diff --git a/components/lazutils/integerlist.pas b/components/lazutils/integerlist.pas
index f244bdba39..c1d9c3ef33 100644
--- a/components/lazutils/integerlist.pas
+++ b/components/lazutils/integerlist.pas
@@ -22,6 +22,16 @@ uses
 
 type
 
+  TByteList = class(specialize TFPGList<Byte>)
+  public
+    procedure Sort; overload;
+  end;
+
+  TCardinalList = class(specialize TFPGList<Cardinal>)
+  public
+    procedure Sort; overload;
+  end;
+
   TIntegerList = class(specialize TFPGList<Integer>)
   public
     procedure Sort; overload;
@@ -35,6 +45,16 @@ type
 
 implementation
 
+function CompareByte(const Item1, Item2: Byte): Integer;
+begin
+  Result := Item1 - Item2;
+end;
+
+function CompareCardinal(const Item1, Item2: Cardinal): Integer;
+begin
+  Result := Item1 - Item2;
+end;
+
 function CompareInteger(const Item1, Item2: Integer): Integer;
 begin
   Result := Item1 - Item2;
@@ -45,6 +65,20 @@ begin
   Result := Item1 - Item2;
 end;
 
+{ TByteList }
+
+procedure TByteList.Sort;
+begin
+  inherited Sort(@CompareByte);
+end;
+
+{ TCardinalList }
+
+procedure TCardinalList.Sort;
+begin
+  inherited Sort(@CompareCardinal);
+end;
+
 { TIntegerList }
 
 procedure TIntegerList.Sort;
diff --git a/components/synedit/synmacrorecorder.pas b/components/synedit/synmacrorecorder.pas
index 045dc853ec..7e9ac7e190 100644
--- a/components/synedit/synmacrorecorder.pas
+++ b/components/synedit/synmacrorecorder.pas
@@ -837,7 +837,7 @@ end;
 
 procedure TCustomSynMacroRecorder.SetAsString(const Value: string);
 var
-  i, p, Cmd : Integer;
+  i, p, Cmd : Longint;
   S : TStrings;
   cmdStr : string;
   iEvent: TSynMacroEvent;
@@ -853,9 +853,10 @@ begin
     begin
       cmdStr := Trim(S[i]);
       p := Pos(' ', cmdStr);
-      if p = 0 then p := Length(cmdStr)+1;
+      if p = 0 then
+        p := Length(cmdStr)+1;
       Cmd := ecNone;
-      if IdentToEditorCommand(Copy(cmdStr, 1, p-1), Longint(Cmd)) then  // D2 needs type-cast
+      if IdentToEditorCommand(Copy(cmdStr, 1, p-1), Cmd) then
       begin
         Delete(cmdStr, 1, p);
         iEvent := CreateMacroEvent(TSynEditorCommand(Cmd));
diff --git a/ide/compiler.pp b/ide/compiler.pp
index 6623454d14..2027f69fe8 100644
--- a/ide/compiler.pp
+++ b/ide/compiler.pp
@@ -1335,7 +1335,7 @@ begin
   MinOrigLine := MaxInt;
   for i := 0 to aStrings.Count-1 do
   begin
-    OriLine := Integer({%H-}PtrUInt(Pointer(aStrings.Objects[i])));
+    OriLine := Integer({%H-}PtrUInt(aStrings.Objects[i]));
     if (OriLine > -1) and (OriLine < MinOrigLine) then
     begin
       MinOrigLine := OriLine;
diff --git a/ide/frames/compiler_messages_options.pas b/ide/frames/compiler_messages_options.pas
index 3f17095e63..3132dc7945 100644
--- a/ide/frames/compiler_messages_options.pas
+++ b/ide/frames/compiler_messages_options.pas
@@ -50,7 +50,7 @@ var
   MsgId: Integer;
 begin
   if (Index < 0) or (Index >= chklistCompMsg.Items.Count) then exit;
-  MsgId:=Integer({%H-}PtrUInt(Pointer(chklistCompMsg.Items.Objects[Index])));
+  MsgId:=Integer({%H-}PtrUInt(chklistCompMsg.Items.Objects[Index]));
   if MsgId<=0 then exit;
   if chklistCompMsg.Checked[Index] then begin
     // show message, this is the default
diff --git a/ide/mouseactiondialog.pas b/ide/mouseactiondialog.pas
index 7bc2b77cdc..3ef17438d6 100644
--- a/ide/mouseactiondialog.pas
+++ b/ide/mouseactiondialog.pas
@@ -215,7 +215,7 @@ var
   i: Integer;
 begin
   OptBox.Items.Clear;
-  ACmd := TSynEditorMouseCommand({%H-}PtrUInt(Pointer(ActionBox.items.Objects[ActionBox.ItemIndex])));
+  ACmd := TSynEditorMouseCommand({%H-}PtrUInt(ActionBox.items.Objects[ActionBox.ItemIndex]));
   if ACmd =  emcSynEditCommand then begin
     OptBox.Enabled := True;
     OptBox.Clear;
@@ -331,7 +331,7 @@ begin
 
   if OptBox.Enabled then begin
     if MAct.Command =  emcSynEditCommand then begin
-      MAct.Option := TSynEditorMouseCommandOpt({%H-}PtrUInt(Pointer(OptBox.Items.Objects[OptBox.ItemIndex])));
+      MAct.Option := TSynEditorMouseCommandOpt({%H-}PtrUInt(OptBox.Items.Objects[OptBox.ItemIndex]));
     end
     else
       MAct.Option := OptBox.ItemIndex;
diff --git a/lcl/include/intfbasewinapi.inc b/lcl/include/intfbasewinapi.inc
index 40e32361d9..2a06a1c319 100644
--- a/lcl/include/intfbasewinapi.inc
+++ b/lcl/include/intfbasewinapi.inc
@@ -423,40 +423,38 @@ var
     Result := (Flags and DT_NoPrefix) = DT_NoPrefix;
   end;
 
-  function Breakable(Breaks : TList; Index : Integer) : Boolean;
+  function Breakable(Breaks : TIntegerList; Index : Integer) : Boolean;
   begin
     If not Assigned(Breaks) then
       exit(false);
-    Result := Breaks.IndexOf(Pointer(PtrInt(Index))) <> -1;
+    Result := Breaks.IndexOf(Index) <> -1;
   end;
 
-  function NextBreakable(Breaks : TList; Index : Integer) : Integer;
+  function NextBreakable(Breaks : TIntegerList; Index : Integer) : Integer;
   begin
     Result := -1;
-    If (not Assigned(Breaks)) or
-      (not Breakable(Breaks,Index))
-    then
+    If (not Assigned(Breaks)) or (not Breakable(Breaks,Index)) then
       exit;
-    If Breaks.IndexOf(Pointer(PtrInt(Index))) >= Breaks.Count - 1 then
+    If Breaks.IndexOf(Index) >= Breaks.Count - 1 then
       exit;
-    Result := integer(PtrUInt(Breaks[Breaks.IndexOf(Pointer(PtrInt(Index))) + 1]));
+    Result := Breaks[Breaks.IndexOf(Index) + 1];
   end;
 
-  function GetBreakablePoints(const Source : String) : TList;
+  function GetBreakablePoints(const Source : String) : TIntegerList;
   var
     I : Integer;
   begin
-    Result := TList.Create;
-    If Length(Source) < 1 then
+    Result := TIntegerList.Create;
+    If Source = '' then
       exit;
     For I := 1 to Length(Source) do
       If Source[I] = ' ' then
         If not Breakable(Result, I) then
-          Result.Add(Pointer(PtrInt(I)));
+          Result.Add(I);
     If not Breakable(Result, Length(Source)) then
-      Result.Add(Pointer(PtrInt(Length(Source))));
+      Result.Add(Length(Source));
     If not Breakable(Result, 0) then
-      Result.Insert(0,nil);
+      Result.Insert(0,-1);
   end;
 
   function TextExtent(Handle : hDC; const Source : String) : TSize;
@@ -495,7 +493,7 @@ var
   function BreakString(const Source : String) : TStrings;
   var
     I, FromPos, ToPos : Integer;
-    Breaks : TList;
+    Breaks : TIntegerList;
   begin
     Result := TStringList.Create;
     Breaks := GetBreakablePoints(Source);
diff --git a/lcl/interfacebase.pp b/lcl/interfacebase.pp
index 9f7a7a5006..c15f6002ef 100644
--- a/lcl/interfacebase.pp
+++ b/lcl/interfacebase.pp
@@ -29,7 +29,7 @@ interface
 uses
   Types, Classes, SysUtils, Math, FPImage,
   // LazUtils
-  LazUTF8,
+  LazUTF8, IntegerList,
   // LCL
   LCLType, LCLProc, LMessages, LCLPlatformDef,
   GraphType, GraphMath, IntfGraphics, Themes;
diff --git a/lcl/interfaces/gtk2/gtk2int.pas b/lcl/interfaces/gtk2/gtk2int.pas
index 30e6ab62c9..c33c0ca355 100644
--- a/lcl/interfaces/gtk2/gtk2int.pas
+++ b/lcl/interfaces/gtk2/gtk2int.pas
@@ -39,7 +39,7 @@ uses
   {$EndIf}
   gdk2pixbuf, gtk2, gdk2, glib2, Pango,
   // LazUtils
-  LazFileUtils, LazUTF8, DynHashArray, Maps,
+  LazFileUtils, LazUTF8, DynHashArray, Maps, IntegerList,
   // LCL
   Dialogs, Controls, Forms, LCLStrConsts,
   LMessages, LCLProc, LCLIntf, LCLType, GraphType, GraphMath,
diff --git a/lcl/interfaces/gtk2/gtk2widgetset.inc b/lcl/interfaces/gtk2/gtk2widgetset.inc
index cd8501c911..f9d7384327 100644
--- a/lcl/interfaces/gtk2/gtk2widgetset.inc
+++ b/lcl/interfaces/gtk2/gtk2widgetset.inc
@@ -6304,7 +6304,7 @@ var
   end;
 
 var
-  LinesList: TFPList;
+  LinesList: TIntegerList;
   LineStart, LineEnd, LineLen: integer;
   ArraySize, TotalSize: integer;
   i: integer;
@@ -6317,15 +6317,15 @@ begin
     exit;
   end;
   InitFont;
-  LinesList:=TFPList.Create;
+  LinesList:=TIntegerList.Create;
   LineStart:=0;
 
   // find all line starts and line ends
   repeat
-    LinesList.Add({%H-}Pointer(PtrInt(LineStart)));
+    LinesList.Add(LineStart);
     // find line end
     LineEnd:=FindLineEnd(LineStart);
-    LinesList.Add({%H-}Pointer(PtrInt(LineEnd)));
+    LinesList.Add(LineEnd);
     // find next line start
     LineStart:=LineEnd;
     if AText[LineStart] in [#10,#13] then begin
@@ -6348,7 +6348,7 @@ begin
   i:=0;
   while i<LinesList.Count do begin
     // add  LineEnd - LineStart + 1 for the #0
-    LineLen:={%H-}PtrUInt(LinesList[i+1])-{%H-}PtrUInt(LinesList[i])+1;
+    LineLen:=LinesList[i+1]-LinesList[i]+1;
     inc(TotalSize,LineLen);
     inc(i,2);
   end;
@@ -6363,8 +6363,8 @@ begin
     // set the pointer to the start of the current line
     CurLineEntry[i shr 1]:=CurLineStart;
     // copy the line
-    LineStart:=integer({%H-}PtrUInt(LinesList[i]));
-    LineEnd:=integer({%H-}PtrUInt(LinesList[i+1]));
+    LineStart:=LinesList[i];
+    LineEnd:=LinesList[i+1];
     LineLen:=LineEnd-LineStart;
     if LineLen>0 then
       Move(AText[LineStart],CurLineStart^,LineLen);
diff --git a/lcl/interfaces/gtk2/gtk2winapi.inc b/lcl/interfaces/gtk2/gtk2winapi.inc
index fedd69aecf..7cc3025935 100644
--- a/lcl/interfaces/gtk2/gtk2winapi.inc
+++ b/lcl/interfaces/gtk2/gtk2winapi.inc
@@ -3324,7 +3324,8 @@ var
   StylesCount: Integer;
   StylesList: TStringList;
   y: Integer;
-  CharsetList: TFPList;
+  CharsetList: TByteList;
+  CS: Byte;
 
   function Gtk2GetFontFamiliesDefault(var AList: TStringList): Integer;
   var
@@ -3507,11 +3508,12 @@ begin
     FontType := TRUETYPE_FONTTYPE;
     FontList := TStringList.Create;
     StylesList := TStringList.Create;
-    CharsetList := TFPList.Create;
+    CharsetList := TByteList.Create;
     for i := 0 to CharsetEncodingList.Count - 1 do
     begin
-      if CharsetList.IndexOf({%H-}Pointer(PtrUInt(TCharSetEncodingRec(CharsetEncodingList.Items[i]^).CharSet))) = -1 then
-        CharsetList.Add({%H-}Pointer(PtrUInt(TCharSetEncodingRec(CharsetEncodingList.Items[i]^).CharSet)));
+      CS := TCharSetEncodingRec(CharsetEncodingList.Items[i]^).CharSet;
+      if CharsetList.IndexOf(CS) = -1 then
+        CharsetList.Add(CS);
     end;
     try
       if Gtk2GetFontFamilies(FontList, lpLogFont^.lfPitchAndFamily,
@@ -3528,7 +3530,7 @@ begin
           EnumLogFont.elfStyle := AStyle;
 
           if CharSetList.Count > 0 then
-            EnumLogFont.elfLogFont.lfCharSet := {%H-}PtrUInt(CharsetList.Items[0]);
+            EnumLogFont.elfLogFont.lfCharSet := CharsetList.Items[0];
 
           Result := Callback(EnumLogFont, Metric, FontType, LParam);
           for y := 1 to StylesCount - 1 do
@@ -3539,7 +3541,7 @@ begin
           end;
           for y := 1 to CharSetList.Count - 1 do
           begin
-            EnumLogFont.elfLogFont.lfCharSet := {%H-}PtrUInt(CharsetList.Items[y]);
+            EnumLogFont.elfLogFont.lfCharSet := CharsetList.Items[y];
             Result := Callback(EnumLogFont, Metric, FontType, LParam);
           end;
         end;
diff --git a/lcl/interfaces/gtk3/gtk3int.pas b/lcl/interfaces/gtk3/gtk3int.pas
index 2c490e451d..fd911f91a2 100644
--- a/lcl/interfaces/gtk3/gtk3int.pas
+++ b/lcl/interfaces/gtk3/gtk3int.pas
@@ -26,7 +26,7 @@ uses
   {$ENDIF}
   SysUtils, Classes, types,
   // LazUtils
-  LazUTF8, Translations,
+  LazUTF8, Translations, IntegerList,
   // LCL
   LCLPlatformDef, InterfaceBase, LCLProc, LCLStrConsts, LCLType, LMessages,
   Controls, Forms, FPImage, Graphics, GraphUtil, GraphType, IntfGraphics,
diff --git a/lcl/interfaces/gtk3/gtk3objects.pas b/lcl/interfaces/gtk3/gtk3objects.pas
index 3cdd352548..4ff378179f 100644
--- a/lcl/interfaces/gtk3/gtk3objects.pas
+++ b/lcl/interfaces/gtk3/gtk3objects.pas
@@ -21,7 +21,7 @@ unit gtk3objects;
 interface
 
 uses
-  Classes, SysUtils, Graphics, types, LCLType, LCLProc, LazUTF8,
+  Classes, SysUtils, Graphics, types, LCLType, LCLProc, LazUTF8, IntegerList,
   LazGtk3, LazGdk3, LazGObject2, LazPango1, LazPangoCairo1, LazGdkPixbuf2,
   LazGLib2, LazCairo1, FPCanvas;
 
@@ -2057,7 +2057,7 @@ var
   end;
 
 var
-  LinesList: TFPList;
+  LinesList: TIntegerList;
   LineStart, LineEnd, LineLen: integer;
   ArraySize, TotalSize: integer;
   i: integer;
@@ -2071,15 +2071,15 @@ begin
     exit;
   end;
   InitFont;
-  LinesList:=TFPList.Create;
+  LinesList:=TIntegerList.Create;
   LineStart:=0;
 
   // find all line starts and line ends
   repeat
-    LinesList.Add({%H-}Pointer(PtrInt(LineStart)));
+    LinesList.Add(LineStart);
     // find line end
     LineEnd:=FindLineEnd(LineStart);
-    LinesList.Add({%H-}Pointer(PtrInt(LineEnd)));
+    LinesList.Add(LineEnd);
     // find next line start
     LineStart:=LineEnd;
     if AText[LineStart] in [#10,#13] then
@@ -2106,7 +2106,7 @@ begin
   while i<LinesList.Count do
   begin
     // add  LineEnd - LineStart + 1 for the #0
-    LineLen:={%H-}PtrUInt(LinesList[i+1])-{%H-}PtrUInt(LinesList[i])+1;
+    LineLen:=LinesList[i+1]-LinesList[i]+1;
     inc(TotalSize,LineLen);
     inc(i,2);
   end;
@@ -2122,8 +2122,8 @@ begin
     // set the pointer to the start of the current line
     CurLineEntry[i shr 1]:=CurLineStart;
     // copy the line
-    LineStart:=integer({%H-}PtrUInt(LinesList[i]));
-    LineEnd:=integer({%H-}PtrUInt(LinesList[i+1]));
+    LineStart:=LinesList[i];
+    LineEnd:=LinesList[i+1];
     LineLen:=LineEnd-LineStart;
     if LineLen>0 then
       Move(AText[LineStart],CurLineStart^,LineLen);
diff --git a/lcl/interfaces/gtk3/gtk3winapi.inc b/lcl/interfaces/gtk3/gtk3winapi.inc
index b071b95a8a..80c1958c5b 100644
--- a/lcl/interfaces/gtk3/gtk3winapi.inc
+++ b/lcl/interfaces/gtk3/gtk3winapi.inc
@@ -1122,7 +1122,8 @@ var
   StylesCount: Integer;
   StylesList: TStringList;
   y: Integer;
-  CharsetList: TFPList;
+  CharsetList: TByteList;
+  CS: Byte;
 
   function Gtk3GetFontFamiliesDefault(var AList: TStringList): Integer;
   var
@@ -1305,11 +1306,12 @@ begin
     FontType := TRUETYPE_FONTTYPE;
     FontList := TStringList.Create;
     StylesList := TStringList.Create;
-    CharsetList := TFPList.Create;
+    CharsetList := TByteList.Create;
     for i := 0 to CharsetEncodingList.Count - 1 do
     begin
-      if CharsetList.IndexOf({%H-}Pointer(PtrUInt(TCharSetEncodingRec(CharsetEncodingList.Items[i]^).CharSet))) = -1 then
-        CharsetList.Add({%H-}Pointer(PtrUInt(TCharSetEncodingRec(CharsetEncodingList.Items[i]^).CharSet)));
+      CS := TCharSetEncodingRec(CharsetEncodingList.Items[i]^).CharSet;
+      if CharsetList.IndexOf(CS) = -1 then
+        CharsetList.Add(CS);
     end;
     try
       if Gtk3GetFontFamilies(FontList, lpLogFont^.lfPitchAndFamily,
@@ -1321,12 +1323,11 @@ begin
           EnumLogFont.elfLogFont.lfPitchAndFamily := lpLogFont^.lfPitchAndFamily;
           EnumLogFont.elfFullName := FontList[i];
 
-          StylesCount := FillLogFontA(i, EnumLogFont.elfLogFont, Metric, FontType,
-            AStyle);
+          StylesCount := FillLogFontA(i, EnumLogFont.elfLogFont, Metric, FontType, AStyle);
           EnumLogFont.elfStyle := AStyle;
 
           if CharSetList.Count > 0 then
-            EnumLogFont.elfLogFont.lfCharSet := {%H-}PtrUInt(CharsetList.Items[0]);
+            EnumLogFont.elfLogFont.lfCharSet := CharsetList.Items[0];
 
           Result := Callback(EnumLogFont, Metric, FontType, LParam);
           for y := 1 to StylesCount - 1 do
@@ -1337,7 +1338,7 @@ begin
           end;
           for y := 1 to CharSetList.Count - 1 do
           begin
-            EnumLogFont.elfLogFont.lfCharSet := {%H-}PtrUInt(CharsetList.Items[y]);
+            EnumLogFont.elfLogFont.lfCharSet := CharsetList.Items[y];
             Result := Callback(EnumLogFont, Metric, FontType, LParam);
           end;
         end;
diff --git a/tools/iconvtable.pas b/tools/iconvtable.pas
index a07f0a1b23..b6ed008724 100644
--- a/tools/iconvtable.pas
+++ b/tools/iconvtable.pas
@@ -108,17 +108,12 @@ begin
 end;
 
 var
-  i: Integer;
-  Filename1, Filename2: String;
   SL: TStringListUTF8;
-  FromEncoding: String;
-  ToEncoding: String;
+  Filename1, Filename2: String;
+  FromEncoding, ToEncoding: String;
   s: String;
-  UniCode: integer;
-  CharLen: integer;
-  j: Integer;
-  TableIndex: LongInt;
-  k: Integer;
+  UniCode: Cardinal;
+  TableIndex, CharLen, i, j, k: Integer;
 begin
   // single byte to UTF-8
   if ParamCount=0 then
@@ -200,7 +195,7 @@ begin
           ' TableIndex[i]=',TableIndex,
           ' TableIndex[i+j]=',StrToTableIndex(SortedTable[i+j]),
           '');}
-        if integer(UTF8CharacterToUnicode(@SortedTable[i+j][1],CharLen))<>UniCode+j then
+        if UTF8CharacterToUnicode(@SortedTable[i+j][1],CharLen)<>UniCode+j then
           break;
         if StrToTableIndex(SortedTable[i+j])<>TableIndex+j then
           break;