Function SDL_vsnprintf

deps/SDL2/src/stdlib/SDL_string.c:1373–1381

_vsnprintf() doesn't ensure nul termination */

#if defined(HAVE_LIBC) && defined(__WATCOMC__)
/* _vsnprintf() doesn't ensure nul termination */
int SDL_vsnprintf(SDL_OUT_Z_CAP(maxlen) char *text, size_t maxlen, const char *fmt, va_list ap)
{
    int retval;
    if (!fmt) fmt = "";
    retval = _vsnprintf(text, maxlen, fmt, ap);
    if (maxlen > 0) text[maxlen-1] = '\0';
    if (retval < 0) retval = (int) maxlen;
    return retval;
}
#elif defined(HAVE_VSNPRINTF)
int SDL_vsnprintf(SDL_OUT_Z_CAP(maxlen) char *text, size_t maxlen, const char *fmt, va_list ap)
{