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[SR-13060] swiftc crash when comparing == NSNull.null #55506

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swift-ci opened this issue Jun 22, 2020 · 3 comments
Open

[SR-13060] swiftc crash when comparing == NSNull.null #55506

swift-ci opened this issue Jun 22, 2020 · 3 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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@swift-ci
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Previous ID SR-13060
Radar None
Original Reporter helge (JIRA User)
Type Bug

Attachment: Download

Environment

macOS 10.15.5 (19F101) Xcode 11.5 (11E608c)
Apple Swift version 5.2.4 (swiftlang-1103.0.32.9 clang-1103.0.32.53)

Additional Detail from JIRA
Votes 0
Component/s Compiler
Labels Bug
Assignee asb (JIRA)
Priority Medium

md5: 0b298b0864d5ce84209f5016f3946754

Issue Description:

Kills the compiler:
@CodaFi
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CodaFi commented Jun 22, 2020

Is there an additional declaration of `json` missing? I cannot reproduce a crash against master on macOS or Linux.

@swift-ci
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Comment by Helge Heß (JIRA)

Not sure what you mean by that. The `is` variant compiles fine (so `json` is properly declared, the crash dump contains the code), the `==` variant crashes.

I also tried to replicate the issue in the REPL, and couldn't.

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Comment by Andrew Breckenridge (JIRA)

I'm trying to repro at AndrewSB@a597cef

but it looks like NSObject no longer has null, compiler error:

'null()' has been replaced by 'init()'

Remove '.null'

can you think of any alternatives that might trigger the same crash in swiftc?

@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
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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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@CodaFi @swift-ci