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[SR-6013] Segmentation fault while creating Set from Array inside an extension #48570

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twostraws opened this issue Sep 27, 2017 · 0 comments
Closed

[SR-6013] Segmentation fault while creating Set from Array inside an extension #48570

twostraws opened this issue Sep 27, 2017 · 0 comments
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bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler in itself

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@twostraws
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Previous ID SR-6013
Radar None
Original Reporter @twostraws
Type Bug
Status Resolved
Resolution Duplicate
Environment

Apple Swift version 4.0.1 (swiftlang-900.0.66 clang-900.0.37)

Additional Detail from JIRA
Votes 0
Component/s Compiler
Labels Bug
Assignee None
Priority Medium

md5: a9de0452f30767b17f04ab9a7d7ab63a

duplicates:

  • SR-5934 Segmentation fault: 11 when creating a Set from an array of arrays

Issue Description:

The following code causes a segmentation fault:

extension Array {
    var isUnique: Bool {
        return self.count == Set(self).count
    }
}

The error is:

Stack dump:
0.  While emitting SIL for getter for isUnique at /var/folders/9n/4dpx4zb51qj9wc_fvxcv7_t00000gn/T/repl1-f3a44d..swift:2:13
[1]    18424 segmentation fault  swift

The problem goes away when the extension is restricted using "where Element: Hashable".
@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
This issue was closed.
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bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler in itself
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@twostraws