		}
 	}
 }
diff --git a/mcs/class/corlib/Test/System.Text/UTF8EncodingTest.cs b/mcs/class/corlib/Test/System.Text/UTF8EncodingTest.cs
index 0b0ae720602..1f53af7e3eb 100644
--- a/mcs/class/corlib/Test/System.Text/UTF8EncodingTest.cs
+++ b/mcs/class/corlib/Test/System.Text/UTF8EncodingTest.cs
@@ -1164,5 +1164,37 @@ namespace MonoTests.System.Text
 			}
 		}
 #endif
+
+		[Test]
+		[ExpectedException (typeof (ArgumentException))]
+		public void Bug10788()
+		{
+			byte[] bytes = new byte[4096];
+			char[] chars = new char[10];
+
+			Encoding.UTF8.GetDecoder ().GetChars (bytes, 0, 4096, chars, 9, false);
+		}
+
+		[Test]
+		public void Bug10789()
+		{
+			byte[] bytes = new byte[4096];
+			char[] chars = new char[10];
+
+			try {
+				Encoding.UTF8.GetDecoder ().GetChars (bytes, 0, 1, chars, 10, false);
+				Assert.Fail ("ArgumentException is expected #1");
+			} catch (ArgumentException) {
+			}
+
+			try {
+				Encoding.UTF8.GetDecoder ().GetChars (bytes, 0, 1, chars, 11, false);
+				Assert.Fail ("ArgumentOutOfRangeException is expected #2");
+			} catch (ArgumentOutOfRangeException) {
+			}
+
+			int charactersWritten = Encoding.UTF8.GetDecoder ().GetChars (bytes, 0, 0, chars, 10, false);
+			Assert.AreEqual (0, charactersWritten, "#3");
+		}
 	}
 }
diff --git a/mcs/class/corlib/corlib.dll.sources b/mcs/class/corlib/corlib.dll.sources
index eafb48667df..4d9560fc138 100644
--- a/mcs/class/corlib/corlib.dll.sources
+++ b/mcs/class/corlib/corlib.dll.sources
@@ -1562,6 +1562,7 @@ System.Collections.Generic/List.cs
 System.Collections.ObjectModel/Collection.cs
 System.Collections.ObjectModel/KeyedCollection.cs
 System.Collections.ObjectModel/ReadOnlyCollection.cs
+System.Collections.ObjectModel/ReadOnlyDictionary.cs
 System/Action.cs
 System/ArraySegment.cs
 System/Comparison.cs
diff --git a/mcs/class/dlr/Runtime/Microsoft.Scripting.Core/Compiler/HoistedLocals.cs b/mcs/class/dlr/Runtime/Microsoft.Scripting.Core/Compiler/HoistedLocals.cs
index b6db15ad2e2..ddb304be986 100644
--- a/mcs/class/dlr/Runtime/Microsoft.Scripting.Core/Compiler/HoistedLocals.cs
+++ b/mcs/class/dlr/Runtime/Microsoft.Scripting.Core/Compiler/HoistedLocals.cs
@@ -64,7 +64,7 @@ namespace System.Linq.Expressions.Compiler {
         internal readonly HoistedLocals Parent;
 
         // A mapping of hoisted variables to their indexes in the array
-        internal readonly ReadOnlyDictionary<Expression, int> Indexes;
+        internal readonly System.Dynamic.Utils.ReadOnlyDictionary<Expression, int> Indexes;
 
         // The variables, in the order they appear in the array
         internal readonly ReadOnlyCollection<ParameterExpression> Variables;
@@ -87,7 +87,7 @@ namespace System.Linq.Expressions.Compiler {
             SelfVariable = Expression.Variable(typeof(object[]), null);
             Parent = parent;
             Variables = vars;
-            Indexes = new ReadOnlyDictionary<Expression, int>(indexes);
+            Indexes = new System.Dynamic.Utils.ReadOnlyDictionary<Expression, int>(indexes);
         }
 
         internal ParameterExpression ParentVariable {