Re: Strange terminal resizing behavior on macOS 11.6 and calling pwsh under zsh

[Andrew Owen <andrew.owen@principlestudios.com>]

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> On Oct 6, 2021, at 7:03 PM, Bart Schaefer <schaefer@brasslantern.com> wrote:
> 
> On Wed, Oct 6, 2021 at 4:06 PM Andrew Owen
> <andrew.owen@principlestudios.com> wrote:
>> 
>> I seem to have found a curious bug in how zsh interacts with pwsh on macOS 11.6. I first reported it to the pwsh team, here: https://github.com/PowerShell/PowerShell/issues/16174
> 
> I presume we can ignore the typo in
> https://github.com/PowerShell/PowerShell/issues/16174#issuecomment-934715868
> ("/usr/local/bin pwsh ...”).
Yes, that typo doesn’t exist in the actual script, Safari has some spell-correcting in place that misfires on occasion. 

> I would suggest two things:
> 1) Examine the pwsh process with dtruss while attempting to reproduce
> the issue, to give some hint of whether QUIT is actually being
> received.  Maybe you can figure out from where.

This is what I see when I target the zsh parent process (I got sidetracked with the pwsh process, which seems rather noisy from a syscall standpoint)

SYSCALL(args) 		 = return
dtrace: error on enabled probe ID 1657 (ID 258: syscall::sigprocmask:return): invalid user access in action #5 at DIF offset 0
dtrace: error on enabled probe ID 1657 (ID 258: syscall::sigprocmask:return): invalid user access in action #5 at DIF offset 0
dtrace: error on enabled probe ID 2212 (ID 270: syscall::ioctl:return): invalid user access in action #5 at DIF offset 0
dtrace: error on enabled probe ID 2082 (ID 530: syscall::sigreturn:return): invalid user access in action #5 at DIF offset 0


> 2) Try using "exec /usr/local/bin/pwsh ..." in the script so the zsh
> parent is removed from the process tree, and then try to reproduce the
> issue.
This makes it so that the reproduction steps I listed before no longer lead to the crash. 


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