diff --git a/ncurses/base/safe_sprintf.c b/ncurses/base/safe_sprintf.c
new file mode 100644
index 0000000..8fc5d89
--- /dev/null
+++ b/ncurses/base/safe_sprintf.c
@@ -0,0 +1,264 @@
+/****************************************************************************
+ * Copyright (c) 1998-2003,2007 Free Software Foundation, Inc.              *
+ *                                                                          *
+ * Permission is hereby granted, free of charge, to any person obtaining a  *
+ * copy of this software and associated documentation files (the            *
+ * "Software"), to deal in the Software without restriction, including      *
+ * without limitation the rights to use, copy, modify, merge, publish,      *
+ * distribute, distribute with modifications, sublicense, and/or sell       *
+ * copies of the Software, and to permit persons to whom the Software is    *
+ * furnished to do so, subject to the following conditions:                 *
+ *                                                                          *
+ * The above copyright notice and this permission notice shall be included  *
+ * in all copies or substantial portions of the Software.                   *
+ *                                                                          *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
+ * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
+ * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
+ *                                                                          *
+ * Except as contained in this notice, the name(s) of the above copyright   *
+ * holders shall not be used in advertising or otherwise to promote the     *
+ * sale, use or other dealings in this Software without prior written       *
+ * authorization.                                                           *
+ ****************************************************************************/
+
+/****************************************************************************
+ *  Author: Thomas E. Dickey <dickey@clark.net> 1997                        *
+ ****************************************************************************/
+
+#include <curses.priv.h>
+#include <ctype.h>
+
+MODULE_ID("$Id: safe_sprintf.c,v 1.20 2007/04/21 22:28:06 tom Exp $")
+
+#if USE_SAFE_SPRINTF
+
+typedef enum {
+    Flags, Width, Prec, Type, Format
+} PRINTF;
+
+#define VA_INTGR(type) ival = va_arg(ap, type)
+#define VA_FLOAT(type) fval = va_arg(ap, type)
+#define VA_POINT(type) pval = (void *)va_arg(ap, type)
+
+/*
+ * Scan a variable-argument list for printf to determine the number of
+ * characters that would be emitted.
+ */
+static int
+_nc_printf_length(const char *fmt, va_list ap)
+{
+    size_t length = BUFSIZ;
+    char *buffer;
+    char *format;
+    int len = 0;
+    size_t fmt_len;
+    char fmt_arg[BUFSIZ];
+
+    if (fmt == 0 || *fmt == '\0')
+	return 0;
+    fmt_len = strlen(fmt) + 1;
+    if ((format = typeMalloc(char, fmt_len)) == 0)
+	  return -1;
+    if ((buffer = typeMalloc(char, length)) == 0) {
+	free(format);
+	return -1;
+    }
+
+    while (*fmt != '\0') {
+	if (*fmt == '%') {
+	    static char dummy[] = "";
+	    PRINTF state = Flags;
+	    char *pval = dummy;	/* avoid const-cast */
+	    double fval = 0.0;
+	    int done = FALSE;
+	    int ival = 0;
+	    int prec = -1;
+	    int type = 0;
+	    int used = 0;
+	    int width = -1;
+	    size_t f = 0;
+
+	    format[f++] = *fmt;
+	    while (*++fmt != '\0' && len >= 0 && !done) {
+		format[f++] = *fmt;
+
+		if (isdigit(UChar(*fmt))) {
+		    int num = *fmt - '0';
+		    if (state == Flags && num != 0)
+			state = Width;
+		    if (state == Width) {
+			if (width < 0)
+			    width = 0;
+			width = (width * 10) + num;
+		    } else if (state == Prec) {
+			if (prec < 0)
+			    prec = 0;
+			prec = (prec * 10) + num;
+		    }
+		} else if (*fmt == '*') {
+		    VA_INTGR(int);
+		    if (state == Flags)
+			state = Width;
+		    if (state == Width) {
+			width = ival;
+		    } else if (state == Prec) {
+			prec = ival;
+		    }
+		    sprintf(fmt_arg, "%d", ival);
+		    fmt_len += strlen(fmt_arg);
+		    if ((format = realloc(format, fmt_len)) == 0) {
+			return -1;
+		    }
+		    strcpy(&format[--f], fmt_arg);
+		    f = strlen(format);
+		} else if (isalpha(UChar(*fmt))) {
+		    done = TRUE;
+		    switch (*fmt) {
+		    case 'Z':	/* FALLTHRU */
+		    case 'h':	/* FALLTHRU */
+		    case 'l':	/* FALLTHRU */
+			done = FALSE;
+			type = *fmt;
+			break;
+		    case 'i':	/* FALLTHRU */
+		    case 'd':	/* FALLTHRU */
+		    case 'u':	/* FALLTHRU */
+		    case 'x':	/* FALLTHRU */
+		    case 'X':	/* FALLTHRU */
+			if (type == 'l')
+			    VA_INTGR(long);
+			else if (type == 'Z')
+			    VA_INTGR(size_t);
+			else
+			    VA_INTGR(int);
+			used = 'i';
+			break;
+		    case 'f':	/* FALLTHRU */
+		    case 'e':	/* FALLTHRU */
+		    case 'E':	/* FALLTHRU */
+		    case 'g':	/* FALLTHRU */
+		    case 'G':	/* FALLTHRU */
+			VA_FLOAT(double);
+			used = 'f';
+			break;
+		    case 'c':
+			VA_INTGR(int);
+			used = 'i';
+			break;
+		    case 's':
+			VA_POINT(char *);
+			if (prec < 0)
+			    prec = strlen(pval);
+			if (prec > (int) length) {
+			    length = length + prec;
+			    buffer = typeRealloc(char, length, buffer);
+			    if (buffer == 0) {
+				free(format);
+				return -1;
+			    }
+			}
+			used = 'p';
+			break;
+		    case 'p':
+			VA_POINT(void *);
+			used = 'p';
+			break;
+		    case 'n':
+			VA_POINT(int *);
+			used = 0;
+			break;
+		    default:
+			break;
+		    }
+		} else if (*fmt == '.') {
+		    state = Prec;
+		} else if (*fmt == '%') {
+		    done = TRUE;
+		    used = 'p';
+		}
+	    }
+	    format[f] = '\0';
+	    switch (used) {
+	    case 'i':
+		sprintf(buffer, format, ival);
+		break;
+	    case 'f':
+		sprintf(buffer, format, fval);
+		break;
+	    default:
+		sprintf(buffer, format, pval);
+		break;
+	    }
+	    len += (int) strlen(buffer);
+	} else {
+	    fmt++;
+	    len++;
+	}
+    }
+
+    free(buffer);
+    free(format);
+    return len;
+}
+#endif
+
+#define my_buffer _nc_globals.safeprint_buf
+#define my_length _nc_globals.safeprint_used
+
+/*
+ * Wrapper for vsprintf that allocates a buffer big enough to hold the result.
+ */
+NCURSES_EXPORT(char *)
+_nc_printf_string(const char *fmt, va_list ap)
+{
+    char *result = 0;
+
+    if (fmt != 0) {
+#if USE_SAFE_SPRINTF
+	int len = _nc_printf_length(fmt, ap);
+
+	if ((int) my_length < len + 1) {
+	    my_length = 2 * (len + 1);
+	    my_buffer = typeRealloc(char, my_length, my_buffer);
+	}
+	if (my_buffer != 0) {
+	    *my_buffer = '\0';
+	    if (len >= 0) {
+		vsprintf(my_buffer, fmt, ap);
+	    }
+	    result = my_buffer;
+	}
+#else
+#define MyCols _nc_globals.safeprint_cols
+#define MyRows _nc_globals.safeprint_rows
+
+	if (screen_lines > MyRows || screen_columns > MyCols) {
+	    if (screen_lines > MyRows)
+		MyRows = screen_lines;
+	    if (screen_columns > MyCols)
+		MyCols = screen_columns;
+	    my_length = (MyRows * (MyCols + 1)) + 1;
+	    my_buffer = typeRealloc(char, my_length, my_buffer);
+	}
+
+	if (my_buffer != 0) {
+# if HAVE_VSNPRINTF
+	    vsnprintf(my_buffer, my_length, fmt, ap);	/* GNU extension */
+# else
+	    vsprintf(my_buffer, fmt, ap);	/* ANSI */
+# endif
+	    result = my_buffer;
+	}
+#endif
+    } else if (my_buffer != 0) {	/* see _nc_freeall() */
+	free(my_buffer);
+	my_buffer = 0;
+	my_length = 0;
+    }
+    return result;
+}