javac warnings are a lot more obvious with the new build. For the jdk repo then there are currently 3 warnings, all java.awt, when compiling on Linux. There would of course be hundreds of warnings if we compiled the entire jdk repo with -Xlint:all.

Compiling 9907 files for BUILD_JDK
/u/alanb/ws/profiles/jdk/src/share/classes/java/awt/EventDispatchThread.java:123: warning: non-varargs call of varargs method with inexact argument type for last parameter;
                final Method evaluateMethod = Class.forName("sun.lwawt.macosx.EventDispatchAccess").getMethod("evaluate", null);
                                                                                                                          ^
  cast to Class<?> for a varargs call
  cast to Class<?>[] for a non-varargs call and to suppress this warning
/u/alanb/ws/profiles/jdk/src/share/classes/java/awt/EventDispatchThread.java:126: warning: non-varargs call of varargs method with inexact argument type for last parameter;
                        return ((Boolean)evaluateMethod.invoke(cond, null)).booleanValue();
                                                                     ^
  cast to Object for a varargs call
  cast to Object[] for a non-varargs call and to suppress this warning

/u/alanb/ws/profiles/jdk/src/solaris/classes/sun/awt/X11/XIconWindow.java:95: warning: non-varargs call of varargs method with inexact argument type for last parameter;
        log.finest("Icon sizes: {0}", sizeList);
                                      ^
  cast to Object for a varargs call
  cast to Object[] for a non-varargs call and to suppress this warning
Note: Some input files use or override a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
Note: Some input files use unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
3 warnings