[Mono-bugs] [Bug 77746][Wis] New - StringToCoTaskMemAnsi uses Latin1 rather than UTF-8 encoding

bugzilla-daemon at bugzilla.ximian.com bugzilla-daemon at bugzilla.ximian.com
Thu Mar 9 13:07:22 EST 2006

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Changed by tauberer at for.net.


--- shadow/77746	2006-03-09 13:07:22.000000000 -0500
+++ shadow/77746.tmp.1710	2006-03-09 13:07:22.000000000 -0500
@@ -0,0 +1,39 @@
+Bug#: 77746
+Product: Mono: Class Libraries
+Version: unspecified
+OS Details: 
+Status: NEW   
+Priority: Wishlist
+Component: CORLIB
+AssignedTo: mono-bugs at ximian.com                            
+ReportedBy: tauberer at for.net               
+QAContact: mono-bugs at ximian.com
+TargetMilestone: ---
+Summary: StringToCoTaskMemAnsi uses Latin1 rather than UTF-8 encoding
+System.Runtime.InteropServices.Marshal.StringToCoTaskMemAnsi uses Latin1
+encoding rather than UTF-8.  It should wrap StringToHGlobalAnsi, which does
+the right thing, except that on Windows it should then copy the result into
+a CoTaskMem-allocated buffer.
+Here's a test case.  The first line prints null because the encoding can't
+be undone.  It should print a u-with-umlauts.  The second line prints 0xFC,
+which is the ANSI code for the character.  It should print something else,
+the start of a UTF-8 two-byte encoding of the character.
+using System;
+using System.Runtime.InteropServices;
+public class Test {
+	public static void Main() {
+		string u = ((char)0xFC).ToString();
+		Console.WriteLine(Marshal.PtrToStringAnsi(Marshal.StringToCoTaskMemAnsi(u)));
+	}

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