--- WINGs/Examples/puzzle.c
+++ WINGs/Examples/puzzle.c
@@ -12,7 +12,7 @@
 
 WMWindow *win;
 WMButton *Button[MAX_SIZE];
-char Map[MAX_SIZE];
+signed char Map[MAX_SIZE];
 int Size = 4;
 int MoveCount;
 
--- WINGs/WINGs/WUtil.h
+++ WINGs/WINGs/WUtil.h
@@ -216,11 +216,11 @@
 /* don't free the returned string */
 char* wstrerror(int errnum);
 
-void wmessage(const char *msg, ...);
-void wwarning(const char *msg, ...);
-void wfatal(const char *msg, ...);
-void wsyserror(const char *msg, ...);
-void wsyserrorwithcode(int error, const char *msg, ...);
+void wmessage(const char *msg, ...) __attribute__((__format__(printf,1,2)));
+void wwarning(const char *msg, ...) __attribute__((__format__(printf,1,2)));
+void wfatal(const char *msg, ...) __attribute__((__format__(printf,1,2)));
+void wsyserror(const char *msg, ...) __attribute__((__format__(printf,1,2)));
+void wsyserrorwithcode(int error, const char *msg, ...) __attribute__((__format__(printf,2,3)));
 
 char* wfindfile(char *paths, char *file);
 
--- WINGs/wcolorpanel.c
+++ WINGs/wcolorpanel.c
@@ -1239,7 +1239,7 @@
     }
 
     if (!(dPtr = opendir(panel->configurationPath))) {
-        wwarning(_("Color Panel: Could not find file"), "%s", panel->configurationPath);
+        wwarning(_("Color Panel: Could not find file: %s"), panel->configurationPath);
         return;
     }
 
@@ -3715,6 +3715,7 @@
         color.red = 0;
         color.green = 0;
         color.blue = 0;
+        color.alpha = 0;
         return color;
     }
 
@@ -3724,6 +3725,7 @@
     color.red   = xcolor->red >> 8;
     color.green = xcolor->green >> 8;
     color.blue  = xcolor->blue >> 8;
+    color.alpha = 0;
 
     wfree(xcolor);
 
--- src/cycling.c
+++ src/cycling.c
@@ -22,6 +22,7 @@
 
 #include "wconfig.h"
 
+#include <stdlib.h>
 #include <X11/Xlib.h>
 #include <X11/Xutil.h>
 #include <X11/keysym.h>
--- src/dock.c
+++ src/dock.c
@@ -3780,7 +3780,7 @@
 
 
     if (wPreferences.flags.noupdates)
-        return;
+        return False;
 
     if (XGrabPointer(dpy, icon->core->window, True, ButtonMotionMask
                      |ButtonReleaseMask|ButtonPressMask, GrabModeAsync,
--- src/texture.c
+++ src/texture.c
@@ -421,6 +421,8 @@
     texture->argc = argc;
     texture->argv = argv;
 
+    memset(&fallbackColor, 0, sizeof(fallbackColor));
+
     fallbackColor.red = 0x8000;
     fallbackColor.green = 0x8000;
     fallbackColor.blue = 0x8000;
--- src/xdnd.c
+++ src/xdnd.c
@@ -185,7 +185,7 @@
         wfree(scr->xdestring); /* this xdestring is not from Xlib (no XFree) */
     }
 
-    /* why doesn't this function return anything ? -Dan */
+    return True;
 }
 
 Bool
--- util/wmsetup.c
+++ util/wmsetup.c
@@ -21,6 +21,7 @@
 int
 main()
 {
+return 0;
 }
 #else
 #define PROG_VERSION "wmsetup 0.0 (Window Maker)"