[SR-15560] LLDB error: cannot find type in async contexts

[tonyarnold]

Previous ID	SR-15560
Radar	None
Original Reporter	@tonyarnold
Type	Bug

Environment

macOS 12.0.1 (21A559)

swift-driver version: 1.26.21 Apple Swift version 5.5.2 (swiftlang-1300.0.47.2 clang-1300.0.29.30)

Target: arm64-apple-macosx12.0

Model Name: MacBook Pro
Model Identifier: MacBookPro18,2
Chip: Apple M1 Max
Total Number of Cores: 10 (8 performance and 2 efficiency)
Memory: 64 GB

Additional Detail from JIRA

Votes	0
Component/s	LLDB for Swift
Labels	Bug
Assignee	None
Priority	Medium

md5: 2765256934942a20087e5da831a414fa

Issue Description:

I'm seeing issues in Xcode 13.2 beta 2 (13C5081f) / Swift 5.5.2 where any breakpoints set within async methods or contexts result in LLDB being unusable:

(lldb) po self
error: <EXPR>:2:11: error: cannot find type '$__lldb_context' in scope
extension $__lldb_context {
          ^~~~~~~~~~~~~~~


error: <EXPR>:19:5: error: cannot find '$__lldb_injected_self' in scope
    $__lldb_injected_self.$__lldb_wrapped_expr_0(
    ^~~~~~~~~~~~~~~~~~~~~

This is happening both within a macOS app targeting macOS 11, and within a Vapor web application - both executing/debugging under macOS 12.0.1.