Description: Make buffer expandable.
Author: Michael Meskes <meskes@debian.org>

--- bsdmainutils/usr.bin/ul/ul.c	2009-10-16 14:53:16.000000000 +0200
+++ bsdmainutils/usr.bin/ul/ul.c	2009-10-16 14:56:59.000000000 +0200
@@ -82,7 +82,8 @@
 	int	c_width;	/* width or -1 if multi-column char. filler */
 } ;
 
-struct	CHAR	obuf[MAXBUF];
+struct	CHAR	*obuf = NULL;
+int     obuf_size = MAXBUF;
 int	col, maxcol;
 int	mode;
 int	halfpos;
@@ -163,6 +164,19 @@
 }
 
 static void
+expand_obuf()
+{
+        int newsize = obuf_size + MAXBUF;
+        struct CHAR *newbuf = (struct CHAR *)
+                realloc(obuf, newsize*sizeof (struct CHAR));
+        if (newbuf == NULL)
+                err(1, "Expanding output buffer");
+        bzero(&(newbuf[obuf_size]), (newsize-obuf_size) * sizeof(struct CHAR));
+        obuf_size = newsize;
+        obuf = newbuf;
+}
+
+static void
 usage(void)
 {
 	fprintf(stderr, "usage: ul [-i] [-t terminal] [file ...]\n");
@@ -186,6 +200,8 @@
 		col = (col+8) & ~07;
 		if (col > maxcol)
 			maxcol = col;
+		if (col >= obuf_size)
+			expand_obuf();
 		continue;
 
 	case '\r':
@@ -247,6 +263,8 @@
 				obuf[col++].c_mode |= UNDERL | mode;
 			if (col > maxcol)
 				maxcol = col;
+			if (col >= obuf_size)
+                        	expand_obuf();
 			continue;
 		}
 		obuf[col].c_char = '_';
@@ -295,6 +313,8 @@
 		col += w;
 		if (col > maxcol)
 			maxcol = col;
+		if (col >= obuf_size)
+			expand_obuf();
 		continue;
 	}
 	if (ferror(f))
@@ -413,7 +433,11 @@
 initbuf(void)
 {
 
-	bzero((char *)obuf, sizeof (obuf));	/* depends on NORMAL == 0 */
+	if (obuf == NULL)
+		obuf = (struct CHAR *)malloc(obuf_size * sizeof(struct CHAR));
+	if (obuf == NULL)
+		err(1, "Allocating output buffer");
+	bzero((char *)obuf, obuf_size * sizeof (struct CHAR));	/* depends on NORMAL == 0 */
 	col = 0;
 	maxcol = 0;
 	mode &= ALTSET;