The was finally applied after 2 years 7 months,
by the new util-linux-ng maintainer.

It fixes a crash for certain $TERM types,
and also fixes alignment of cal -3 output when
"today" is in the last week of the month.

--- cal-2.12q.c	2004-12-05 19:20:36.000000000 +0000
+++ cal.c	2005-04-26 10:28:46.060622765 +0000
@@ -87,9 +87,13 @@
      putp(s);
 }
 
-static char *
+static const char *
 my_tgetstr(char *s, char *ss) {
-     return tigetstr(ss);
+    const char* ret = tigetstr(ss);
+    if (!ret || ret==(char*)-1)
+        return "";
+    else
+        return ret;
 }
 
 #elif defined(HAVE_termcap)
@@ -110,9 +114,13 @@
      tputs (s, 1, putchar);
 }
 
-static char *
+static const char *
 my_tgetstr(char *s, char *ss) {
-     return tgetstr(s, &strbuf);
+    const char* ret = tgetstr(s, &strbuf);
+    if (!ret)
+        return "";
+    else
+        return ret;
 }
 
 #endif
@@ -225,6 +233,7 @@
 char * ascii_day(char *, int);
 void center_str(const char* src, char* dest, size_t dest_size, int width);
 void center(const char *, int, int);
+int strlen_terminal(const char* s);
 void day_array(int, int, int, int *);
 int day_in_week(int, int, int);
 int day_in_year(int, int, int);
@@ -498,10 +507,17 @@
 	for (i = 0; i < 2; i++)
 		printf("%s  %s  %s\n", out_prev.s[i], out_curm.s[i], out_next.s[i]);
 	for (i = 2; i < FMT_ST_LINES; i++) {
+                int width1=width,width2=width,width3=width;
+#if defined(HAVE_ncurses) || defined(HAVE_termcap)
+                /* adjust width to allow for non printable characters */
+                width1+=strlen(out_prev.s[i])-strlen_terminal(out_prev.s[i]);
+                width2+=strlen(out_curm.s[i])-strlen_terminal(out_curm.s[i]);
+                width3+=strlen(out_next.s[i])-strlen_terminal(out_next.s[i]);
+#endif
 		snprintf(lineout, SIZE(lineout), "%-*s  %-*s  %-*s\n",
-		       width, out_prev.s[i],
-		       width, out_curm.s[i],
-		       width, out_next.s[i]);
+		       width1, out_prev.s[i],
+		       width2, out_curm.s[i],
+		       width3, out_next.s[i]);
 #if defined(HAVE_ncurses) || defined(HAVE_termcap)
 		my_putstring(lineout);
 #else
@@ -773,6 +789,15 @@
 		(void)printf("%*s", separate, "");
 }
 
+int
+strlen_terminal(const char* s)
+{
+	if (Senter && Senter[0])
+		if (strstr(s,Senter))
+			return strlen(s) - strlen(Senter) - strlen(Sexit);
+	return strlen(s);
+}
+
 void
 usage()
 {