1/**
2 * This file has no copyright assigned and is placed in the Public Domain.
3 * This file is part of the mingw-w64 runtime package.
4 * No warranty is given; refer to the file DISCLAIMER.PD within this package.
5 */
6#define __CRT__NO_INLINE
7#include <stdarg.h>
8#include <stdio.h>
9
10int __cdecl __ms_vsnprintf (char *s,size_t n,const char *format,va_list arg)
11{
12 int retval;
13
14 /* _vsnprintf() does not work with zero length buffer
15 * so count number of character by _vscprintf() call */
16 if (n == 0)
17 return _vscprintf(format, arg);
18
19 retval = _vsnprintf(s, n, format, arg);
20
21 /* _vsnprintf() does not fill trailing null byte if there is not place for it */
22 if (retval < 0 || (size_t)retval == n)
23 s[n-1] = '\0';
24
25 /* _vsnprintf() returns negative number if buffer is too small
26 * so count number of character by _vscprintf() call */
27 if (retval < 0)
28 retval = _vscprintf(format, arg);
29
30 return retval;
31}