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Re: Memory error on exporting XPC_SERVICE_NAME from a subshell

X-seq: zsh-workers 50416
From: Bart Schaefer <schaefer@xxxxxxxxxxxxxxxx>
To: Varun Gandhi <varun@xxxxxxxxx>
Cc: Zsh hackers list <zsh-workers@xxxxxxx>
Subject: Re: Memory error on exporting XPC_SERVICE_NAME from a subshell
Date: Tue, 19 Jul 2022 17:11:52 -0700
Archived-at: <https://zsh.org/workers/50416>
In-reply-to: <a6645184-edc4-454c-9302-2784ada23f6b@www.fastmail.com>
List-id: <zsh-workers.zsh.org>
References: <a6645184-edc4-454c-9302-2784ada23f6b@www.fastmail.com>

On Mon, Jul 18, 2022 at 11:46 AM Varun Gandhi <varun@xxxxxxxxx> wrote:
>
> While bisecting my shell configuration for an unrelated issue, I ran into what looks like a use-after-free on exporting XPC_SERVICE_NAME from a subshell.

This is an error in a MacOS library routine.  Previously seen in zsh
with constructs like
% XPC_SERVICE_NAME=0 somecommand

However, if you're able to reproduce it with "env -i
-S'XPC_SERVICE_NAME=0'" then it's not limited to the zsh internals and
should probably be reported to Apple as well.

Follow-Ups:
- Re: Memory error on exporting XPC_SERVICE_NAME from a subshell
  - From: Jun T

References:
- Memory error on exporting XPC_SERVICE_NAME from a subshell
  - From: Varun Gandhi

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