[EXTERNAL] Re: scp stalls on uploading in cygwin 3.5 current master.

[Takashi Yano]

On Sat, 26 Aug 2023 14:08:34 +0000
"Lavrentiev, Anton (NIH/NLM/NCBI) [C]" wrote:
> IMO you're triggering an undefined (or not well-defined) behavior, because of the murky status
> of the byte count of 0.  It may work now, but it may not work in the future...
> 
> RETURN VALUE
>        On  success,  the  number of bytes written is returned (zero indicates nothing was written).  On error, -1 is returned, and
>        errno is set appropriately.
> 
>        If count is zero and fd refers to a regular file, then write() may return a failure status if one of the  errors  below  is
>        detected.   If no errors are detected, 0 will be returned without causing any other effect.  If count is zero and fd refers
>        to a file other than a regular file, the results are not specified.

You seems to reffer Linux man, however, this patch calls
ssize_t fhandler_socket_wsock::write (const void *in_ptr, size_t len)
of cygwin, NOT Linux write().

-- 
Takashi Yano <takashi.yano@nifty.ne.jp>