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[SR-7414] Redundant conditional conformance constraints left without warning #49957

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AnthonyLatsis opened this issue Apr 11, 2018 · 2 comments
Closed

[SR-7414] Redundant conditional conformance constraints left without warning #49957

AnthonyLatsis opened this issue Apr 11, 2018 · 2 comments
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compiler The Swift compiler in itself diagnostics QoI Bug: Diagnostics Quality of Implementation improvement

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@AnthonyLatsis
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Previous ID SR-7414
Radar None
Original Reporter @AnthonyLatsis
Type Improvement
Additional Detail from JIRA
Votes 0
Component/s Compiler
Labels Improvement, DiagnosticsQoI
Assignee None
Priority Medium

md5: 413586ebae5fd5df618cfb920436462c

Issue Description:

In Xcode 9.4 beta (Swift 4.1), redundant conformance constraints in conditional conformances do not produce warnings:

protocol P {}

protocol P1 {}

class A<T> where T: P {}

extension A: P1 where T: P {} // No warning
@belkadan
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cc @huonw

@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
@slavapestov
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I actually fixed this in #41820, but redundant requirement warnings are now disabled by default.

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compiler The Swift compiler in itself diagnostics QoI Bug: Diagnostics Quality of Implementation improvement
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@slavapestov @belkadan @AnthonyLatsis