[SR-8528] Terminating app due to uncaught exception 'NSInvalidUnarchiveOperationException', reason: 'The data couldn’t be read because it isn’t in the correct format.'

[swift-ci]

Previous ID	SR-8528
Radar	https://bugreport.apple.com/web/?problemID=43234279
Original Reporter	eneko (JIRA User)
Type	Bug

Environment

Swift 4.1.2, Swift 4.2
macOS 10.13.6

Additional Detail from JIRA

Votes	0
Component/s	Foundation
Labels	Bug, Codable
Assignee	None
Priority	Medium

md5: 01f15baed4797624272d6706ec2e24ce

Issue Description:

While using `NSKeyedUnarchiver` with `Codable` I found the swift-only method `

decodeTopLevelDecodable` does not properly catch decoding exceptions, as documented.