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}