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[SR-9335] invalid Collection: more than 'count' elements in collection #51805

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jpsim opened this issue Nov 24, 2018 · 2 comments
Closed

[SR-9335] invalid Collection: more than 'count' elements in collection #51805

jpsim opened this issue Nov 24, 2018 · 2 comments
Labels
bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler in itself crash Bug: A crash, i.e., an abnormal termination of software regression run-time crash Bug → crash: Swift code crashed during execution standard library Area: Standard library umbrella swift 5.0

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@jpsim
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jpsim commented Nov 24, 2018

Previous ID SR-9335
Radar rdar://problem/46264497
Original Reporter @jpsim
Type Bug
Status Closed
Resolution Done
Additional Detail from JIRA
Votes 0
Component/s Compiler, Standard Library
Labels Bug, 5.0Regression, RunTimeCrash
Assignee None
Priority Medium

md5: 737a28126b20b8a0860215327e370ad4

Issue Description:

This works with Swift 4.2.1 but crashes in recent snapshots.

$ git clone https://github.com/jpsim/Yams.git
$ cd Yams
$ echo "swift-DEVELOPMENT-SNAPSHOT-2018-11-14-a" > .swift-version
$ swiftenv install
$ swift test
Compile Swift Module 'Yams' (16 sources)
/Users/jsimard/Projects/Yams/Sources/Yams/Representer.swift:21:5: warning: 'public' modifier is redundant for initializer declared in a public extension
    public init<T: NodeRepresentable>(_ representable: T) throws {
    ^~~~~~~
    

Linking ./.build/x86_64-apple-macosx10.10/debug/YamsPackageTests.xctest/Contents/MacOS/YamsPackageTests
Test Suite 'All tests' started at 2018-11-24 14:21:49.986
Test Suite 'YamsPackageTests.xctest' started at 2018-11-24 14:21:49.986
Test Suite 'ConstructorTests' started at 2018-11-24 14:21:49.986
Test Case '-[YamsTests.ConstructorTests testBinary]' started.
Fatal error: invalid Collection: more than 'count' elements in collection
Exited with signal code 4

Looking at the code in question, this happens when initializing an Array with a custom Sequence:

var pairs = Array(mapping)
@norio-nomura
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I confirmed that this issue has been fixed on latest swift-DEVELOPMENT-SNAPSHOT-2018-12-07-a and swift-5.0-DEVELOPMENT-SNAPSHOT-2018-12-08-a.
jpsim/Yams#139

@jpsim
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jpsim commented Dec 10, 2018

Thanks for confirming!

@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
@AnthonyLatsis AnthonyLatsis added the crash Bug: A crash, i.e., an abnormal termination of software label Dec 12, 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 crash Bug: A crash, i.e., an abnormal termination of software regression run-time crash Bug → crash: Swift code crashed during execution standard library Area: Standard library umbrella swift 5.0
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@norio-nomura @jpsim @AnthonyLatsis