[SR-9252] Source compatibility failure in Tagged project (master branch) #51734
Labels
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
Additional Detail from JIRA
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
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