[issue17797] Visual C++ 11.0 reports fileno(stdin) == 0 for non-console program

[Mateusz Loskot]

Mateusz Loskot added the comment:

Yes, it does. In file Modulfileio.c, in function fileio_init, there is this code:

    if (fd >= 0) {
        if (check_fd(fd))
            goto error;
        self->fd = fd;
        self->closefd = closefd;
    }

The check_fd tests:

if (!_PyVerify_fd(fd) || (fstat(fd, &buf) < 0 && errno == EBADF)) {

The _PyVerify_fd(fd) == 1, but errno is "Bad file descriptor".

This eventually leads to Py_InitializeEx failure at:

    if (initstdio() < 0)
        Py_FatalError(
            "Py_Initialize: can't initialize sys standard streams");

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<http://bugs.python.org/issue17797>
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