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[SR-1324] Passing a parameter of type protocol P to a generic method with a protocol P constraint fails #43932

stuartcarnie opened this issue Apr 26, 2016 · 1 comment


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@stuartcarnie stuartcarnie commented Apr 26, 2016

Previous ID SR-1324
Radar None
Original Reporter @stuartcarnie
Type Bug
Status Resolved
Resolution Duplicate

Attachment: Download


OS X 10.11.5 Beta 2

Additional Detail from JIRA
Votes 0
Component/s Compiler
Labels Bug
Assignee None
Priority Medium

md5: 4be481df59ed0f10559f54551d870724


  • SR-55 non-@objc protocol existentials do not conform to their own protocol type

Issue Description:

Per the attached Swift file, line 21 will result in a compiler error attempting to call testP with a parameter of type protocol P. Naturally the parameter conforms to P. I tested against 0425 SNAPSHOT and it did not pass.

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@belkadan belkadan commented Apr 28, 2016

It is actually not generally the case that a value of type P can be used with a generic parameter constrained by P—for example, if P has static requirements.

@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
This issue was closed.
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