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[SR-4922] CharacterSet.isSubset() crash on Linux #4101

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swift-ci opened this issue May 18, 2017 · 1 comment
Closed

[SR-4922] CharacterSet.isSubset() crash on Linux #4101

swift-ci opened this issue May 18, 2017 · 1 comment
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bug Foundation Linux RunTimeCrash

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@swift-ci
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Previous ID SR-4922
Radar None
Original Reporter dram (JIRA User)
Type Bug
Status Resolved
Resolution Cannot Reproduce
Environment

I'm using swift-DEVELOPMENT-SNAPSHOT-2017-05-16-a-ubuntu16.04 on Ubuntu 16.04.

Additional Detail from JIRA
Votes 0
Component/s Foundation
Labels Bug, Linux, RunTimeCrash
Assignee mattrajca (JIRA)
Priority Medium

md5: ee1b458658abfb91cb45bcce414a0d8c

Issue Description:

Following code will cause crash on Linux:

import Foundation
let set = CharacterSet()
print(set.isSubset(of: set))

From backtrace of the core dump, it seems that it is caused by a stack overflow:

    frame #&#8203;80562: 0x00007f5bb17562be libFoundation.so`Foundation.NSCharacterSet.isEqual(Swift.Optional<Any>) -> Swift.Bool + 414
    frame #&#8203;80563: 0x00007f5bb192c152 libFoundation.so`@objc Foundation._CFSwiftIsEqual(Swift.AnyObject, cf2: Swift.AnyObject) -> Swift.Bool + 114
    frame #&#8203;80564: 0x00007f5bb17562be libFoundation.so`Foundation.NSCharacterSet.isEqual(Swift.Optional<Any>) -> Swift.Bool + 414
    frame #&#8203;80565: 0x00007f5bb192c152 libFoundation.so`@objc Foundation._CFSwiftIsEqual(Swift.AnyObject, cf2: Swift.AnyObject) -> Swift.Bool + 114
    frame #&#8203;80566: 0x00007f5bb17562be libFoundation.so`Foundation.NSCharacterSet.isEqual(Swift.Optional<Any>) -> Swift.Bool + 414
    frame #&#8203;80567: 0x00007f5bb19ec126 libFoundation.so`(extension in Foundation):Foundation._SwiftNativeFoundationType.isEqual(Swift.AnyObject) -> Swift.Bool + 118
    frame #&#8203;80568: 0x00007f5bb1a27228 libFoundation.so`static Foundation.CharacterSet.== infix(Foundation.CharacterSet, Foundation.CharacterSet) -> Swift.Bool + 72
    frame #&#8203;80569: 0x00007f5bb1a2727f libFoundation.so`protocol witness for static Swift.Equatable.== infix(A, A) -> Swift.Bool in conformance Foundation.CharacterSet : Swift.Equatable in Foundation + 15
    frame #&#8203;80570: 0x00007f5bb2060460 libswiftCore.so`(extension in Swift):Swift.SetAlgebra.isSubset(of: A) -> Swift.Bool + 112
    frame #&#8203;80571: 0x00007ffc303c7e79 foo`main + 153
    frame #&#8203;80572: 0x00007f5bb013f830 libc.so.6`__libc_start_main(main=(foo`main), argc=1, argv=0x00007ffc303c2c88, init=<unavailable>, fini=<unavailable>, rtld_fini=<unavailable>, stack_end=0x00007ffc303c2c78) at libc-start.c:291
    frame #&#8203;80573: 0x00007ffc303c7cf9 foo`_start + 41
@swift-ci
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Comment by Matt Rajca (JIRA)

No longer crashes in the 9/7 toolchain and "true" is printed.

@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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