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[SR-7305] Error when accessing .keys or .values on [String: Int] #49853

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NevinBR opened this issue Mar 29, 2018 · 2 comments
Closed

[SR-7305] Error when accessing .keys or .values on [String: Int] #49853

NevinBR opened this issue Mar 29, 2018 · 2 comments
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bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. crash Bug: A crash, i.e., an abnormal termination of software run-time crash Bug → crash: Swift code crashed during execution standard library Area: Standard library umbrella

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@NevinBR
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NevinBR commented Mar 29, 2018

Previous ID SR-7305
Radar None
Original Reporter @NevinBR
Type Bug
Status Resolved
Resolution Duplicate
Environment

Xcode 9.2
Swift 4.0.3

Additional Detail from JIRA
Votes 0
Component/s Standard Library
Labels Bug, RunTimeCrash
Assignee None
Priority Medium

md5: e4b5cff3872bd85ec09b6dd65bfb1e6b

duplicates:

  • SR-6003 EXC_BAD_ACCESS (code=EXC_I386_GPFLT) when accessing dictionary keys

Issue Description:

Example:

let myDict = ["a": 1]
let myKeys = myDict.keys        // error
let myVals = myDict.values      // also an error

// error: Execution was interrupted, reason: EXC_BAD_ACCESS (code=EXC_I386_GPFLT).

This produces a “bad access” error in playgrounds and compiled programs in Xcode, but not in the Swift REPL from the command line.

If the dictionary has Int keys, there is no error.
@belkadan
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I don't see this behavior with Xcode 9.3. @lorentey, does this sound like something we fixed in Swift 4.1?

@lorentey
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This is caused by an issue with mirroring Dictionary's views; it was fixed in 4.1 by having them conform to CustomStringRepresentible:

https://bugs.swift.org/browse/SR-6003

@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
This issue was closed.
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bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. crash Bug: A crash, i.e., an abnormal termination of software run-time crash Bug → crash: Swift code crashed during execution standard library Area: Standard library umbrella
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@lorentey @belkadan @AnthonyLatsis @NevinBR