From: Phillip Wood <phillip.wood123@gmail.com>
Date: Mon, 11 Sep 2023 10:14:31 GMT
Subject: Re: [PATCH] rebase -i: ignore signals when forking subprocesses
Message-ID: <a37a0f11-0723-4964-a187-54d960615d79@gmail.com>
In-Reply-To: <80eb7631-e5c0-497e-b2a9-b1f8c8a4a306@gmail.com>

On 11/09/2023 11:00, Phillip Wood wrote:
> There is an inevitable race between wait() returning and calling 
> signal() to restore the handlers for SIGINT and SIGQUIT,

In principle if we installed a signal handler to set a flag if a signal 
is received while calling wait() and then once wait() returns 
successfully see if the child was killed we can tell if the signal was 
received while the child was alive. In practice if the child is catching 
SIGINT or SIGQUIT we cannot rely on it re-raising the signal so that 
wont work.

Best Wishes

Phillip