X-Git-Url: http://wien.tomnetworks.com/gitweb/?a=blobdiff_plain;f=mcs%2Fclass%2Fcorlib%2FSystem%2FIntPtr.cs;h=c449de83997a3b308b1df8fbe881eb053f166dc3;hb=44bccacc1298ec1c5d6225d560094def47044c4f;hp=e594d49bbb90907f87642d9eaefbc53af8327b71;hpb=93ce056a764e8048f33548a3744ba2bd84072043;p=mono.git

diff --git a/mcs/class/corlib/System/IntPtr.cs b/mcs/class/corlib/System/IntPtr.cs
index e594d49bbb9..c449de83997 100644
--- a/mcs/class/corlib/System/IntPtr.cs
+++ b/mcs/class/corlib/System/IntPtr.cs
@@ -45,6 +45,7 @@
 using System.Globalization;
 using System.Runtime.Serialization;
 using System.Runtime.ConstrainedExecution;
+using System.Diagnostics.Contracts;
 
 namespace System
 {
@@ -223,5 +224,13 @@ namespace System
 		{
 			return (IntPtr) (unchecked (((byte *) pointer) - offset));
 		}
+
+		// fast way to compare IntPtr to (IntPtr)0 while IntPtr.Zero doesn't work due to slow statics access
+		[Pure]
+		[ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)]
+		internal unsafe bool IsNull()
+		{
+			return m_value == null;
+		}
 	}
 }