XKeycodeToKeysym was deprecated on 2011-10-10 [0]. The included patch updates dwm.c to use XkbKeycodeToKeysym instead.
[0] http://cgit.freedesktop.org/xorg/lib/libX11/commit/include/X11?id=f2651e03f3295a453a2965c3749bc8b6e66f1c09 -- James Turner ja...@calminferno.net
diff -r 48309b14abb9 dwm.c --- a/dwm.c Sun Apr 15 11:41:18 2012 +0200 +++ b/dwm.c Tue May 15 21:30:26 2012 -0400 @@ -36,6 +36,7 @@ #include <X11/Xlib.h> #include <X11/Xproto.h> #include <X11/Xutil.h> +#include <X11/XKBlib.h> #ifdef XINERAMA #include <X11/extensions/Xinerama.h> #endif /* XINERAMA */ @@ -1089,7 +1090,7 @@ XKeyEvent *ev; ev = &e->xkey; - keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0); + keysym = XkbKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0, 0); for(i = 0; i < LENGTH(keys); i++) if(keysym == keys[i].keysym && CLEANMASK(keys[i].mod) == CLEANMASK(ev->state)