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[SR-9242] After upgrading Swift from 4.1 to 4.2, compiler throws error when compiling Vapor 2.4.5 project on Ubuntu 16.04.5 machine #51730

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swift-ci opened this issue Nov 14, 2018 · 6 comments
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[SR-9242] After upgrading Swift from 4.1 to 4.2, compiler throws error when compiling Vapor 2.4.5 project on Ubuntu 16.04.5 machine #51730

swift-ci opened this issue Nov 14, 2018 · 6 comments
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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 swift 4.2

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@swift-ci
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Previous ID SR-9242
Radar rdar://problem/46099022
Original Reporter peggers (JIRA User)
Type Bug
Status Closed
Resolution Cannot Reproduce

Attachment: Download

Environment

Swift 4.2

Ubuntu 16.04.5 hosted on AWS

Vapor 2.4.5

Additional Detail from JIRA
Votes 0
Component/s Compiler
Labels Bug, 4.2Regression, CompilerCrash
Assignee None
Priority Medium

md5: 0e3c33fe618421f9c9c49a71ac40a387

Issue Description:

I have a program that I deploy onto Ubuntu (Vapor 2.4.5 based server app). Up to this point it's been compiling under Swift 4.1 without issue.

Today, I applied a few patches to my UAT server (hosted on AWS). I noticed Swift got updated to 4.2. Now the Swift build process fails, with the following message:

> swift: /home/buildnode/jenkins/workspace/oss-swift-4.2-package-linux-ubuntu-16_04/llvm/lib/IR/Instructions.cpp:2565: static llvm::CastInst *llvm::CastInst::Create(Instruction::CastOps, llvm::Value *, llvm::Type *, const llvm::Twine &, llvm::Instruction *): Assertion `castIsValid(op, S, Ty) && "Invalid cast!"' failed.

I rolled my server back to its prior state, and no problems the code compiles.

I have attached an extract of the compiler output, where it crashes.

Very happy to help give more information as required.
@belkadan
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If you can't share the entire project, can you at least post the source of the skipWhitespace method it's complaining about?

Can you try compiling with a development snapshot toolchain from https://swift.org/download ? That way we'll know if it's been fixed on the master branch already, and even if it isn't it might have a more useful error message.

@swift-ci
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Comment by Phil Pegden (JIRA)

Hello,

I'm in the final days of release at the moment - so won't have time to try the latest toolchain this week - hopefully next!

In the meantime, it appears that piece of code causing the issue is in a library I'm dependent on:

https://github.com/vapor/leaf/releases/tag/2.0.2

I've attached a file to this Jira with skipWhiteSpace function.

BTW - Am happy to share the whole project? Do you want me to ZIP it and attach it?

Kind regards, Phil

@belkadan
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Ah, if it's the Leaf package that's failing, that might be good enough, as long as you're not compiling with any custom options. Thanks!

@swift-ci
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Comment by Phil Pegden (JIRA)

I do use the command:

vapor build --release

Rather than Swift version...

@eeckstein
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Is this still reproducible with a recent 5.0 snapshot?

@swift-ci
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Comment by Phil Pegden (JIRA)

Hmmm - have tried but found that a few open source components I use are only using swift 3. Thus I'm a bit stuck, as the more recent versions only support Vapor 3, which I have to upgrade to.

So I think this should be closed now - as I have no easy way of testing.

Thank you for your help though.

Phil

@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. compiler The Swift compiler in itself crash Bug: A crash, i.e., an abnormal termination of software regression swift 4.2
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@belkadan @eeckstein @swift-ci @AnthonyLatsis