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From: Eli Zaretskii <eliz@gnu.org>
To: Andreas Schwab <schwab@linux-m68k.org>
Cc: larsi@gnus.org, sunlin7@yahoo.com, 44320@debbugs.gnu.org,
	lin.sun@zoom.us
Subject: bug#44320: [PATH] [27.1] Make sure send-string-to-terminal send all contents
Date: Mon, 02 Nov 2020 20:35:57 +0200	[thread overview]
Message-ID: <83o8kfd2sy.fsf@gnu.org> (raw)
In-Reply-To: <87h7q7zkiq.fsf@igel.home> (message from Andreas Schwab on Mon, 02 Nov 2020 19:22:21 +0100)

> From: Andreas Schwab <schwab@linux-m68k.org>
> Cc: lin.sun@zoom.us,  larsi@gnus.org,  sunlin7@yahoo.com,
>   44320@debbugs.gnu.org
> Date: Mon, 02 Nov 2020 19:22:21 +0100
> 
> On Nov 02 2020, Eli Zaretskii wrote:
> 
> > But that means 'fwrite' could return zero, if its very first call to
> > 'write' got interrupted, no?
> 
> No.  When an error occurs, it returns EOF.

Is EINTR considered an error for this purpose?  If not, what exactly
is considered an error?  I don't see this clearly documented, so it
could be something we cannot rely on.  In fact, I don't even see in
portable documentation that it will return EOF upon errors, I only see
that the error indication for the stream shall be set and errno shall
be set.

In short, it sounds like calling fwrite in a loop will only work by
sheer luck.





  reply	other threads:[~2020-11-02 18:35 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-29 23:01 bug#44320: [PATH] [27.1] Make sure send-string-to-terminal send all contents Lin Sun via Bug reports for GNU Emacs, the Swiss army knife of text editors
2020-10-30  0:36 ` Lin Sun via Bug reports for GNU Emacs, the Swiss army knife of text editors
2020-10-30  8:06 ` Eli Zaretskii
2020-10-30 12:38   ` Lars Ingebrigtsen
2020-10-30 13:25     ` Eli Zaretskii
2020-11-02  2:58       ` LinSun via Bug reports for GNU Emacs, the Swiss army knife of text editors
2020-11-02  3:11         ` LinSun via Bug reports for GNU Emacs, the Swiss army knife of text editors
2020-11-02 15:31           ` Eli Zaretskii
2020-11-02 15:49             ` Andreas Schwab
2020-11-02 16:14               ` Eli Zaretskii
2020-11-02 16:41                 ` Andreas Schwab
2020-11-02 17:10                   ` Eli Zaretskii
2020-11-02 17:36                     ` Andreas Schwab
2020-11-02 17:59                       ` Eli Zaretskii
2020-11-02 18:02                         ` Andreas Schwab
2020-11-02 18:12                           ` Eli Zaretskii
2020-11-02 18:22                             ` Andreas Schwab
2020-11-02 18:35                               ` Eli Zaretskii [this message]
2020-11-02 18:58                                 ` Andreas Schwab
2020-11-02 19:31                                   ` Eli Zaretskii
2020-11-02 20:26                                     ` Andreas Schwab
     [not found]                                       ` <4BD75783-F561-4DB8-A733-13A3D924C8C1@hxcore.ol>
2020-11-03 15:29                                         ` Eli Zaretskii
2020-11-05  0:14                                           ` LinSun via Bug reports for GNU Emacs, the Swiss army knife of text editors
2020-11-07  9:28                                             ` Eli Zaretskii
2020-11-09  2:27                                               ` LinSun via Bug reports for GNU Emacs, the Swiss army knife of text editors
2020-11-05 15:59                                       ` Eli Zaretskii
2020-11-05 16:07                                         ` Andreas Schwab
2020-11-02 15:22         ` Lars Ingebrigtsen
2020-11-02 16:07           ` Eli Zaretskii
2020-11-02 16:30             ` Lars Ingebrigtsen

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