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[SR-5426] Data slices crash when converted to NSData #3836

CharlesJS opened this issue Jul 11, 2017 · 1 comment

[SR-5426] Data slices crash when converted to NSData #3836

CharlesJS opened this issue Jul 11, 2017 · 1 comment


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CharlesJS commented Jul 11, 2017

Previous ID SR-5426
Radar None
Original Reporter @CharlesJS
Type Bug
Status Resolved
Resolution Done

Xcode 9 beta 3
Current trunk is currently failing to build.

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

md5: d5ab644c7bd1355aa0e4739968755585

is duplicated by:

  • SR-5425 Data slices do not convert to String properly

Issue Description:

If a Data slice is constructed using a partial range, and that slice is converted to an NSData, that NSData will crash the next time it is printed.

import Foundation

let data = "FooBar".data(using: .ascii)!
let slice = data[3...]

let nsSlice = slice as NSData
print(nsSlice) // terminated due to signal: SEGMENTATION FAULT (11)

If the slice is constructed using 3..<6 instead of 3... , then this works.

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belkadan commented Jul 11, 2017

@phausler fixed this recently.

@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
@shahmishal shahmishal transferred this issue from apple/swift May 5, 2022
This issue was closed.
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