[Mono-bugs] [Bug 42240][Nor] New - MarshalAs(UnmanagedType.ByValArray) truncates array

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Changed by dave@sanderman.org.

http://bugzilla.ximian.com/show_bug.cgi?id=42240

--- shadow/42240	Thu May  1 21:46:10 2003
+++ shadow/42240.tmp.8886	Thu May  1 21:46:10 2003
@@ -0,0 +1,61 @@
+Bug#: 42240
+Product: Mono/Class Libraries
+Version: unspecified
+OS: Red Hat 8.0
+OS Details: 
+Status: NEW   
+Resolution: 
+Severity: 
+Priority: Normal
+Component: System
+AssignedTo: mono-bugs@ximian.com                            
+ReportedBy: dave@sanderman.org               
+QAContact: mono-bugs@ximian.com
+TargetMilestone: ---
+URL: 
+Cc: 
+Summary: MarshalAs(UnmanagedType.ByValArray) truncates array
+
+Description of Problem:
+
+A class field marked as MarshalAs(UnmanagedType.ByValArray) with a
+SizeConst will end up trimmed of trailing zero bytes.
+
+
+Steps to reproduce the problem:
+
+----------------------
+using System;
+using System.Runtime.InteropServices;
+
+namespace Test
+{
+	public class Test
+	{
+		[StructLayout(LayoutKind.Sequential, Pack=1)]
+		class BugStruct
+		{
+			[MarshalAs(UnmanagedType.ByValArray, SizeConst=8)]
+			public byte[] bogus;
+		}
+		
+		public static unsafe void Main(string[] args)
+		{
+			byte[] data = new byte[] {0,0,0,1,0,0,0,0};
+			fixed (byte *pb = data)
+				{
+				BugStruct bs = (BugStruct)Marshal.PtrToStructure(new IntPtr(pb),
+typeof(BugStruct));
+				Console.WriteLine("bs.bogus.Length is {0}", bs.bogus.Length);
+				}
+		}
+	}
+}
+-------
+
+
+Actual Results:
+on mono 0.23: bs.bogus.Length is 4
+
+Expected Results:
+on msft cli: bs.bogus.Length is 8