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[SR-15698] Published sink Abort 6 #4298

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swift-ci opened this issue Jan 7, 2022 · 1 comment
Open

[SR-15698] Published sink Abort 6 #4298

swift-ci opened this issue Jan 7, 2022 · 1 comment
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bug Something isn't working LLDB for Swift swift

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@swift-ci
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swift-ci commented Jan 7, 2022

Previous ID SR-15698
Radar None
Original Reporter Narumi.Inada (JIRA User)
Type Bug

Attachment: Download

Environment

2020 apple silicon MBP13"

macOS 12.0.1

Additional Detail from JIRA
Votes 0
Component/s LLDB for Swift, swift
Labels Bug
Assignee None
Priority Medium

md5: 971fb86c8a4de1e02452129125bde9e1

Issue Description:

Thank you for always helping me out. This is my first report.

I encountered a problem when I extends Published structure in Package.

Probably It is caused by calling sink(receiveValue🙂.

Which is available in playground but package cannot. I attached a package to reproduce it.

// Code to Reproduce. 

import Combine

extension String: Error {}


extension Published {
    func sinkIt() {
        var c = self
        var value: Value? = nil
        _ = c.projectedValue
            .combineLatest(Just(()))
            .sink {
                value = $0.0
            }
        print(value ?? "Thank you")
    }
}

Log:

narumiinada@CSM1 GenericUtils % swift test
Stored value type does not match pointer operand type!
  store %TSq* %97, i8** %8, align 1, !dbg !117
 i8*in function $s7Combine9PublishedV2GUSeRzSERzlE6encode2toys7Encoder_p_tKF
<unknown>:0: error: fatal error encountered during compilation; please submit a bug report (https://swift.org/contributing/#reporting-bugs) and include the project
<unknown>:0: note: Broken function found, compilation aborted!
Please submit a bug report (https://swift.org/contributing/#reporting-bugs) and include the project and the crash backtrace.
Stack dump:
0.  Program arguments: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift-frontend -frontend -c -primary-file "/Users/narumiinada/Desktop/Xcode Projects/Swift Packages/GenericUtils/Sources/GU/Codabilities/Published.swift" "/Users/narumiinada/Desktop/Xcode Projects/Swift Packages/GenericUtils/Sources/GU/Codabilities/Skip.swift" "/Users/narumiinada/Desktop/Xcode Projects/Swift Packages/GenericUtils/Sources/GU/GU.swift" -emit-module-path "/Users/narumiinada/Desktop/Xcode Projects/Swift Packages/GenericUtils/.build/arm64-apple-macosx/debug/GU.build/Codabilities/Published~partial.swiftmodule" -emit-module-doc-path "/Users/narumiinada/Desktop/Xcode Projects/Swift Packages/GenericUtils/.build/arm64-apple-macosx/debug/GU.build/Codabilities/Published~partial.swiftdoc" -emit-module-source-info-path "/Users/narumiinada/Desktop/Xcode Projects/Swift Packages/GenericUtils/.build/arm64-apple-macosx/debug/GU.build/Codabilities/Published~partial.swiftsourceinfo" -emit-dependencies-path "/Users/narumiinada/Desktop/Xcode Projects/Swift Packages/GenericUtils/.build/arm64-apple-macosx/debug/GU.build/Codabilities/Published.d" -emit-reference-dependencies-path "/Users/narumiinada/Desktop/Xcode Projects/Swift Packages/GenericUtils/.build/arm64-apple-macosx/debug/GU.build/Codabilities/Published.swiftdeps" -target arm64-apple-macosx11.0 -Xllvm -aarch64-use-tbi -enable-objc-interop -stack-check -sdk /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX12.1.sdk -I "/Users/narumiinada/Desktop/Xcode Projects/Swift Packages/GenericUtils/.build/arm64-apple-macosx/debug" -I /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib -F /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -color-diagnostics -enable-testing -g -module-cache-path "/Users/narumiinada/Desktop/Xcode Projects/Swift Packages/GenericUtils/.build/arm64-apple-macosx/debug/ModuleCache" -swift-version 5 -Onone -D SWIFT_PACKAGE -D DEBUG -new-driver-path /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift-driver -resource-dir /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift -enable-anonymous-context-mangled-names -module-name GU -target-sdk-version 12.1.0 -parse-as-library -o "/Users/narumiinada/Desktop/Xcode Projects/Swift Packages/GenericUtils/.build/arm64-apple-macosx/debug/GU.build/Codabilities/Published.swift.o" -index-store-path "/Users/narumiinada/Desktop/Xcode Projects/Swift Packages/GenericUtils/.build/arm64-apple-macosx/debug/index/store" -index-system-modules
1.  Apple Swift version 5.5.2 (swiftlang-1300.0.47.5 clang-1300.0.29.30)
2.  
3.  Running pass 'Module Verifier' on function '@"$s7Combine9PublishedV2GUSeRzSERzlE6encode2toys7Encoder_p_tKF"'
Stack dump without symbol names (ensure you have llvm-symbolizer in your PATH or set the environment var `LLVM_SYMBOLIZER_PATH` to point to it):
0  swift-frontend           0x0000000104f4f9c4 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) + 56
1  swift-frontend           0x0000000104f4eacc llvm::sys::RunSignalHandlers() + 128
2  swift-frontend           0x0000000104f50004 SignalHandler(int) + 292
3  libsystem_platform.dylib 0x00000001891244e4 _sigtramp + 56
4  libsystem_pthread.dylib  0x000000018910d15c pthread_kill + 288
5  libsystem_c.dylib        0x000000018904a314 abort + 164
6  swift-frontend           0x0000000100cc3d24 PrettyStackTraceFrontend::~PrettyStackTraceFrontend() + 0
7  swift-frontend           0x0000000104eb3154 llvm::report_fatal_error(llvm::Twine const&, bool) + 260
8  swift-frontend           0x0000000104eb3050 llvm::report_fatal_error(llvm::Twine const&, bool) + 0
9  swift-frontend           0x0000000104e54af8 void llvm::VerifierSupport::CheckFailed<llvm::Instruction*, llvm::MDNode const*>(llvm::Twine const&, llvm::Instruction* const&, llvm::MDNode const* const&) + 0
10 swift-frontend           0x0000000104df8c44 llvm::FPPassManager::runOnFunction(llvm::Function&) + 1164
11 swift-frontend           0x0000000104df81a0 llvm::legacy::FunctionPassManagerImpl::run(llvm::Function&) + 104
12 swift-frontend           0x0000000104dfea60 llvm::legacy::FunctionPassManager::run(llvm::Function&) + 336
13 swift-frontend           0x000000010110afc8 swift::performLLVMOptimizations(swift::IRGenOptions const&, llvm::Module*, llvm::TargetMachine*) + 1500
14 swift-frontend           0x000000010110bf04 swift::performLLVM(swift::IRGenOptions const&, swift::DiagnosticEngine&, llvm::sys::SmartMutex<false>*, llvm::GlobalVariable*, llvm::Module*, llvm::TargetMachine*, llvm::StringRef, swift::UnifiedStatsReporter*) + 2516
15 swift-frontend           0x0000000100cce414 performCompileStepsPostSILGen(swift::CompilerInstance&, std::__1::unique_ptr<swift::SILModule, std::__1::default_delete<swift::SILModule> >, llvm::PointerUnion<swift::ModuleDecl*, swift::SourceFile*>, swift::PrimarySpecificPaths const&, int&, swift::FrontendObserver*) + 3184
16 swift-frontend           0x0000000100cc1574 swift::performFrontend(llvm::ArrayRef<char const*>, char const*, void*, swift::FrontendObserver*) + 6520
17 swift-frontend           0x0000000100c1adf8 main + 932
18 dyld                     0x00000001073610f4 start + 520


error: fatalError
@swift-ci
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swift-ci commented Jan 7, 2022

Comment by Narumi Inada (JIRA)

I had misunderstood that is caused by calling sink.
It was by capturing value in block in sink.

So I prepared generic placeholder class for workaround. This could compile it.

But still I'm not sure why it is available only in playground.

import Combine

extension String: Error {}

final class PlaceHolder<Value> { var value: Value? }

extension Published {
    func sinkIt() {
        var c = self
        var holder: PlaceHolder<Value> = .init()
        _ = c.projectedValue
            .combineLatest(Just(()))
            .sink {
                holder.value = $0.0
            }
        print(holder.value ?? "Thank you")
    }
}

@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
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