Revert "Remove not necessary type forwarded from attributes when type comes from mscorlib in netfx" (#19784)

This reverts commit 4fb001d431e0f44df15709f02f776e565fec14c7.

Signed-off-by: dotnet-bot <dotnet-bot@microsoft.com>

src/System.Private.CoreLib/shared/System/AccessViolationException.cs

@@ -17,6 +17,7 @@ using System.Runtime.Serialization;
 namespace System
 {
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public class AccessViolationException : SystemException
     {
         public AccessViolationException()

src/System.Private.CoreLib/shared/System/AggregateException.cs

@@ -22,6 +22,7 @@ namespace System
     /// </remarks>
     [Serializable]
     [DebuggerDisplay("Count = {InnerExceptionCount}")]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public class AggregateException : Exception
     {
         private ReadOnlyCollection<Exception> m_innerExceptions; // Complete set of exceptions. Do not rename (binary serialization)

src/System.Private.CoreLib/shared/System/ApplicationException.cs

@@ -23,6 +23,7 @@ namespace System
     // ApplicationException extends but adds no new functionality to 
     // RecoverableException.
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public class ApplicationException : Exception
     {
         // Creates a new ApplicationException with its message string set to

src/System.Private.CoreLib/shared/System/ArgumentException.cs

@@ -20,6 +20,7 @@ namespace System
     // the contract of the method.  Ideally it should give a meaningful error
     // message describing what was wrong and which parameter is incorrect.
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public class ArgumentException : SystemException
     {
         private string _paramName;

src/System.Private.CoreLib/shared/System/ArgumentNullException.cs

@@ -18,6 +18,7 @@ namespace System
     // The ArgumentException is thrown when an argument 
     // is null when it shouldn't be.
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public class ArgumentNullException : ArgumentException
     {
         // Creates a new ArgumentNullException with its message 

src/System.Private.CoreLib/shared/System/ArgumentOutOfRangeException.cs

@@ -19,6 +19,7 @@ namespace System
     // The ArgumentOutOfRangeException is thrown when an argument 
     // is outside the legal range for that argument.
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public class ArgumentOutOfRangeException : ArgumentException
     {
         private object _actualValue;

src/System.Private.CoreLib/shared/System/ArithmeticException.cs

@@ -18,6 +18,7 @@ namespace System
     // The ArithmeticException is thrown when overflow or underflow
     // occurs.
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public class ArithmeticException : SystemException
     {
         // Creates a new ArithmeticException with its message string set to

src/System.Private.CoreLib/shared/System/ArraySegment.cs

@@ -25,6 +25,7 @@ namespace System
     // three fields from an ArraySegment may not see the same ArraySegment from one call to another
     // (ie, users could assign a new value to the old location).  
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public readonly struct ArraySegment<T> : IList<T>, IReadOnlyList<T>
     {
         // Do not replace the array allocation with Array.Empty. We don't want to have the overhead of

src/System.Private.CoreLib/shared/System/ArrayTypeMismatchException.cs

@@ -18,6 +18,7 @@ namespace System
     // The ArrayMismatchException is thrown when an attempt to store
     // an object of the wrong type within an array occurs.
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public class ArrayTypeMismatchException : SystemException
     {
         // Creates a new ArrayMismatchException with its message string set to

src/System.Private.CoreLib/shared/System/BadImageFormatException.cs

@@ -18,6 +18,7 @@ using System.Runtime.Serialization;
 namespace System
 {
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public partial class BadImageFormatException : SystemException
     {
         private string _fileName;  // The name of the corrupt PE file.

src/System.Private.CoreLib/shared/System/Boolean.cs

@@ -18,6 +18,7 @@ using System.Runtime.Versioning;
 namespace System
 {
     [Serializable]
+    [TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public readonly struct Boolean : IComparable, IConvertible, IComparable<bool>, IEquatable<bool>
     {
         //

src/System.Private.CoreLib/shared/System/Byte.cs

@@ -11,6 +11,7 @@ namespace System
 {
     [Serializable]
     [StructLayout(LayoutKind.Sequential)]
+    [TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public readonly struct Byte : IComparable, IConvertible, IFormattable, IComparable<byte>, IEquatable<byte>, ISpanFormattable
     {
         private readonly byte m_value; // Do not rename (binary serialization)

src/System.Private.CoreLib/shared/System/Char.cs

@@ -20,6 +20,7 @@ namespace System
 {
     [Serializable]
     [StructLayout(LayoutKind.Sequential)]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")] 
     public readonly struct Char : IComparable, IComparable<char>, IEquatable<char>, IConvertible
     {
         //

src/System.Private.CoreLib/shared/System/Collections/Comparer.cs

@@ -14,6 +14,7 @@ using System.Runtime.Serialization;
 namespace System.Collections
 {
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public sealed class Comparer : IComparer, ISerializable
     {
         private CompareInfo _compareInfo;

src/System.Private.CoreLib/shared/System/Collections/DictionaryEntry.cs

@@ -9,6 +9,7 @@ namespace System.Collections
     // A DictionaryEntry holds a key and a value from a dictionary.
     // It is returned by IDictionaryEnumerator::GetEntry().
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public struct DictionaryEntry
     {
         private object _key; // Do not rename (binary serialization)

src/System.Private.CoreLib/shared/System/Collections/Generic/Dictionary.cs

@@ -33,6 +33,7 @@ namespace System.Collections.Generic
     [DebuggerTypeProxy(typeof(IDictionaryDebugView<,>))]
     [DebuggerDisplay("Count = {Count}")]
     [Serializable]
+    [TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public class Dictionary<TKey, TValue> : IDictionary<TKey, TValue>, IDictionary, IReadOnlyDictionary<TKey, TValue>, ISerializable, IDeserializationCallback
     {
         private struct Entry

src/System.Private.CoreLib/shared/System/Collections/Generic/KeyNotFoundException.cs

@@ -8,6 +8,7 @@ using System.Runtime.Serialization;
 namespace System.Collections.Generic
 {
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public class KeyNotFoundException : SystemException
     {
         public KeyNotFoundException()

src/System.Private.CoreLib/shared/System/Collections/Generic/KeyValuePair.cs

@@ -46,6 +46,7 @@ namespace System.Collections.Generic
     // It is used by the IEnumerable<T> implementation for both IDictionary<TKey, TValue>
     // and IReadOnlyDictionary<TKey, TValue>.
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public readonly struct KeyValuePair<TKey, TValue>
     {
         private readonly TKey key; // Do not rename (binary serialization)

src/System.Private.CoreLib/shared/System/Collections/Generic/List.cs

@@ -18,6 +18,7 @@ namespace System.Collections.Generic
     [DebuggerTypeProxy(typeof(ICollectionDebugView<>))]
     [DebuggerDisplay("Count = {Count}")]
     [Serializable]
+    [TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public class List<T> : IList<T>, IList, IReadOnlyList<T>
     {
         private const int DefaultCapacity = 4;

src/System.Private.CoreLib/shared/System/Collections/Hashtable.cs

@@ -1,4 +1,4 @@
-// Licensed to the .NET Foundation under one or more agreements.
+// Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 // See the LICENSE file in the project root for more information.
 
@@ -56,6 +56,7 @@ namespace System.Collections
     [DebuggerTypeProxy(typeof(System.Collections.Hashtable.HashtableDebugView))]
     [DebuggerDisplay("Count = {Count}")]
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public class Hashtable : IDictionary, ISerializable, IDeserializationCallback, ICloneable
     {
         /*

src/System.Private.CoreLib/shared/System/Collections/IHashCodeProvider.cs

@@ -1,4 +1,4 @@
-// Licensed to the .NET Foundation under one or more agreements.
+// Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 // See the LICENSE file in the project root for more information.
 
@@ -9,6 +9,7 @@ namespace System.Collections
     /// GetHashCode() function on Objects, providing their own hash function.
     /// </summary>
     [Obsolete("Please use IEqualityComparer instead.")]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public interface IHashCodeProvider
     {
         /// <summary>Returns a hash code for the given object.</summary>

src/System.Private.CoreLib/shared/System/Collections/ListDictionaryInternal.cs

@@ -19,6 +19,7 @@ namespace System.Collections
     ///    will be smaller and faster than a Hashtable if the number of elements is 10 or less.
     ///    This should not be used if performance is important for large numbers of elements.
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     // Needs to be public to support binary serialization compatibility
     public class ListDictionaryInternal : IDictionary
     {

src/System.Private.CoreLib/shared/System/Collections/ObjectModel/Collection.cs

@@ -10,6 +10,7 @@ namespace System.Collections.ObjectModel
     [Serializable]
     [DebuggerTypeProxy(typeof(ICollectionDebugView<>))]
     [DebuggerDisplay("Count = {Count}")]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public class Collection<T> : IList<T>, IList, IReadOnlyList<T>
     {
         private IList<T> items; // Do not rename (binary serialization)

src/System.Private.CoreLib/shared/System/Collections/ObjectModel/ReadOnlyCollection.cs

@@ -10,6 +10,7 @@ namespace System.Collections.ObjectModel
     [Serializable]
     [DebuggerTypeProxy(typeof(ICollectionDebugView<>))]
     [DebuggerDisplay("Count = {Count}")]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public class ReadOnlyCollection<T> : IList<T>, IList, IReadOnlyList<T>
     {
         private IList<T> list; // Do not rename (binary serialization)

src/System.Private.CoreLib/shared/System/DataMisalignedException.cs

@@ -14,6 +14,7 @@ using System.Runtime.Serialization;
 namespace System
 {
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public sealed class DataMisalignedException : SystemException
     {
         public DataMisalignedException()

src/System.Private.CoreLib/shared/System/DateTime.cs

@@ -52,6 +52,7 @@ namespace System
     // 
     [StructLayout(LayoutKind.Auto)]
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")] 
     public readonly partial struct DateTime : IComparable, IFormattable, IConvertible, IComparable<DateTime>, IEquatable<DateTime>, ISerializable, ISpanFormattable
     {
         // Number of 100ns ticks per time unit

src/System.Private.CoreLib/shared/System/DateTimeOffset.cs

@@ -30,6 +30,7 @@ namespace System
 
     [StructLayout(LayoutKind.Auto)]
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")] 
     public readonly struct DateTimeOffset : IComparable, IFormattable, IComparable<DateTimeOffset>, IEquatable<DateTimeOffset>, ISerializable, IDeserializationCallback, ISpanFormattable
     {
         // Constants

src/System.Private.CoreLib/shared/System/Decimal.cs

@@ -55,6 +55,7 @@ namespace System
     [StructLayout(LayoutKind.Sequential)]
     [Serializable]
     [System.Runtime.Versioning.NonVersionable] // This only applies to field layout
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public readonly partial struct Decimal : IFormattable, IComparable, IConvertible, IComparable<decimal>, IEquatable<decimal>, IDeserializationCallback, ISpanFormattable
     {
         // Sign mask for the flags field. A value of zero in this bit indicates a

src/System.Private.CoreLib/shared/System/DivideByZeroException.cs

@@ -16,6 +16,7 @@ using System.Runtime.Serialization;
 namespace System
 {
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public class DivideByZeroException : ArithmeticException
     {
         public DivideByZeroException()

src/System.Private.CoreLib/shared/System/DllNotFoundException.cs

@@ -17,6 +17,7 @@ using System.Runtime.Serialization;
 namespace System
 {
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public class DllNotFoundException : TypeLoadException
     {
         public DllNotFoundException()

src/System.Private.CoreLib/shared/System/Double.cs

@@ -23,6 +23,7 @@ namespace System
 {
     [Serializable]
     [StructLayout(LayoutKind.Sequential)]
+    [TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public readonly struct Double : IComparable, IConvertible, IFormattable, IComparable<double>, IEquatable<double>, ISpanFormattable
     {
         private readonly double m_value; // Do not rename (binary serialization)

src/System.Private.CoreLib/shared/System/DuplicateWaitObjectException.cs

@@ -18,6 +18,7 @@ namespace System
     // The DuplicateWaitObjectException is thrown when an object 
     // appears more than once in the list of objects to WaitAll or WaitAny.
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public class DuplicateWaitObjectException : ArgumentException
     {
         private static volatile string s_duplicateWaitObjectMessage = null;

src/System.Private.CoreLib/shared/System/EntryPointNotFoundException.cs

@@ -17,6 +17,7 @@ using System.Runtime.Serialization;
 namespace System
 {
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public class EntryPointNotFoundException : TypeLoadException
     {
         public EntryPointNotFoundException()

src/System.Private.CoreLib/shared/System/EventArgs.cs

@@ -8,6 +8,7 @@ namespace System
 {
     // The base class for all event classes.
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public class EventArgs
     {
         public static readonly EventArgs Empty = new EventArgs();

src/System.Private.CoreLib/shared/System/ExecutionEngineException.cs

@@ -22,6 +22,7 @@ namespace System
 {
     [Obsolete("This type previously indicated an unspecified fatal error in the runtime. The runtime no longer raises this exception so this type is obsolete.")]
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public sealed class ExecutionEngineException : SystemException
     {
         public ExecutionEngineException()

src/System.Private.CoreLib/shared/System/FieldAccessException.cs

@@ -14,6 +14,7 @@ using System.Runtime.Serialization;
 namespace System
 {
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public class FieldAccessException : MemberAccessException
     {
         public FieldAccessException()

src/System.Private.CoreLib/shared/System/FormatException.cs

@@ -16,6 +16,7 @@ using System.Runtime.Serialization;
 namespace System
 {
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public class FormatException : SystemException
     {
         public FormatException()

src/System.Private.CoreLib/shared/System/Globalization/CompareInfo.cs

@@ -36,6 +36,7 @@ namespace System.Globalization
     }
 
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public partial class CompareInfo : IDeserializationCallback
     {
         // Mask used to check if IndexOf()/LastIndexOf()/IsPrefix()/IsPostfix() has the right flags.

src/System.Private.CoreLib/shared/System/Globalization/CultureNotFoundException.cs

@@ -7,6 +7,7 @@ using System.Runtime.Serialization;
 namespace System.Globalization
 {
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public class CultureNotFoundException : ArgumentException
     {
         private string _invalidCultureName; // unrecognized culture name

src/System.Private.CoreLib/shared/System/Globalization/SortVersion.cs

@@ -5,6 +5,7 @@
 namespace System.Globalization
 {
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public sealed class SortVersion : IEquatable<SortVersion>
     {
         private int m_NlsVersion; // Do not rename (binary serialization)

src/System.Private.CoreLib/shared/System/Guid.cs

@@ -14,6 +14,7 @@ namespace System
     [StructLayout(LayoutKind.Sequential)]
     [Serializable]
     [Runtime.Versioning.NonVersionable] // This only applies to field layout
+    [TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public partial struct Guid : IFormattable, IComparable, IComparable<Guid>, IEquatable<Guid>, ISpanFormattable
     {
         public static readonly Guid Empty = new Guid();

src/System.Private.CoreLib/shared/System/IO/DirectoryNotFoundException.cs

@@ -13,6 +13,7 @@ namespace System.IO
      * and STG_E_PATHNOTFOUND (0x80030003).
      */
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public class DirectoryNotFoundException : IOException
     {
         public DirectoryNotFoundException()

src/System.Private.CoreLib/shared/System/IO/EndOfStreamException.cs

@@ -7,6 +7,7 @@ using System.Runtime.Serialization;
 namespace System.IO
 {
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public class EndOfStreamException : IOException
     {
         public EndOfStreamException()

src/System.Private.CoreLib/shared/System/IO/FileLoadException.cs

@@ -7,6 +7,7 @@ using System.Runtime.Serialization;
 namespace System.IO
 {
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public partial class FileLoadException : IOException
     {
         public FileLoadException()

src/System.Private.CoreLib/shared/System/IO/FileNotFoundException.cs

@@ -8,6 +8,7 @@ namespace System.IO
 {
     // Thrown when trying to access a file that doesn't exist on disk.
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public partial class FileNotFoundException : IOException
     {
         public FileNotFoundException()

src/System.Private.CoreLib/shared/System/IO/IOException.cs

@@ -8,6 +8,7 @@ using System.Runtime.Serialization;
 namespace System.IO
 {
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public class IOException : SystemException
     {
         public IOException()

src/System.Private.CoreLib/shared/System/IO/PathTooLongException.cs

@@ -9,6 +9,7 @@ using System.Runtime.Serialization;
 namespace System.IO
 {
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public class PathTooLongException : IOException
     {
         public PathTooLongException()

src/System.Private.CoreLib/shared/System/IndexOutOfRangeException.cs

@@ -16,6 +16,7 @@ using System.Runtime.Serialization;
 namespace System
 {
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public sealed class IndexOutOfRangeException : SystemException
     {
         public IndexOutOfRangeException()

src/System.Private.CoreLib/shared/System/InsufficientExecutionStackException.cs

@@ -7,6 +7,7 @@ using System.Runtime.Serialization;
 namespace System
 {
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public sealed class InsufficientExecutionStackException : SystemException
     {
         public InsufficientExecutionStackException()

src/System.Private.CoreLib/shared/System/InsufficientMemoryException.cs

@@ -16,6 +16,7 @@ namespace System
     /// want to recover from these errors.
     /// </summary>
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public sealed class InsufficientMemoryException : OutOfMemoryException
     {
         public InsufficientMemoryException() : base(

src/System.Private.CoreLib/shared/System/Int16.cs

@@ -11,6 +11,7 @@ namespace System
 {
     [Serializable]
     [StructLayout(LayoutKind.Sequential)]
+    [TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public readonly struct Int16 : IComparable, IConvertible, IFormattable, IComparable<short>, IEquatable<short>, ISpanFormattable
     {
         private readonly short m_value; // Do not rename (binary serialization)

src/System.Private.CoreLib/shared/System/Int32.cs

@@ -11,6 +11,7 @@ namespace System
 {
     [Serializable]
     [StructLayout(LayoutKind.Sequential)]
+    [TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public readonly struct Int32 : IComparable, IConvertible, IFormattable, IComparable<int>, IEquatable<int>, ISpanFormattable
     {
         private readonly int m_value; // Do not rename (binary serialization)

src/System.Private.CoreLib/shared/System/Int64.cs

@@ -11,6 +11,7 @@ namespace System
 {
     [Serializable]
     [StructLayout(LayoutKind.Sequential)]
+    [TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public readonly struct Int64 : IComparable, IConvertible, IFormattable, IComparable<long>, IEquatable<long>, ISpanFormattable
     {
         private readonly long m_value; // Do not rename (binary serialization)

src/System.Private.CoreLib/shared/System/IntPtr.cs

@@ -16,6 +16,7 @@ using nint = System.Int32;
 namespace System
 {
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public readonly struct IntPtr : IEquatable<IntPtr>, ISerializable
     {
         // WARNING: We allow diagnostic tools to directly inspect this member (_value). 

src/System.Private.CoreLib/shared/System/InvalidCastException.cs

@@ -13,6 +13,7 @@ using System.Runtime.Serialization;
 namespace System
 {
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public class InvalidCastException : SystemException
     {
         public InvalidCastException()

src/System.Private.CoreLib/shared/System/InvalidOperationException.cs

@@ -17,6 +17,7 @@ using System.Runtime.Serialization;
 namespace System
 {
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public class InvalidOperationException : SystemException
     {
         public InvalidOperationException()

src/System.Private.CoreLib/shared/System/InvalidProgramException.cs

@@ -16,6 +16,7 @@ using System.Runtime.Serialization;
 namespace System
 {
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public sealed class InvalidProgramException : SystemException
     {
         public InvalidProgramException()

src/System.Private.CoreLib/shared/System/MemberAccessException.cs

@@ -15,6 +15,7 @@ namespace System
     // The MemberAccessException is thrown when trying to access a class
     // member fails.
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public class MemberAccessException : SystemException
     {
         // Creates a new MemberAccessException with its message string set to

src/System.Private.CoreLib/shared/System/MethodAccessException.cs

@@ -14,6 +14,7 @@ using System.Runtime.Serialization;
 namespace System
 {
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public class MethodAccessException : MemberAccessException
     {
         public MethodAccessException()

src/System.Private.CoreLib/shared/System/MissingFieldException.cs

@@ -7,6 +7,7 @@ using System.Runtime.Serialization;
 namespace System
 {
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public class MissingFieldException : MissingMemberException, ISerializable
     {
         public MissingFieldException()

src/System.Private.CoreLib/shared/System/MissingMemberException.cs

@@ -7,6 +7,7 @@ using System.Runtime.Serialization;
 namespace System
 {
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public partial class MissingMemberException : MemberAccessException
     {
         public MissingMemberException()

src/System.Private.CoreLib/shared/System/MissingMethodException.cs

@@ -16,6 +16,7 @@ using System.Runtime.Serialization;
 namespace System
 {
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public class MissingMethodException : MissingMemberException
     {
         public MissingMethodException()

src/System.Private.CoreLib/shared/System/MulticastNotSupportedException.cs

@@ -12,6 +12,7 @@ using System.Runtime.Serialization;
 namespace System
 {
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public sealed class MulticastNotSupportedException : SystemException
     {
         public MulticastNotSupportedException()

src/System.Private.CoreLib/shared/System/NotFiniteNumberException.cs

@@ -7,6 +7,7 @@ using System.Runtime.Serialization;
 namespace System
 {
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public class NotFiniteNumberException : ArithmeticException
     {
         private double _offendingNumber;

src/System.Private.CoreLib/shared/System/NotImplementedException.cs

@@ -17,6 +17,7 @@ using System.Runtime.Serialization;
 namespace System
 {
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public class NotImplementedException : SystemException
     {
         public NotImplementedException()

src/System.Private.CoreLib/shared/System/NotSupportedException.cs

@@ -16,6 +16,7 @@ using System.Runtime.Serialization;
 namespace System
 {
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public class NotSupportedException : SystemException
     {
         public NotSupportedException()

src/System.Private.CoreLib/shared/System/NullReferenceException.cs

@@ -16,6 +16,7 @@ using System.Runtime.Serialization;
 namespace System
 {
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public class NullReferenceException : SystemException
     {
         public NullReferenceException()

src/System.Private.CoreLib/shared/System/Nullable.cs

@@ -13,6 +13,7 @@ namespace System
     //
     [Serializable]
     [NonVersionable] // This only applies to field layout
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public struct Nullable<T> where T : struct
     {
         private readonly bool hasValue; // Do not rename (binary serialization)

src/System.Private.CoreLib/shared/System/ObjectDisposedException.cs

@@ -12,6 +12,7 @@ namespace System
     ///       disposed.</para>
     /// </devdoc>
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public class ObjectDisposedException : InvalidOperationException
     {
         private string _objectName;

src/System.Private.CoreLib/shared/System/OperationCanceledException.cs

@@ -18,6 +18,7 @@ using System.Threading;
 namespace System
 {
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public class OperationCanceledException : SystemException
     {
         [NonSerialized]

src/System.Private.CoreLib/shared/System/OutOfMemoryException.cs

@@ -10,6 +10,7 @@ namespace System
     /// The exception class for OOM.
     /// </summary>
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public class OutOfMemoryException : SystemException
     {
         public OutOfMemoryException() : base(

src/System.Private.CoreLib/shared/System/OverflowException.cs

@@ -16,6 +16,7 @@ using System.Runtime.Serialization;
 namespace System
 {
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public class OverflowException : ArithmeticException
     {
         public OverflowException()

src/System.Private.CoreLib/shared/System/PlatformNotSupportedException.cs

@@ -16,6 +16,7 @@ using System.Runtime.Serialization;
 namespace System
 {
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public class PlatformNotSupportedException : NotSupportedException
     {
         public PlatformNotSupportedException()

src/System.Private.CoreLib/shared/System/RankException.cs

@@ -17,6 +17,7 @@ using System.Runtime.Serialization;
 namespace System
 {
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public class RankException : SystemException
     {
         public RankException()

src/System.Private.CoreLib/shared/System/Reflection/AmbiguousMatchException.cs

@@ -7,6 +7,7 @@ using System.Runtime.Serialization;
 namespace System.Reflection
 {
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public sealed class AmbiguousMatchException : SystemException
     {
         public AmbiguousMatchException()

src/System.Private.CoreLib/shared/System/Reflection/CustomAttributeFormatException.cs

@@ -7,6 +7,7 @@ using System.Runtime.Serialization;
 namespace System.Reflection
 {
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public class CustomAttributeFormatException : FormatException
     {
         public CustomAttributeFormatException()

src/System.Private.CoreLib/shared/System/Reflection/InvalidFilterCriteriaException.cs

@@ -7,6 +7,7 @@ using System.Runtime.Serialization;
 namespace System.Reflection
 {
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public class InvalidFilterCriteriaException : ApplicationException
     {
         public InvalidFilterCriteriaException()

src/System.Private.CoreLib/shared/System/Reflection/ReflectionTypeLoadException.cs

@@ -8,6 +8,7 @@ using System.Text;
 namespace System.Reflection
 {
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public sealed class ReflectionTypeLoadException : SystemException, ISerializable
     {
         public ReflectionTypeLoadException(Type[] classes, Exception[] exceptions)

src/System.Private.CoreLib/shared/System/Reflection/TargetException.cs

@@ -7,6 +7,7 @@ using System.Runtime.Serialization;
 namespace System.Reflection
 {
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public class TargetException : ApplicationException
     {
         public TargetException()

src/System.Private.CoreLib/shared/System/Reflection/TargetInvocationException.cs

@@ -7,6 +7,7 @@ using System.Runtime.Serialization;
 namespace System.Reflection
 {
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public sealed class TargetInvocationException : ApplicationException
     {
         public TargetInvocationException(Exception inner)

src/System.Private.CoreLib/shared/System/Reflection/TargetParameterCountException.cs

@@ -7,6 +7,7 @@ using System.Runtime.Serialization;
 namespace System.Reflection
 {
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public sealed class TargetParameterCountException : ApplicationException
     {
         public TargetParameterCountException()

src/System.Private.CoreLib/shared/System/Resources/MissingManifestResourceException.cs

@@ -8,6 +8,7 @@ using System.Runtime.Serialization;
 namespace System.Resources
 {
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public class MissingManifestResourceException : SystemException
     {
         public MissingManifestResourceException()

src/System.Private.CoreLib/shared/System/Resources/MissingSatelliteAssemblyException.cs

@@ -21,6 +21,7 @@ using System.Runtime.Serialization;
 namespace System.Resources
 {
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public class MissingSatelliteAssemblyException : SystemException
     {
         private string _cultureName;

src/System.Private.CoreLib/shared/System/Runtime/CompilerServices/RuntimeWrappedException.cs

@@ -10,6 +10,7 @@ namespace System.Runtime.CompilerServices
     /// Exception used to wrap all non-CLS compliant exceptions.
     /// </summary>
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public sealed class RuntimeWrappedException : Exception
     {
         private object _wrappedException; // EE expects this name

src/System.Private.CoreLib/shared/System/Runtime/InteropServices/ExternalException.cs

@@ -21,6 +21,7 @@ namespace System.Runtime.InteropServices
     // Base exception for COM Interop errors &; Structured Exception Handler
     // exceptions.
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public class ExternalException : SystemException
     {
         public ExternalException()

src/System.Private.CoreLib/shared/System/Runtime/InteropServices/MarshalDirectiveException.cs

@@ -18,6 +18,7 @@ using System.Runtime.Serialization;
 namespace System.Runtime.InteropServices
 {
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public class MarshalDirectiveException : SystemException
     {
         public MarshalDirectiveException()

src/System.Private.CoreLib/shared/System/Runtime/Serialization/SerializationException.cs

@@ -7,6 +7,7 @@ using System.Runtime.Serialization;
 namespace System.Runtime.Serialization
 {
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public class SerializationException : SystemException
     {
         private static string s_nullMessage = SR.SerializationException;

src/System.Private.CoreLib/shared/System/SByte.cs

@@ -11,6 +11,7 @@ namespace System
 {
     [Serializable]
     [CLSCompliant(false)]    [StructLayout(LayoutKind.Sequential)]
+    [TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public readonly struct SByte : IComparable, IConvertible, IFormattable, IComparable<sbyte>, IEquatable<sbyte>, ISpanFormattable
     {
         private readonly sbyte m_value; // Do not rename (binary serialization)

src/System.Private.CoreLib/shared/System/Security/CryptographicException.cs

@@ -8,6 +8,7 @@ using System.Runtime.Serialization;
 namespace System.Security.Cryptography
 {
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public class CryptographicException : SystemException
     {
         public CryptographicException()

src/System.Private.CoreLib/shared/System/Security/SecurityException.cs

@@ -8,6 +8,7 @@ using System.Runtime.Serialization;
 namespace System.Security
 {
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public class SecurityException : SystemException
     {
         private const string DemandedName = "Demanded";

src/System.Private.CoreLib/shared/System/Security/VerificationException.cs

@@ -7,6 +7,7 @@ using System.Runtime.Serialization;
 namespace System.Security
 {
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public class VerificationException : SystemException
     {
         public VerificationException()

src/System.Private.CoreLib/shared/System/Single.cs

@@ -22,6 +22,7 @@ namespace System
 {
     [Serializable]
     [StructLayout(LayoutKind.Sequential)]
+    [TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public readonly struct Single : IComparable, IConvertible, IFormattable, IComparable<float>, IEquatable<float>, ISpanFormattable
     {
         private readonly float m_value; // Do not rename (binary serialization)

src/System.Private.CoreLib/shared/System/StackOverflowException.cs

@@ -16,6 +16,7 @@ using System.Runtime.Serialization;
 namespace System
 {
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public sealed class StackOverflowException : SystemException
     {
         public StackOverflowException()

src/System.Private.CoreLib/shared/System/String.cs

@@ -20,6 +20,7 @@ namespace System
     // positions (indices) are zero-based.
 
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public sealed partial class String : IComparable, IEnumerable, IConvertible, IEnumerable<char>, IComparable<string>, IEquatable<string>, ICloneable
     {
         // String constructors

src/System.Private.CoreLib/shared/System/StringComparer.cs

@@ -10,6 +10,7 @@ using System.Runtime.Serialization;
 namespace System
 {
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public abstract class StringComparer : IComparer, IEqualityComparer, IComparer<string>, IEqualityComparer<string>
     {
         private static readonly CultureAwareComparer s_invariantCulture = new CultureAwareComparer(CultureInfo.InvariantCulture, CompareOptions.None);
@@ -170,6 +171,7 @@ namespace System
     }
 
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public sealed class CultureAwareComparer : StringComparer, ISerializable
     {
         private const CompareOptions ValidCompareMaskOffFlags = ~(CompareOptions.IgnoreCase | CompareOptions.IgnoreSymbols | CompareOptions.IgnoreNonSpace | CompareOptions.IgnoreWidth | CompareOptions.IgnoreKanaType | CompareOptions.StringSort);
@@ -251,6 +253,7 @@ namespace System
     }
 
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public class OrdinalComparer : StringComparer 
     {
         private readonly bool _ignoreCase; // Do not rename (binary serialization)

src/System.Private.CoreLib/shared/System/SystemException.cs

@@ -7,6 +7,7 @@ using System.Runtime.Serialization;
 namespace System
 {
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public class SystemException : Exception
     {
         public SystemException()

src/System.Private.CoreLib/shared/System/Text/DecoderExceptionFallback.cs

@@ -100,6 +100,7 @@ namespace System.Text
 
     // Exception for decoding unknown byte sequences.
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public sealed class DecoderFallbackException : ArgumentException
     {
         private byte[] _bytesUnknown = null;

src/System.Private.CoreLib/shared/System/Text/EncoderExceptionFallback.cs

@@ -97,6 +97,7 @@ namespace System.Text
     }
 
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public sealed class EncoderFallbackException : ArgumentException
     {
         private char _charUnknown;

src/System.Private.CoreLib/shared/System/Text/StringBuilder.cs

@@ -26,6 +26,7 @@ namespace System.Text
     // object unless specified otherwise.  This class may be used in conjunction with the String
     // class to carry out modifications upon strings.
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public sealed partial class StringBuilder : ISerializable
     {
         // A StringBuilder is internally represented as a linked list of blocks each of which holds

src/System.Private.CoreLib/shared/System/Threading/AbandonedMutexException.cs

@@ -15,6 +15,7 @@ using System.Runtime.Serialization;
 namespace System.Threading
 {
     [Serializable]
+    [System.Runtime.CompilerServices.TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
     public class AbandonedMutexException : SystemException
     {
         private int _mutexIndex = -1;