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[SR-6744] Compiler crash when using KeyPath to property with the same name as a func #49293

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ffried opened this issue Jan 12, 2018 · 4 comments
Closed

[SR-6744] Compiler crash when using KeyPath to property with the same name as a func #49293

ffried opened this issue Jan 12, 2018 · 4 comments
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@gregomni
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bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler in itself regression swift 4.1

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@ffried
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ffried commented Jan 12, 2018

Previous ID SR-6744
Radar None
Original Reporter @ffried
Type Bug
Status Closed
Resolution Done

Attachment: Download

Environment 
Apple Swift version 4.1-dev (LLVM b623e863a9, Clang 27a368e018, Swift edecd95413) Target: x86_64-apple-darwin17.3.0
Additional Detail from JIRA
Votes 0
Component/s Compiler
Labels Bug, 4.1Regression
Assignee @gregomni
Priority Medium

md5: b3976cc4019f8f9dab5185c5d91798d0

Issue Description:

The following code reliably crashes the compiler:

struct ABC {
let value: Int
func value(adding i: Int) -> Int { return value + i }
}

let abc = ABC(value: 0)
func get<T>(for kp: KeyPath<ABC, T>) -> T {
return abc[keyPath: kp]
}
_ = get(for: \.value)

The problem seems to be, that the property value has the same name as the value(adding:) function. It no longer crashes when the function is renamed (e.g. increasedValue(adding:)) or removed.

This works fine with Swift 4.0.
@moiseev
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Mannequin

moiseev mannequin commented Jan 12, 2018

/cc @jckarter

@gregomni
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#13943

@ffried
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ffried commented Jan 16, 2018

Will this be fixed for Swift 4.1 as well?

@ffried
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ffried commented Jan 16, 2018

Thanks for the quick fix btw!

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

Labels
bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler in itself regression swift 4.1
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@ffried @gregomni @AnthonyLatsis