[SR-13512] Swift REPL Fails to Launch

[swift-ci]

Previous ID	SR-13512
Radar	rdar://problem/85180676
Original Reporter	reuschj (JIRA User)
Type	Bug

Environment

Mac OS 10.15.6

XCode 11.7

Additional Detail from JIRA

Votes	1
Component/s	LLDB for Swift
Labels	Bug
Assignee	@adrian-prantl
Priority	Medium

md5: c3ea58a73839d6965692266c238b9e6a

Issue Description:

On Swift 5.2.5 Release, 5.3 Development Snapshot, and latest 5.2 Development Snapshot, when I launch the REPL by running:

swift

I get the following error:

**

error: failed to launch REPL process: process exited with status -1 (Error 1)

I tried another system, which currently had an older 5.2 development snapshot installed (01-23) and the REPL launched without issue. However, when I installed the 5.2.5 Release toolchain to that system and launched the REPL, I got the same error as above. If I switch my toolchain back to the January snapshot, the REPL works as expected.

I also tried downloading the oldest 5.2 snapshot off Swift.org (4/28), and the REPL also failed. This would indicate the REPL issue was introduced somewhere between 1/23 and 4/28.

Also, the REPL works in the current Swift for TensorFlow toolchain.

[swift-ci]

Comment by Justin Reusch (JIRA)

Possibly related: https://forums.swift.org/t/rfc-removing-the-integrated-repl/35441/13

[swift-ci]

Comment by Fan Jiang (JIRA)

reuschj (JIRA User) I think this is the temporary solution to this problem.

https://forums.swift.org/t/nightly-toolchain-has-broken-lldb-support-on-macos/53151/3

The official distribution has wrong entitlements.

[swift-ci]

Comment by Justin Reusch (JIRA)

Thanks!

[adrian-prantl]

@swift-ci create

[JDevlieghere]

This turned out to be an issue during resigning. LLDB is correctly signing with get-task-allow but during resigning the entitlement got dropped. This was fixed yesterday and today's nightly build has the correct entitlements.