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[SR-13589] Assertion failure in PointerUnion: (is<T>() && "Invalid accessor called") #56024

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swift-ci opened this issue Sep 23, 2020 · 1 comment
Closed

[SR-13589] Assertion failure in PointerUnion: (is<T>() && "Invalid accessor called") #56024

swift-ci opened this issue Sep 23, 2020 · 1 comment
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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

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@swift-ci
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Previous ID SR-13589
Radar rdar://problem/69440430
Original Reporter Olbo (JIRA User)
Type Bug
Additional Detail from JIRA
Votes 0
Component/s Compiler
Labels Bug, CompilerCrash
Assignee None
Priority Medium

md5: 9bf2305ed0b70fc2bb739f4599005aa4

Issue Description:

Tested on Xcode 12 Swift 5.3 and Development Toolchain 2020-09-22.

Segmentation fault: 11 when a function and variable both return Never and have the same name.

Assertion failed: (is<T>() && "Invalid accessor called"), function get, file /Users/buildnode/jenkins/workspace/oss-swift-package-osx/llvm-project/llvm/include/llvm/ADT/PointerUnion.h, line 195.
PLEASE submit a bug report to https://bugs.llvm.org/ and include the crash backtrace.
Stack dump:
0.  Program arguments: /Library/Developer/Toolchains/swift-DEVELOPMENT-SNAPSHOT-2020-09-22-a.xctoolchain/usr/bin/swift-frontend -frontend -c -primary-file /tmp/MyLibrary/Sources/Filling/EmptyDecoder.swift -emit-module-path /Users/oliver/Library/Developer/Xcode/DerivedData/MyLibrary-bcumsulgohwueocqjsbfhkvnieap/Build/Intermediates.noindex/Enamel.build/Debug/Filling.build/Objects-normal/x86_64/EmptyDecoder~partial.swiftmodule -emit-module-doc-path /Users/oliver/Library/Developer/Xcode/DerivedData/MyLibrary-bcumsulgohwueocqjsbfhkvnieap/Build/Intermediates.noindex/Enamel.build/Debug/Filling.build/Objects-normal/x86_64/EmptyDecoder~partial.swiftdoc -emit-module-source-info-path /Users/oliver/Library/Developer/Xcode/DerivedData/MyLibrary-bcumsulgohwueocqjsbfhkvnieap/Build/Intermediates.noindex/Enamel.build/Debug/Filling.build/Objects-normal/x86_64/EmptyDecoder~partial.swiftsourceinfo -serialize-diagnostics-path /Users/oliver/Library/Developer/Xcode/DerivedData/MyLibrary-bcumsulgohwueocqjsbfhkvnieap/Build/Intermediates.noindex/Enamel.build/Debug/Filling.build/Objects-normal/x86_64/EmptyDecoder.dia -emit-dependencies-path /Users/oliver/Library/Developer/Xcode/DerivedData/MyLibrary-bcumsulgohwueocqjsbfhkvnieap/Build/Intermediates.noindex/Enamel.build/Debug/Filling.build/Objects-normal/x86_64/EmptyDecoder.d -emit-reference-dependencies-path /Users/oliver/Library/Developer/Xcode/DerivedData/MyLibrary-bcumsulgohwueocqjsbfhkvnieap/Build/Intermediates.noindex/Enamel.build/Debug/Filling.build/Objects-normal/x86_64/EmptyDecoder.swiftdeps -target x86_64-apple-macos10.10 -enable-objc-interop -sdk /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.15.sdk -I /Users/oliver/Library/Developer/Xcode/DerivedData/MyLibrary-bcumsulgohwueocqjsbfhkvnieap/Build/Products/Debug -I /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib -F /Users/oliver/Library/Developer/Xcode/DerivedData/MyLibrary-bcumsulgohwueocqjsbfhkvnieap/Build/Products/Debug -F /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -enable-testing -g -module-cache-path /Users/oliver/Library/Developer/Xcode/DerivedData/ModuleCache.noindex -swift-version 5 -enforce-exclusivity=checked -Onone -D SWIFT_PACKAGE -D DEBUG -D Xcode -serialize-debugging-options -enable-anonymous-context-mangled-names -Xcc -I/Users/oliver/Library/Developer/Xcode/DerivedData/MyLibrary-bcumsulgohwueocqjsbfhkvnieap/Build/Intermediates.noindex/Enamel.build/Debug/Filling.build/swift-overrides.hmap -Xcc -I/Users/oliver/Library/Developer/Xcode/DerivedData/MyLibrary-bcumsulgohwueocqjsbfhkvnieap/Build/Products/Debug/include -Xcc -I/Users/oliver/Library/Developer/Xcode/DerivedData/MyLibrary-bcumsulgohwueocqjsbfhkvnieap/Build/Intermediates.noindex/Enamel.build/Debug/Filling.build/DerivedSources-normal/x86_64 -Xcc -I/Users/oliver/Library/Developer/Xcode/DerivedData/MyLibrary-bcumsulgohwueocqjsbfhkvnieap/Build/Intermediates.noindex/Enamel.build/Debug/Filling.build/DerivedSources/x86_64 -Xcc -I/Users/oliver/Library/Developer/Xcode/DerivedData/MyLibrary-bcumsulgohwueocqjsbfhkvnieap/Build/Intermediates.noindex/Enamel.build/Debug/Filling.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG=1 -Xcc -working-directory/tmp/MyLibrary -target-sdk-version 10.15.6 -parse-as-library -module-name Filling -o /Users/oliver/Library/Developer/Xcode/DerivedData/MyLibrary-bcumsulgohwueocqjsbfhkvnieap/Build/Intermediates.noindex/Enamel.build/Debug/Filling.build/Objects-normal/x86_64/EmptyDecoder.o -index-store-path /Users/oliver/Library/Developer/Xcode/DerivedData/MyLibrary-bcumsulgohwueocqjsbfhkvnieap/Index/DataStore -index-system-modules 
1.  Apple Swift version 5.3-dev (LLVM 2685951d827b16e, Swift ec72db1d8ab63fa)
2.  While evaluating request ASTLoweringRequest(Lowering AST to SIL for file "/tmp/MyLibrary/Sources/Filling/EmptyDecoder.swift")
3.  While silgen emitFunction SIL function "@$s7Filling4TestV3foos24UnkeyedDecodingContainer_pyKF".
 for 'foo()' (at /tmp/MyLibrary/Sources/Filling/EmptyDecoder.swift:19:12)
0  swift-frontend           0x0000000106bff435 llvm::sys::PrintStackTrace(llvm::raw_ostream&) + 37
1  swift-frontend           0x0000000106bfe695 llvm::sys::RunSignalHandlers() + 85
2  swift-frontend           0x0000000106bffa06 SignalHandler(int) + 262
3  libsystem_platform.dylib 0x00007fff687195fd _sigtramp + 29
4  libsystem_platform.dylib 0x000000010fabe107 _sigtramp + 18446603343321778983
5  libsystem_c.dylib        0x00007fff685ef808 abort + 120
6  libsystem_c.dylib        0x00007fff685eeac6 err + 0
7  swift-frontend           0x0000000106da7923 swift::Lowering::SILGenModule::useConformance(swift::ProtocolConformanceRef) (.cold.1) + 35
8  swift-frontend           0x000000010295bb20 swift::Lowering::SILGenModule::useConformance(swift::ProtocolConformanceRef) + 544
9  swift-frontend           0x0000000102916fdc swift::Lowering::SILGenFunction::emitExistentialErasure(swift::SILLocation, swift::CanType, swift::Lowering::TypeLowering const&, swift::Lowering::TypeLowering const&, llvm::ArrayRef<swift::ProtocolConformanceRef>, swift::Lowering::SGFContext, llvm::function_ref<swift::Lowering::ManagedValue (swift::Lowering::SGFContext)>, bool) + 108
10 swift-frontend           0x000000010294042a swift::ASTVisitor<(anonymous namespace)::RValueEmitter, swift::Lowering::RValue, void, void, void, void, void, swift::Lowering::SGFContext>::visit(swift::Expr*, swift::Lowering::SGFContext) + 25386
11 swift-frontend           0x000000010292c535 swift::Lowering::SILGenFunction::emitExprInto(swift::Expr*, swift::Lowering::Initialization*, llvm::Optional<swift::SILLocation>) + 309
12 swift-frontend           0x00000001029ae1b6 swift::Lowering::SILGenFunction::emitReturnExpr(swift::SILLocation, swift::Expr*) + 758
13 swift-frontend           0x00000001029aa5b4 swift::ASTVisitor<(anonymous namespace)::StmtEmitter, void, void, void, void, void, void>::visit(swift::Stmt*) + 6484
14 swift-frontend           0x00000001029aea96 (anonymous namespace)::StmtEmitter::visitBraceStmt(swift::BraceStmt*) + 326
15 swift-frontend           0x00000001029a8c55 swift::Lowering::SILGenFunction::emitStmt(swift::Stmt*) + 21
16 swift-frontend           0x000000010295506c swift::Lowering::SILGenFunction::emitFunction(swift::FuncDecl*) + 348
17 swift-frontend           0x00000001028c7997 swift::Lowering::SILGenModule::emitFunctionDefinition(swift::SILDeclRef, swift::SILFunction*) + 5767
18 swift-frontend           0x00000001028c95e4 emitOrDelayFunction(swift::Lowering::SILGenModule&, swift::SILDeclRef, bool) + 228
19 swift-frontend           0x00000001028c62fa swift::Lowering::SILGenModule::emitFunction(swift::FuncDecl*) + 122
20 swift-frontend           0x00000001029b8312 swift::ASTVisitor<(anonymous namespace)::SILGenType, void, void, void, void, void, void>::visit(swift::Decl*) + 626
21 swift-frontend           0x00000001029b53eb (anonymous namespace)::SILGenType::emitType() + 715
22 swift-frontend           0x00000001029b5119 swift::Lowering::SILGenModule::visitNominalTypeDecl(swift::NominalTypeDecl*) + 25
23 swift-frontend           0x00000001028cbaa7 swift::ASTLoweringRequest::evaluate(swift::Evaluator&, swift::ASTLoweringDescriptor) const + 1959
24 swift-frontend           0x00000001029a8750 swift::SimpleRequest<swift::ASTLoweringRequest, std::__1::unique_ptr<swift::SILModule, std::__1::default_delete<swift::SILModule> > (swift::ASTLoweringDescriptor), (swift::RequestFlags)9>::evaluateRequest(swift::ASTLoweringRequest const&, swift::Evaluator&) + 128
25 swift-frontend           0x00000001028d0611 llvm::Expected<swift::ASTLoweringRequest::OutputType> swift::Evaluator::getResultUncached<swift::ASTLoweringRequest>(swift::ASTLoweringRequest const&) + 497
26 swift-frontend           0x00000001028ccfbe llvm::Expected<swift::ASTLoweringRequest::OutputType> swift::Evaluator::operator()<swift::ASTLoweringRequest, (void*)0>(swift::ASTLoweringRequest const&) + 110
27 swift-frontend           0x00000001028cd0c3 swift::performASTLowering(swift::FileUnit&, swift::Lowering::TypeConverter&, swift::SILOptions const&) + 147
28 swift-frontend           0x000000010255df02 performCompileStepsPostSema(swift::CompilerInstance&, int&, swift::FrontendObserver*) + 226
29 swift-frontend           0x000000010255640b swift::performFrontend(llvm::ArrayRef<char const*>, char const*, void*, swift::FrontendObserver*) + 4827
30 swift-frontend           0x00000001024eed62 main + 866
31 libdyld.dylib            0x00007fff68520cc9 start + 1
32 libdyld.dylib            0x0000000000000048 start + 18446603338765955968

Minimal reproduction:

public var UNIMPLEMENTED: Never { fatalError("UNIMPLEMENTED") }


public func UNIMPLEMENTED(
    function: String = #function,
    file: StaticString = #file,
    line: UInt = #line
) -> Never {
    fatalError("UNIMPLEMENTED ← \(function)", file: file, line: line)
}


public struct Test {
    public func foo() throws -> UnkeyedDecodingContainer {
        UNIMPLEMENTED()
    }
}
@typesanitizer
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@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
AnthonyLatsis added a commit to AnthonyLatsis/swift that referenced this issue May 1, 2022
@AnthonyLatsis
Add regression test for apple#56024 crasher
d470eaa
swift-ci added a commit that referenced this issue May 24, 2022
@swift-ci
Merge pull request #58562 from AnthonyLatsis/sr13589
997ace4 
Add regression test for #56024 crasher
@AnthonyLatsis AnthonyLatsis added the crash Bug: A crash, i.e., an abnormal termination of software label Dec 12, 2022
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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
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@typesanitizer @swift-ci @AnthonyLatsis