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Sun, 03 Apr 2022 18:04:41 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: Bart Schaefer Date: Sun, 3 Apr 2022 18:04:30 -0700 Message-ID: Subject: Re: Hang in E01 due to zpty on OpenBSD To: Zsh hackers list Content-Type: text/plain; charset="UTF-8" X-Seq: 49978 Archived-At: X-Loop: zsh-workers@zsh.org Errors-To: zsh-workers-owner@zsh.org Precedence: list Precedence: bulk Sender: zsh-workers-request@zsh.org X-no-archive: yes List-Id: List-Help: List-Subscribe: List-Unsubscribe: List-Post: List-Owner: List-Archive: On Sun, Apr 3, 2022 at 2:43 PM Matthew Martin wrote: > > I assume the EPERM on open is an OpenBSD bug, but zsh should probably > not hang either. I'm not sure what could be done about this from the zsh code. The only reasonable assumption for the pty master-side reader is that the slave-slide will become closed upon an error and the read will fail. Using a non-blocking read would defeat the purpose. I suppose we could skip the test on OpenBSD, but there are a bunch of later tests that rely on zpty functioning.