M config.def.h → config.def.h

@@ -12,7 +12,7 @@ #define SELBGCOLOR		"#0066ff"
 #define SELFGCOLOR		"#ffffff"
 
 /* tagging */
-const char *tags[] = { "1", "2", "3", "4", "5", "6", "7", "8", "www", NULL };
+const char *tags[] = { "1", "2", "3", "4", "5", "6", "7", "8", "www" };
 Rule rules[] = {
 	/* class:instance:title regex	tags regex	isfloating */
 	{ "Firefox",			"www",		False },

M dwm.c → dwm.c

@@ -1467,7 +1467,7 @@ keypress(NULL);
 
 	/* init tags */
 	compileregs();
-	for(ntags = 0; tags[ntags]; ntags++);
+	ntags = sizeof tags / sizeof tags[0];
 	seltags = emallocz(sizeof(Bool) * ntags);
 	seltags[0] = True;