mirror of https://github.com/0intro/wmii
41 lines
1.3 KiB
C
41 lines
1.3 KiB
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 <stdarg.h>
|
|
#include "plan9.h"
|
|
#include "fmtdef.h"
|
|
|
|
int
|
|
sprint(char *buf, const char *fmt, ...)
|
|
{
|
|
int n;
|
|
uint len;
|
|
va_list args;
|
|
|
|
len = 1<<30; /* big number, but sprint is deprecated anyway */
|
|
/*
|
|
* on PowerPC, the stack is near the top of memory, so
|
|
* we must be sure not to overflow a 32-bit pointer.
|
|
*
|
|
* careful! gcc-4.2 assumes buf+len < buf can never be true and
|
|
* optimizes the test away. casting to uintptr works around this bug.
|
|
*/
|
|
if((uintptr_t)buf+len < (uintptr_t)buf)
|
|
len = -(uintptr_t)buf-1;
|
|
|
|
va_start(args, fmt);
|
|
n = vsnprint(buf, len, fmt, args);
|
|
va_end(args);
|
|
return n;
|
|
}
|