--- /n/fossil/sys/src/9/bcm/screen.c	Mon Aug  8 19:43:59 2022
+++ /sys/src/9/bcm/screen.c	Thu Dec 22 10:35:23 2022
@@ -508,7 +508,7 @@
 	static int *xp;
 	static int xbuf[256];
 
-	if (xp < xbuf || xp >= &xbuf[sizeof(xbuf)])
+	if (xp < xbuf || xp >= &xbuf[nelem(xbuf)])
 		xp = xbuf;
 
 	switch (buf[0]) {
--- /n/fossil/sys/src/9/omap/screen.c	Wed Oct 27 22:26:00 2010
+++ /sys/src/9/omap/screen.c	Thu Dec 22 10:35:41 2022
@@ -735,7 +735,7 @@
 	static int *xp;
 	static int xbuf[256];
 
-	if (xp < xbuf || xp >= &xbuf[sizeof(xbuf)])
+	if (xp < xbuf || xp >= &xbuf[nelem(xbuf)])
 		xp = xbuf;
 
 	switch (buf[0]) {
--- /n/fossil/sys/src/9/loongson/screen.c	Thu Dec 22 10:42:22 2022
+++ /sys/src/9/loongson/screen.c	Thu Dec 22 10:38:56 2022
@@ -365,7 +365,7 @@
 	static int *xp;
 	static int xbuf[256];
 
-	if (xp < xbuf || xp >= &xbuf[sizeof(xbuf)])
+	if (xp < xbuf || xp >= &xbuf[nelem(xbuf)])
 		xp = xbuf;
 
 	switch (buf[0]) {