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[SR-1914] Array '+' fails to type check #44523

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gribozavr opened this issue Jun 27, 2016 · 4 comments
Closed

[SR-1914] Array '+' fails to type check #44523

gribozavr opened this issue Jun 27, 2016 · 4 comments
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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@gribozavr
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Previous ID SR-1914
Radar None
Original Reporter @gribozavr
Type Bug
Status Closed
Resolution Cannot Reproduce
Environment

Xcode Version 9.2 (9C40b)

Swift 4.0.3

Additional Detail from JIRA
Votes 1
Component/s Compiler
Labels Bug, TypeChecker
Assignee None
Priority Medium

md5: a9a12061c71c15fd20185f313dd82c65

Issue Description:

I think this code should type check:

func quickSort(_ array: [Int]) -> [Int] {
  let pivot = 0
  return quickSort(array) + [pivot] + quickSort(array) // error: 'Int' is not convertible to '[Int]'
}
@swift-ci
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Comment by Paul Taykalo (JIRA)

It can also be simplified to something like

let i:Int = 2
let s:[Int] = [i] + [i] + [i] // Error: 'Int' is not convertible to '[Int]'

@swift-ci
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Comment by Junkai Wu (JIRA)

Still a bug in Swift 4

@swift-ci
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Comment by Junkai Wu (JIRA)

Seems it's solved in Swift 4.1. Nice!

@mdiep
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mdiep commented Jun 15, 2018

Fixed in Swift 4.1, as noted above.

@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
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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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@mdiep @gribozavr @swift-ci