diff --git a/src/cmd/5g/list.c b/src/cmd/5g/list.c
index dfe3bcb79cf..19027829cd8 100644
--- a/src/cmd/5g/list.c
+++ b/src/cmd/5g/list.c
@@ -213,7 +213,7 @@ char*	strcond[16] =
 int
 Cconv(Fmt *fp)
 {
-	char s[20];
+	char s[STRINGSZ];
 	int c;
 
 	c = va_arg(fp->args, int);
@@ -233,7 +233,7 @@ int
 Yconv(Fmt *fp)
 {
 	int i, c;
-	char str[100], *p, *a;
+	char str[STRINGSZ], *p, *a;
 
 	a = va_arg(fp->args, char*);
 	p = str;
@@ -278,7 +278,7 @@ int
 Rconv(Fmt *fp)
 {
 	int r;
-	char str[30];
+	char str[STRINGSZ];
 
 	r = va_arg(fp->args, int);
 	snprint(str, sizeof(str), "R%d", r);
diff --git a/src/cmd/6c/list.c b/src/cmd/6c/list.c
index 64afe79fe49..ba517ca0a0e 100644
--- a/src/cmd/6c/list.c
+++ b/src/cmd/6c/list.c
@@ -111,7 +111,7 @@ Aconv(Fmt *fp)
 int
 Dconv(Fmt *fp)
 {
-	char str[40], s[20];
+	char str[STRINGSZ], s[STRINGSZ];
 	Adr *a;
 	int i;
 
@@ -337,7 +337,7 @@ char*	regstr[] =
 int
 Rconv(Fmt *fp)
 {
-	char str[20];
+	char str[STRINGSZ];
 	int r;
 
 	r = va_arg(fp->args, int);
@@ -353,7 +353,7 @@ int
 Sconv(Fmt *fp)
 {
 	int i, c;
-	char str[100], *p, *a;
+	char str[STRINGSZ], *p, *a;
 
 	a = va_arg(fp->args, char*);
 	p = str;
diff --git a/src/cmd/6g/list.c b/src/cmd/6g/list.c
index eadd7481bc2..9194b1dab22 100644
--- a/src/cmd/6g/list.c
+++ b/src/cmd/6g/list.c
@@ -73,7 +73,7 @@ Pconv(Fmt *fp)
 int
 Dconv(Fmt *fp)
 {
-	char str[100], s[100];
+	char str[STRINGSZ], s[STRINGSZ];
 	Addr *a;
 	int i;
 	uint32 d1, d2;
@@ -313,7 +313,7 @@ int
 Yconv(Fmt *fp)
 {
 	int i, c;
-	char str[100], *p, *a;
+	char str[STRINGSZ], *p, *a;
 
 	a = va_arg(fp->args, char*);
 	p = str;
diff --git a/src/cmd/6l/list.c b/src/cmd/6l/list.c
index ecb189b83a5..195e11d1dec 100644
--- a/src/cmd/6l/list.c
+++ b/src/cmd/6l/list.c
@@ -96,7 +96,7 @@ Aconv(Fmt *fp)
 int
 Dconv(Fmt *fp)
 {
-	char str[40], s[20];
+	char str[STRINGSZ], s[STRINGSZ];
 	Adr *a;
 	int i;
 
@@ -345,7 +345,7 @@ char*	regstr[] =
 int
 Rconv(Fmt *fp)
 {
-	char str[20];
+	char str[STRINGSZ];
 	int r;
 
 	r = va_arg(fp->args, int);
@@ -361,7 +361,7 @@ int
 Sconv(Fmt *fp)
 {
 	int i, c;
-	char str[100], *p, *a;
+	char str[STRINGSZ], *p, *a;
 
 	a = va_arg(fp->args, char*);
 	p = str;
diff --git a/src/cmd/8c/list.c b/src/cmd/8c/list.c
index 3edaa2e1fba..6caafd258a0 100644
--- a/src/cmd/8c/list.c
+++ b/src/cmd/8c/list.c
@@ -100,7 +100,7 @@ Aconv(Fmt *fp)
 int
 Dconv(Fmt *fp)
 {
-	char str[40], s[20];
+	char str[STRINGSZ], s[STRINGSZ];
 	Adr *a;
 	int i;
 
@@ -258,7 +258,7 @@ char*	regstr[] =
 int
 Rconv(Fmt *fp)
 {
-	char str[20];
+	char str[STRINGSZ];
 	int r;
 
 	r = va_arg(fp->args, int);
@@ -274,7 +274,7 @@ int
 Sconv(Fmt *fp)
 {
 	int i, c;
-	char str[100], *p, *a;
+	char str[STRINGSZ], *p, *a;
 
 	a = va_arg(fp->args, char*);
 	p = str;
diff --git a/src/cmd/8g/list.c b/src/cmd/8g/list.c
index 2a7dc277fd5..9b3622a6de9 100644
--- a/src/cmd/8g/list.c
+++ b/src/cmd/8g/list.c
@@ -73,7 +73,7 @@ Pconv(Fmt *fp)
 int
 Dconv(Fmt *fp)
 {
-	char str[100], s[100];
+	char str[STRINGSZ], s[STRINGSZ];
 	Addr *a;
 	int i;
 	uint32 d1, d2;
@@ -256,7 +256,7 @@ int
 Yconv(Fmt *fp)
 {
 	int i, c;
-	char str[100], *p, *a;
+	char str[STRINGSZ], *p, *a;
 
 	a = va_arg(fp->args, char*);
 	p = str;
diff --git a/src/cmd/8l/list.c b/src/cmd/8l/list.c
index 8736ac88bf1..a5dbba7f80c 100644
--- a/src/cmd/8l/list.c
+++ b/src/cmd/8l/list.c
@@ -94,7 +94,7 @@ xsymname(Sym *s)
 int
 Dconv(Fmt *fp)
 {
-	char str[200], s[200];
+	char str[STRINGSZ], s[STRINGSZ];
 	Adr *a;
 	int i;
 
@@ -259,7 +259,7 @@ char*	regstr[] =
 int
 Rconv(Fmt *fp)
 {
-	char str[20];
+	char str[STRINGSZ];
 	int r;
 
 	r = va_arg(fp->args, int);
@@ -275,7 +275,7 @@ int
 Sconv(Fmt *fp)
 {
 	int i, c;
-	char str[100], *p, *a;
+	char str[STRINGSZ], *p, *a;
 
 	a = va_arg(fp->args, char*);
 	p = str;