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[SR-9252] Source compatibility failure in Tagged project (master branch) #51734

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xedin opened this issue Nov 14, 2018 · 1 comment
Open

[SR-9252] Source compatibility failure in Tagged project (master branch) #51734

xedin opened this issue Nov 14, 2018 · 1 comment
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bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler in itself source compatibility standard library Area: Standard library umbrella

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@xedin
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xedin commented Nov 14, 2018

Previous ID SR-9252
Radar None
Original Reporter @xedin
Type Bug
Additional Detail from JIRA
Votes 0
Component/s Compiler, Standard Library
Labels Bug, SourceCompatibility
Assignee None
Priority Medium

md5: 32737c25a375811c27bc118d623e45c1

Issue Description:

After adding AdditiveArithmetic protocol one of the source compatibility suite projects `Tagged` started failing with following error:

/Users/buildnode/jenkins/workspace-private/swift-master-source-compat-suite/project_cache/Tagged/Sources/Tagged/Tagged.swift:110:1: error: conditional conformance of type 'Tagged<Tag, RawValue>' to protocol 'Numeric' does not imply conformance to inherited protocol 'AdditiveArithmetic'
extension Tagged: Numeric where RawValue: Numeric {
^

e.g. https://ci.swift.org/view/Source%20Compatibility/job/swift-master-source-compat-suite/2852/artifact/swift-source-compat-suite/FAIL_Tagged_4.1_BuildSwiftPackage.log
@belkadan
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cc @airspeedswift

@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
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bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler in itself source compatibility standard library Area: Standard library umbrella
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@xedin @belkadan