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[SR-11377] _NativeClass layout constraint leaks into diagnostics #53778

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swift-ci opened this issue Aug 26, 2019 · 2 comments
Closed

[SR-11377] _NativeClass layout constraint leaks into diagnostics #53778

swift-ci opened this issue Aug 26, 2019 · 2 comments
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bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler in itself diagnostics QoI Bug: Diagnostics Quality of Implementation

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@swift-ci
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Previous ID SR-11377
Radar rdar://problem/88519088
Original Reporter owenvoorhees (JIRA User)
Type Bug
Additional Detail from JIRA
Votes 0
Component/s Compiler
Labels Bug, DiagnosticsQoI
Assignee None
Priority Medium

md5: 94dd0628e4fb8057c4c5cb4446456564

Issue Description:

If I write:

class MyClass {}
protocol MyProto: AnyObject, MyClass {}

The resulting error:

/Users/owenvoorhees/Desktop/hello.swift:5:27: warning: redundant constraint 'Self' : 'AnyObject' [redundant_layout_constraint]
public protocol SubProto: AnyObject, MyClass {}
                          ^
/Users/owenvoorhees/Desktop/hello.swift:5:38: note: constraint 'Self' : '_NativeClass' implied here [previous_layout_constraint]
public protocol SubProto: AnyObject, MyClass {}
                                     ^

Refers to the _NativeClass constraint. This is technically correct, but probably not the best way to present this to the user.
@slavapestov
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@swift-ci create

@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
@slavapestov
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Redundant requirement warnings are now disabled by default.

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bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler in itself diagnostics QoI Bug: Diagnostics Quality of Implementation
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@slavapestov @swift-ci