mingw-w64-crt/secapi/_vscprintf_p.c

#define _vscprintf_p SAVE__vscprintf_p
#include <stdio.h>
#undef _vscprintf_p

int __cdecl _vscprintf_p(const char *format, va_list arglist);
int __cdecl _vscprintf_p(const char *format, va_list arglist)
{
    return _vscprintf_p_l(format, NULL, arglist);
}

int __cdecl (*__MINGW_IMP_SYMBOL(_vscprintf_p))(const char *, va_list) = _vscprintf_p;