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[SR-2580] Call to a generic function that expects argument to conform a protocol fails if argument compose multiple protocols. #45185

swift-ci opened this issue Sep 8, 2016 · 0 comments


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@swift-ci swift-ci commented Sep 8, 2016

Previous ID SR-2580
Radar None
Original Reporter nikita (JIRA User)
Type Bug
Status Resolved
Resolution Duplicate
Additional Detail from JIRA
Votes 0
Component/s Compiler
Labels Bug, TypeChecker
Assignee None
Priority Medium

md5: 529ab262cc74a0bad21200ae117b0f2a


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

Issue Description:

Following code cause a error — Cannot invoke `foo` with an argument list of type `(bar: A & B)`:

protocol A {}
protocol B {}
class C: A, B {}
func foo<T>(bar: T) where T: A {}
let c: A & B = C()
foo(bar: c)

If c defined as following, everything works:

let c: A = C()
@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
This issue was closed.
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