diff --git a/SharpLib.csproj b/SharpLib.csproj
index 471b05e..915ccf5 100644
--- a/SharpLib.csproj
+++ b/SharpLib.csproj
@@ -22,7 +22,7 @@
 	</PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.2.0" />
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.3.1" />
     <PackageReference Include="Optional" Version="4.0.0" />
     <PackageReference Include="Optional.Async" Version="1.3.0" />
     <PackageReference Include="System.Collections.Immutable" Version="8.0.0" />
diff --git a/imm/FSM.cs b/imm/FSM.cs
index d392630..0afd7d5 100644
--- a/imm/FSM.cs
+++ b/imm/FSM.cs
@@ -54,7 +54,7 @@ public record class FSM<TSUB, ST, CTX> : imm.Recorded<TSUB>, Imm
 													[CallerMemberName] string memberName = "",
 													[CallerFilePath] string filePath = "",
 													[CallerLineNumber] int lineNumber = 0,
-													[CallerArgumentExpression("fn")]
+													[CallerArgumentExpression("newState")]
 													string expression = default
 	)
 	{
diff --git a/imm/Imm.cs b/imm/Imm.cs
index 5a60dfc..bb75fe8 100644
--- a/imm/Imm.cs
+++ b/imm/Imm.cs
@@ -340,7 +340,7 @@ public record class Timed<T> : Recorded<T>, imm.Imm
 													[CallerMemberName] string dbgName = "",
 													[CallerFilePath] string dbgPath = "",
 													[CallerLineNumber] int dbgLine = 0,
-													[CallerArgumentExpression("next")]
+													[CallerArgumentExpression("fn")]
 													string dbgExp = ""
 													)
 													where U : T
@@ -358,7 +358,7 @@ public record class Timed<T> : Recorded<T>, imm.Imm
 													)
 													=> ProcessWork( fn, reason, dbgName, dbgPath, dbgLine, dbgExp );
 
-	virtual public T ProcessWork( Func<T, T> fn,
+	override public T ProcessWork( Func<T, T> fn,
 													string reason,
 													string dbgName,
 													string dbgPath,
diff --git a/logging/Log.cs b/logging/Log.cs
index 08ad3ab..0365fa8 100644
--- a/logging/Log.cs
+++ b/logging/Log.cs
@@ -45,7 +45,7 @@ public record struct Value<T>( T _val, string _exp = "" )
 	}
 
 	static public Value<U> Get<U>( U v,
-		[CallerArgumentExpression("fn")]
+		[CallerArgumentExpression("v")]
 			string dbgExp = ""
  )
  {
diff --git a/prof/AddressStack.cs b/prof/AddressStack.cs
index c766c9f..3face11 100644
--- a/prof/AddressStack.cs
+++ b/prof/AddressStack.cs
@@ -31,7 +31,9 @@ namespace Tracing
             return true;
         }
 
-        public IReadOnlyList<ulong> Stack => _stack;
+				public override int GetHashCode() => _stack.GetHashCode();
+
+				public IReadOnlyList<ulong> Stack => _stack;
 
         public void AddFrame(ulong address)
         {