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[SR-11623] Functions with generic param magic literal default args can't be called #54034

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hamishknight opened this issue Oct 16, 2019 · 1 comment
Closed

[SR-11623] Functions with generic param magic literal default args can't be called #54034

hamishknight opened this issue Oct 16, 2019 · 1 comment
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@hamishknight
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bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler in itself type checker Area → compiler: Semantic analysis

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@hamishknight
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Previous ID SR-11623
Radar None
Original Reporter @hamishknight
Type Bug
Status Closed
Resolution Done
Environment

Swift version 5.1.1-dev (LLVM 8544999921, Swift ccd9948b71)
Target: x86_64-apple-darwin18.7.0

Additional Detail from JIRA
Votes 0
Component/s Compiler
Labels Bug, TypeChecker
Assignee @hamishknight
Priority Medium

md5: 006d4793b18af69220ff1ce766e75f2b

Issue Description:

The following fails to compile:

func foo<T : ExpressibleByStringLiteral>(x: T = #file) -> T { x }
let _: String = foo() // error: Default argument value of type 'String' cannot be converted to type 'T'

But arguably it should compile.
@hamishknight
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Fixed by #27838

@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
This issue was closed.
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@hamishknight hamishknight

Labels
bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler in itself type checker Area → compiler: Semantic analysis
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@hamishknight