This is the patch for removing sprint from the mtx directory. I don't know what this arch is anyway, so I couldn't test it.

The API for fpexcname() needed to be changed to make this work.

Reference: /n/sources/patch/saved/remove-sprint-mtx
Date: Fri Feb 25 22:32:00 CET 2011
Signed-off-by: 20h@r-36.net

--- /sys/src/9/mtx/trap.c	Fri Feb 25 22:29:43 2011
+++ /sys/src/9/mtx/trap.c	Fri Feb 25 22:29:39 2011
@@ -181,7 +181,7 @@
 	"overflow",
 	"invalid operation",
 };
-char	*fpexcname(Ureg*, ulong, char*);
+char	*fpexcname(Ureg*, ulong, char*, int);
 #define FPEXPMASK	0xfff80300		/* Floating exception bits in fpscr */
 
 
@@ -275,7 +275,7 @@
 			s = "undefined program exception";
 		if(user){
 			spllo();
-			sprint(buf, "sys: trap: %s", s);
+			snprint(buf, sizeof(buf), "sys: trap: %s", s);
 			postnote(up, 1, buf, NDebug);
 			break;
 		}
@@ -285,7 +285,7 @@
 	default:
 		if(ecode < nelem(excname) && user){
 			spllo();
-			sprint(buf, "sys: trap: %s", excname[ecode]);
+			snprint(buf, sizeof(buf), "sys: trap: %s", excname[ecode]);
 			postnote(up, 1, buf, NDebug);
 			break;
 		}
@@ -327,7 +327,7 @@
 			dumpregs(ureg);
 			panic("fault: 0x%lux", addr);
 		}
-		sprint(buf, "sys: trap: fault %s addr=0x%lux", read? "read" : "write", addr);
+		snprint(buf, sizeof(buf), "sys: trap: fault %s addr=0x%lux", read? "read" : "write", addr);
 		postnote(up, 1, buf, NDebug);
 	}
 	up->insyscall = insyscall;
@@ -400,7 +400,7 @@
 }
 
 char*
-fpexcname(Ureg *ur, ulong fpscr, char *buf)
+fpexcname(Ureg *ur, ulong fpscr, char *buf, int blen)
 {
 	int i;
 	char *s;
@@ -415,7 +415,7 @@
 			s = fpcause[i];
 	if(s == 0)
 		return "no floating point exception";
-	sprint(buf, "%s fppc=0x%lux", s, fppc);
+	snprint(buf, ml, "%s fppc=0x%lux", s, fppc);
 	return buf;
 }
 
--- /sys/src/9/mtx/main.c	Fri Feb 25 22:29:50 2011
+++ /sys/src/9/mtx/main.c	Fri Feb 25 22:29:46 2011
@@ -391,7 +391,7 @@
 	int i;
 	char cc[KNAMELEN], *p;
 
-	sprint(cc, "%s%d", class, ctlrno);
+	snprint(cc, sizeof(cc), "%s%d", class, ctlrno);
 
 	p = getconf(cc);
 	if(p == 0)
--- /sys/src/9/mtx/devether.c	Fri Feb 25 22:30:00 2011
+++ /sys/src/9/mtx/devether.c	Fri Feb 25 22:29:54 2011
@@ -393,16 +393,16 @@
 			if(ether->irq >= 0)
 				intrenable(ether->irq, ether->interrupt, ether, ether->tbdf, name);
 
-			i = sprint(buf, "#l%d: %s: %dMbps port 0x%luX irq %d",
+			i = snprint(buf, sizeof(buf), "#l%d: %s: %dMbps port 0x%luX irq %d",
 				ctlrno, ether->type, ether->mbps, ether->port, ether->irq);
 			if(ether->mem)
-				i += sprint(buf+i, " addr 0x%luX", PADDR(ether->mem));
+				i += snprint(buf+i, sizeof(buf)-i, " addr 0x%luX", PADDR(ether->mem));
 			if(ether->size)
-				i += sprint(buf+i, " size 0x%luX", ether->size);
-			i += sprint(buf+i, ": %2.2ux%2.2ux%2.2ux%2.2ux%2.2ux%2.2ux",
+				i += snprint(buf+i, sizeof(buf)-i, " size 0x%luX", ether->size);
+			i += snprint(buf+i, sizeof(buf)-i, ": %2.2ux%2.2ux%2.2ux%2.2ux%2.2ux%2.2ux",
 				ether->ea[0], ether->ea[1], ether->ea[2],
 				ether->ea[3], ether->ea[4], ether->ea[5]);
-			sprint(buf+i, "\n");
+			snprint(buf+i, sizeof(buf)-i, "\n");
 			print(buf);
 
 			if(ether->mbps >= 100){
--- /sys/src/9/mtx/devarch.c	Fri Feb 25 22:30:06 2011
+++ /sys/src/9/mtx/devarch.c	Fri Feb 25 22:30:03 2011
@@ -309,7 +309,7 @@
 			continue;
 		if(strcmp(m->tag, "dummy") == 0)
 			break;
-		sprint(buf, "%8lux %8lux %-12.12s\n", m->start, m->end-1, m->tag);
+		snprint(buf, sizeof(buf), "%8lux %8lux %-12.12s\n", m->start, m->end-1, m->tag);
 		memmove(p, buf, Linelen);
 		p += Linelen;
 		n--;