...

compiler/NubType.cs

@@ -102,6 +102,17 @@ public class NubTypeString : NubType
     public override string ToString() => "string";
 }
 
+public class NubTypeChar : NubType
+{
+    public static readonly NubTypeChar Instance = new();
+
+    private NubTypeChar()
+    {
+    }
+
+    public override string ToString() => "char";
+}
+
 public class NubTypeStruct : NubType
 {
     private static readonly Dictionary<(string Module, string Name), NubTypeStruct> Cache = new();
@@ -324,6 +335,10 @@ public class TypeEncoder
                 sb.Append('S');
                 break;
 
+            case NubTypeChar:
+                sb.Append('C');
+                break;
+
             case NubTypePointer p:
                 sb.Append("P(");
                 EncodeType(sb, p.To);
@@ -420,6 +435,7 @@ public class TypeDecoder
             'U' => DecodeUInt(),
             'I' => DecodeSInt(),
             'S' => NubTypeString.Instance,
+            'C' => NubTypeChar.Instance,
             'P' => DecodePointer(),
             'F' => DecodeFunc(),
             'T' => DecodeStruct(),