[SR-14417] A OC-Swift bridging case cause of 'Segmentation fault: 11'

[swift-ci]

Previous ID	SR-14417
Radar	rdar://problem/75956839
Original Reporter	C. (JIRA User)
Type	Bug

Attachment: Download

Environment

Swift_MVP.zip

Additional Detail from JIRA

Votes	1
Component/s	Compiler
Labels	Bug, CompilerCrash
Assignee	@rjmccall
Priority	Medium

md5: b0be6cb984bdccfe0c9f20ab213ae338

Issue Description:

If a class property is declared in OC and modified in Swift, the Swift compiler will crash with "Segmentation fault: 11" when building the project.

If the crash doesn't occur, remembering to clean build folder and rebuild the project.

And I've built the Swift project and reproduced the crash, which is caused by verifying an abnormal SILInstruction .The crash screenshot is attached

Xcode version : 12.4 (12D4e)

MacOS version :10.15.5 (19F101)

Tthe demo project is attached.

[typesanitizer]

@swift-ci create

[nate-chandler]

It looks like this may be fixed in Xcode 12.5 Beta 3. Can you try building the project there?

[swift-ci]

Comment by C (JIRA)

It still crashes in Xcode 12.5 Beta 3 / MacOS 11.1 (20C69)

[swift-ci]

Comment by farm (JIRA)

Xcode 12.5/ MacOS 11.4 (20F71) ,still crash.