diff --git a/library/fsl/fsl_fpc.pas b/library/fsl/fsl_fpc.pas
index 75c17ba78..f9f125f60 100644
--- a/library/fsl/fsl_fpc.pas
+++ b/library/fsl/fsl_fpc.pas
@@ -119,6 +119,7 @@   TSemaphore = class (TEventObject)
 function DeleteDirectory(const DirectoryName: string; OnlyChildren: boolean): boolean;
 procedure FileSetReadOnly(const FileName : String; readOnly : boolean);
 procedure FileSetModified(const FileName : String; dateTime : TDateTime);
+function FileCanBeReadOnly : boolean;
 
 //function ColorToString(Color: TColor): AnsiString;
 
@@ -461,9 +462,7 @@ procedure FileSetReadOnly(const FileName : String; readOnly : boolean);
     raise EFslException.Create('chmod failed');
 {$ENDIF}
 {$IFDEF OSX}
-begin
-  raise EFslException.Create('Not supported');
-end;
+  // nothing
 {$ENDIF}
 end;
 
@@ -472,6 +471,16 @@ procedure FileSetModified(const FileName : String; dateTime : TDateTime);
   FileSetDate(filename, DateTimeToFileDate(dateTIme));
 end;
 
+function FileCanBeReadOnly : boolean;
+begin
+  {$IFDEF OSX}
+  result := false;
+  {$ELSE}
+  result := true;
+  {$ENDIF}
+
+end;
+
 { TShortStringHelper }
 
 function TShortStringHelper.substring(start, stop : integer) : String;
@@ -694,7 +703,7 @@ function TZDecompressionStream.Read(var buffer; count: Longint): Longint;
   begin
     if FZStream.avail_in = 0 then
     begin
-      FZStream.avail_in := FStream.Read(FBuffer, Length(FBuffer));
+      FZStream.avail_in := FStream.Read(FBuffer[0], Length(FBuffer));
 
       if FZStream.avail_in = 0 then
       begin
@@ -757,14 +766,14 @@ function TZDecompressionStream.Seek(const Offset: Int64; Origin: TSeekOrigin): I
     if localOffset > 0 then
     begin
       SetLength(buf, BufSize);
-      for i := 1 to localOffset div BufSize do ReadBuffer(buf, BufSize);
-      ReadBuffer(buf, localOffset mod BufSize);
+      for i := 1 to localOffset div BufSize do ReadBuffer(buf[0], BufSize);
+      ReadBuffer(buf[0], localOffset mod BufSize);
     end;
   end
   else if (Offset = 0) and (Origin = soEnd) then
   begin
     SetLength(buf, BufSize);
-    while Read(buf, BufSize) > 0 do ;
+    while Read(buf[0], BufSize) > 0 do ;
   end
   else
     raise EIOException.Create('Invalid Operation');
@@ -829,6 +838,7 @@ class function TDirectory.GetFiles(const Path: string): TStringDynArray;
           ts.add(fsl_utilities.FilePath([Path, SearchRec.Name]));
       until FindNext(SearchRec) <> 0;
     end;
+    FindClose(SearchRec);
 
     result := ts.ToStringArray;
   finally
@@ -850,6 +860,7 @@ class function TDirectory.GetFiles(const Path, Mask: string): TStringDynArray;
           ts.add(fsl_utilities.FilePath([Path, SearchRec.Name]));
       until FindNext(SearchRec) <> 0;
     end;
+    FindClose(SearchRec);
 
     result := ts.ToStringArray;
   finally
@@ -871,6 +882,7 @@ class function TDirectory.getDirectories(const Path: string): TStringDynArray;
           ts.add(fsl_utilities.FilePath([Path, SearchRec.Name]));
       until FindNext(SearchRec) <> 0;
     end;
+    FindClose(SearchRec);
 
     result := ts.ToStringArray;
   finally
diff --git a/library/fsl/fsl_stream.pas b/library/fsl/fsl_stream.pas
index cb91ead34..c72051c6a 100644
--- a/library/fsl/fsl_stream.pas
+++ b/library/fsl/fsl_stream.pas
@@ -6030,8 +6030,8 @@ function  TTarArchive.FindNext (var DirRec : TTarDirRec) : boolean;
 
   // --- EOF reached?
   Result := FALSE;
-    FStream.ReadBuffer (Rec, RECORDSIZE);
-    if Rec [0] = #0 then EXIT;   // EOF reached
+  FStream.ReadBuffer(Rec[0], RECORDSIZE);
+  if Rec [0] = #0 then EXIT;   // EOF reached
   Result := TRUE;
 
   ClearDirRec (DirRec);
@@ -6140,7 +6140,7 @@ function  TTarArchive.ReadFile : TBytes;
   if FBytesToGo = 0 then EXIT;
   RestBytes := Records (FBytesToGo) * RECORDSIZE - FBytesToGo;
   SetLength (Result, FBytesToGo);
-  FStream.ReadBuffer(Result, {$IFNDEF FPC}0, {$ENDIF}FBytesToGo);
+  FStream.ReadBuffer(Result[0], {$IFNDEF FPC}0, {$ENDIF}FBytesToGo);
   FStream.Seek (RestBytes, soFromCurrent);
   FBytesToGo := 0;
 end;
diff --git a/library/fsl/fsl_threads.pas b/library/fsl/fsl_threads.pas
index a894b8f82..519e3fc51 100644
--- a/library/fsl/fsl_threads.pas
+++ b/library/fsl/fsl_threads.pas
@@ -835,7 +835,7 @@ procedure TFslExternalProcessThread.execute;
     FProcess.Execute;
     repeat
       SetLength(Buffer, BUF_SIZE);
-      BytesRead := FProcess.Output.Read(Buffer, BUF_SIZE);
+      BytesRead := FProcess.Output.Read(Buffer[0], BUF_SIZE);
       processOutput(TEncoding.UTF8.GetString(Buffer, 0, BytesRead));
     until BytesRead = 0;
     FExitCode := FProcess.ExitCode;