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[SR-10479] @objc protocol metatype test produces incorrect warning #52879

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mpangburn opened this issue Apr 13, 2019 · 1 comment

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bug compiler

mpangburn commented Apr 13, 2019


Previous ID	SR-10479
Radar	None
Original Reporter	@mpangburn
Type	Bug

Additional Detail from JIRA


Votes	0
Component/s	Compiler
Labels	Bug
Assignee	None
Priority	Medium

md5: fa805ce4904bb3d8703d2974915a4bfa

Issue Description:

Testing the metatype of an @objc protocol against AnyObject.Type produces a false warning:

import Foundation

@objc protocol ObjCProto { }
print(ObjCProto.self is AnyObject.Type) // Warning: 'is' test is always true
// Prints 'false'

Contributor

belkadan commented Apr 15, 2019

Hm, I think the compiler is indeed the one in the wrong here. @slavapestov?

swift-ci transferred this issue from apple/swift-issues

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