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In-Reply-To: <20200121114747.d685f0be18276ee1d5002854@nifty.ne.jp>
From: Koichi Murase <myoga DOT murase AT gmail DOT com>
Date: Thu, 23 Jan 2020 18:49:04 +0800
Message-ID: <CAFLRLk_ScCTNBfqR63MNuqDRWc36DGQJXAwoLVK1Zd-JrUycXw@mail.gmail.com>
Subject: Cygwin 3.3.0: The programs compiled with "-mwindows" cannot read more than one byte from noncanonical mode TTY
To: cygwin AT cygwin DOT com
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2020=E5=B9=B41=E6=9C=8821=E6=97=A5(=E7=81=AB) 10:47 Takashi Yano <takashi.y=
ano AT nifty DOT ne DOT jp>:
> Thanks for the report. I could reproduce the problem under LANG=3Dja_JP.U=
TF-8.
> I have almost caught the culprit. Please wait for a while.

Thank you for the patch fixing the problem. I cherry-picked the patch
and tried it, but there is another problem.

Description:

  The programs compiled with "-mwindows" cannot read more than one
  character from PTY in a non-canonical mode in .  There was no
  problem before the patch "Cygwin: pty: Fix reopening slave in
  push_to_pcon_screenbuffer().".

Repeat-By:

  1. Open Cygwin Terminal (mintty)

  2. Compile the attached program with the following commands.

    $ g++ -o minimal2-con.exe minimal2.cpp
    $ g++ -mwindows -o minimal2-win.exe minimal2.cpp

  3. The expected behavior can be checked with `minimal2-con'.  After
    executing the command, please type some five characters.  The
    string `[RECV]' will be printed five times, and then the program
    will exit.

    $ ./minimal2-con
    [RECV][RECV][RECV][RECV][RECV]
    $

  4. However, with the compile option "-mwindows", we can only see one
    `[RECV]', and the program will hang.

    $ ./minimal2-win
    [RECV]


Best,

Koichi

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