[SR-12925] Property Name Collision handled incorrectly #55371

swift-ci · 2020-06-02T10:06:00Z

Attachment: Download

Environment

Xcode 11.3.1

Swift: 5.1

Additional Detail from JIRA

md5: 3c162fdb3f570c4a80ac0ec03f3118da

Issue Description:

1. We have defined a Protocol:

protocol ExampleProtocol {
      var parameters: [String: Any]
}

2. Added a Protocol extension with default empty value

extension ExampleProtocol {
      var parameters: [String: Any]  {                        
            [:]                
       }
}

struct ContentAPIRequest: ExampleProtocol {                  
           var parameters: [String: Any]? // No Error thrown as the type mismatches
}

Even though the Type [String: Any] and [String: Any]? are different, the compiler doesn't throw any error.

LucianoPAlmeida · 2020-06-03T02:19:29Z

On Xcode 11.5 the compiler throws an error, it's not type mismatch but no protocol conformance

![](Screen Shot 2020-06-02 at 22.16.09.png)

So maybe this is fixed sachinvas16 (JIRA User)

swift-ci · 2020-06-03T06:12:16Z

Comment by Sachin Vas (JIRA)

@LucianoPAlmeida Yes it is fixed in Xcode 11.5, thank you.

LucianoPAlmeida · 2020-06-03T09:57:50Z

So if you verify its fixed, think we can close this 🙂
cc @xedin

swift-ci transferred this issue from apple/swift-issues Apr 25, 2022

This issue was closed.

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