1 /*
2 * The authors of this software are Rob Pike and Ken Thompson.
3 * Copyright (c) 2002 by Lucent Technologies.
4 * Permission to use, copy, modify, and distribute this software for any
5 * purpose without fee is hereby granted, provided that this entire notice
6 * is included in all copies of any software which is or includes a copy
7 * or modification of this software and in all copies of the supporting
8 * documentation for such software.
9 * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
10 * WARRANTY. IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE ANY
11 * REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY
12 * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
13 */
14 #include "lib9.h"
15
16 int
sprint(char * buf,char * fmt,...)17 sprint(char *buf, char *fmt, ...)
18 {
19 int n;
20 uint len;
21 va_list args;
22
23 len = 1<<30; /* big number, but sprint is deprecated anyway */
24 /*
25 * the stack might be near the top of memory, so
26 * we must be sure not to overflow a 32-bit pointer.
27 */
28 if((uintptr)buf+len < (uintptr)buf)
29 len = -(uint)buf-1;
30
31 va_start(args, fmt);
32 n = vsnprint(buf, len, fmt, args);
33 va_end(args);
34 return n;
35 }
36