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 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