[SR-13861] macOS vs. Linux: exec()'d subprocess runs with different process group

[swift-ci]

Previous ID	SR-13861
Radar	rdar://problem/71446545
Original Reporter	fgasper (JIRA User)
Type	Bug
Status	Resolved
Resolution	Done

Additional Detail from JIRA

Votes	0
Component/s	Foundation
Labels	Bug
Assignee	@spevans
Priority	Medium

md5: 704c68b84ff82bbfc3fb11ad1c756759

Issue Description:

https://forums.swift.org/t/script-behaves-differently-on-rpi-than-on-macos/41728

^^ The above documents an issue that I found when getting started using Swift to do some scripting on Linux.

I didn't see any preexisting issues that describe this problem, and the comments in the thread suggest to me that it might be unreported.

Thank you for your time! I'm looking forward to learning this language better.

[typesanitizer]

@swift-ci create

[spevans]

#2928