ref: 354b56d6bfdca067a6f04a39c4ce4bc9c0160861
dir: /lib9/sprint.c/
/*
* The authors of this software are Rob Pike and Ken Thompson.
* Copyright (c) 2002 by Lucent Technologies.
* Permission to use, copy, modify, and distribute this software for any
* purpose without fee is hereby granted, provided that this entire notice
* is included in all copies of any software which is or includes a copy
* or modification of this software and in all copies of the supporting
* documentation for such software.
* THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
* WARRANTY. IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE ANY
* REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY
* OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
*/
#include "lib9.h"
int
sprint(char *buf, char *fmt, ...)
{
int n;
uint len;
va_list args;
len = 1<<30; /* big number, but sprint is deprecated anyway */
/*
* the stack might be near the top of memory, so
* we must be sure not to overflow a 32-bit pointer.
*/
if((uintptr)buf+len < (uintptr)buf)
len = -(uint)buf-1;
va_start(args, fmt);
n = vsnprint(buf, len, fmt, args);
va_end(args);
return n;
}