fix compiler warnings

Author: dirk-thomas

turtlesim/src/turtle_frame.cpp

@@ -77,7 +77,7 @@ TurtleFrame::TurtleFrame(QWidget* parent, Qt::WindowFlags f)
   turtles.append("jade.png");
 
   QString images_path = (ros::package::getPath("turtlesim") + "/images/").c_str();
-  for (size_t i = 0; i < turtles.size(); ++i)
+  for (int i = 0; i < turtles.size(); ++i)
   {
     QImage img;
     img.load(images_path + turtles[i]);
@@ -102,7 +102,7 @@ TurtleFrame::TurtleFrame(QWidget* parent, Qt::WindowFlags f)
   // spawn all available turtle types
   if(FALSE)
   {
-    for(size_t index = 0; index < turtles.size(); index++)
+    for(int index = 0; index < turtles.size(); ++index)
     {
       QString name = turtles[index];
       name = name.split(".").first();
@@ -211,7 +211,7 @@ void TurtleFrame::onUpdate()
   }
 }
 
-void TurtleFrame::paintEvent(QPaintEvent* event)
+void TurtleFrame::paintEvent(QPaintEvent*)
 {
   QPainter painter(this);
 

turtlesim/tutorials/teleop_turtle_key.cpp

@@ -42,6 +42,7 @@ struct termios cooked, raw;
 
 void quit(int sig)
 {
+  (void)sig;
   tcsetattr(kfd, TCSANOW, &cooked);
   ros::shutdown();
   exit(0);