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[SR-6665] Compiler crash with "top-level value not found" #49214

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lilyball mannequin opened this issue Dec 27, 2017 · 1 comment
Closed

[SR-6665] Compiler crash with "top-level value not found" #49214

lilyball mannequin opened this issue Dec 27, 2017 · 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 serialization Area → compiler: Serialization & deserialization

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@lilyball
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Mannequin

lilyball mannequin commented Dec 27, 2017

Previous ID SR-6665
Radar None
Original Reporter @lilyball
Type Bug
Status Resolved
Resolution Duplicate

Attachment: Download

Environment

Xcode 9.2 (9C40b)

Apple Swift version 4.0.3 (swiftlang-900.0.74.1 clang-900.0.39.2)
Target: x86_64-apple-macosx10.9

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

md5: 62e9e28282fa798288f179b0bd8b8f2c

duplicates:

  • SR-2370 Compiler crash when subclassing in a different file a class which conforms to a fileprivate protocol

Issue Description:

The compiler crashes if you have a class that inherits from a class in a different file, where the parent class conforms to a private protocol.

For example:

// Parent.swift
public class Parent: PrivateProto {
}

private protocol PrivateProto {
}
// Child.swift
public class Child: Parent {
}

I'm doing this in a framework target. I haven't tried in an app target. Similarly I'm compiling this in Debug mode; I'm assuming WMO would "fix" this issue but I haven't tested.

<unknown>:0: error: fatal error encountered while reading from module 'CrashTest'; please file a bug report with your project and the crash log

*** DESERIALIZATION FAILURE (please include this section in any bug report) ***
top-level value not found
Cross-reference to module 'CrashTest'
... PrivateProto

0  swift                    0x000000010af9d36a PrintStackTraceSignalHandler(void*) + 42
1  swift                    0x000000010af9c7a6 SignalHandler(int) + 662
2  libsystem_platform.dylib 0x00007fff54737f5a _sigtramp + 26
3  libsystem_platform.dylib 0x0000000119380558 _sigtramp + 3301213720
4  libsystem_c.dylib        0x00007fff54562312 abort + 127
5  swift                    0x0000000108694231 swift::ModuleFile::fatal(llvm::Error) + 1569
6  swift                    0x00000001086946e2 swift::ModuleFile::getDecl(llvm::PointerEmbeddedInt<unsigned int, 31>, llvm::Optional<swift::DeclContext*>) + 130
7  swift                    0x00000001086aa2f1 swift::ModuleFile::readConformance(llvm::BitstreamCursor&, swift::GenericEnvironment*) + 625
8  swift                    0x00000001086aa739 swift::ModuleFile::readConformance(llvm::BitstreamCursor&, swift::GenericEnvironment*) + 1721
9  swift                    0x00000001086ad75c swift::ModuleFile::loadAllConformances(swift::Decl const*, unsigned long long, llvm::SmallVectorImpl<swift::ProtocolConformance*>&) + 300
10 swift                    0x0000000108aef6dc swift::ConformanceLookupTable::updateLookupTable(swift::NominalTypeDecl*, swift::ConformanceLookupTable::ConformanceStage, swift::LazyResolver*) + 1068
11 swift                    0x0000000108aef3a7 swift::ConformanceLookupTable::updateLookupTable(swift::NominalTypeDecl*, swift::ConformanceLookupTable::ConformanceStage, swift::LazyResolver*) + 247
12 swift                    0x0000000108aef41c swift::ConformanceLookupTable::updateLookupTable(swift::NominalTypeDecl*, swift::ConformanceLookupTable::ConformanceStage, swift::LazyResolver*) + 364
13 swift                    0x0000000108af3f57 swift::ConformanceLookupTable::getAllProtocols(swift::NominalTypeDecl*, swift::LazyResolver*, llvm::SmallVectorImpl<swift::ProtocolDecl*>&) + 39
14 swift                    0x0000000108277ebd (anonymous namespace)::NominalTypeWalker::walkToDeclPre(swift::Decl*) + 205
15 swift                    0x0000000108ada218 (anonymous namespace)::Traversal::doIt(swift::Decl*) + 280
16 swift                    0x000000010835c24f swift::SILPassManager::SILPassManager(swift::SILModule*, llvm::StringRef) + 1807
17 swift                    0x000000010836288f swift::runSILDiagnosticPasses(swift::SILModule&) + 175
18 swift                    0x00000001078fa03f performCompile(swift::CompilerInstance&, swift::CompilerInvocation&, llvm::ArrayRef<char const*>, int&, swift::FrontendObserver*, swift::UnifiedStatsReporter*) + 13791
19 swift                    0x00000001078f51f4 swift::performFrontend(llvm::ArrayRef<char const*>, char const*, void*, swift::FrontendObserver*) + 7716
20 swift                    0x00000001078a9e78 main + 12248
21 libdyld.dylib            0x00007fff544b6115 start + 1
Stack dump:
0.  Program arguments: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift -frontend -emit-module /Users/kevin/Library/Developer/Xcode/DerivedData/CrashTest-aednlmfdnpuqmgcvxjgxdsevfwiu/Build/Intermediates.noindex/CrashTest.build/Debug-iphonesimulator/CrashTest.build/Objects-normal/x86_64/Two~partial.swiftmodule /Users/kevin/Library/Developer/Xcode/DerivedData/CrashTest-aednlmfdnpuqmgcvxjgxdsevfwiu/Build/Intermediates.noindex/CrashTest.build/Debug-iphonesimulator/CrashTest.build/Objects-normal/x86_64/One~partial.swiftmodule -parse-as-library -target x86_64-apple-ios11.2 -enable-objc-interop -sdk /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator11.2.sdk -I /Users/kevin/Library/Developer/Xcode/DerivedData/CrashTest-aednlmfdnpuqmgcvxjgxdsevfwiu/Build/Products/Debug-iphonesimulator -F /Users/kevin/Library/Developer/Xcode/DerivedData/CrashTest-aednlmfdnpuqmgcvxjgxdsevfwiu/Build/Products/Debug-iphonesimulator -enable-testing -g -import-underlying-module -module-cache-path /Users/kevin/Library/Developer/Xcode/DerivedData/ModuleCache -swift-version 4 -enforce-exclusivity=checked -D DEBUG -serialize-debugging-options -report-errors-to-debugger -Xcc -I/Users/kevin/Library/Developer/Xcode/DerivedData/CrashTest-aednlmfdnpuqmgcvxjgxdsevfwiu/Build/Intermediates.noindex/CrashTest.build/Debug-iphonesimulator/CrashTest.build/swift-overrides.hmap -Xcc -iquote -Xcc /Users/kevin/Library/Developer/Xcode/DerivedData/CrashTest-aednlmfdnpuqmgcvxjgxdsevfwiu/Build/Intermediates.noindex/CrashTest.build/Debug-iphonesimulator/CrashTest.build/CrashTest-generated-files.hmap -Xcc -I/Users/kevin/Library/Developer/Xcode/DerivedData/CrashTest-aednlmfdnpuqmgcvxjgxdsevfwiu/Build/Intermediates.noindex/CrashTest.build/Debug-iphonesimulator/CrashTest.build/CrashTest-own-target-headers.hmap -Xcc -I/Users/kevin/Library/Developer/Xcode/DerivedData/CrashTest-aednlmfdnpuqmgcvxjgxdsevfwiu/Build/Intermediates.noindex/CrashTest.build/Debug-iphonesimulator/CrashTest.build/CrashTest-all-non-framework-target-headers.hmap -Xcc -ivfsoverlay -Xcc /Users/kevin/Library/Developer/Xcode/DerivedData/CrashTest-aednlmfdnpuqmgcvxjgxdsevfwiu/Build/Intermediates.noindex/CrashTest.build/all-product-headers.yaml -Xcc -iquote -Xcc /Users/kevin/Library/Developer/Xcode/DerivedData/CrashTest-aednlmfdnpuqmgcvxjgxdsevfwiu/Build/Intermediates.noindex/CrashTest.build/Debug-iphonesimulator/CrashTest.build/CrashTest-project-headers.hmap -Xcc -I/Users/kevin/Library/Developer/Xcode/DerivedData/CrashTest-aednlmfdnpuqmgcvxjgxdsevfwiu/Build/Products/Debug-iphonesimulator/include -Xcc -I/Users/kevin/Library/Developer/Xcode/DerivedData/CrashTest-aednlmfdnpuqmgcvxjgxdsevfwiu/Build/Intermediates.noindex/CrashTest.build/Debug-iphonesimulator/CrashTest.build/DerivedSources/x86_64 -Xcc -I/Users/kevin/Library/Developer/Xcode/DerivedData/CrashTest-aednlmfdnpuqmgcvxjgxdsevfwiu/Build/Intermediates.noindex/CrashTest.build/Debug-iphonesimulator/CrashTest.build/DerivedSources -Xcc -DDEBUG=1 -Xcc -ivfsoverlay -Xcc /Users/kevin/Library/Developer/Xcode/DerivedData/CrashTest-aednlmfdnpuqmgcvxjgxdsevfwiu/Build/Intermediates.noindex/CrashTest.build/Debug-iphonesimulator/CrashTest.build/unextended-module-overlay.yaml -Xcc -working-directory/Users/kevin/Desktop/CrashTest -emit-module-doc-path /Users/kevin/Library/Developer/Xcode/DerivedData/CrashTest-aednlmfdnpuqmgcvxjgxdsevfwiu/Build/Intermediates.noindex/CrashTest.build/Debug-iphonesimulator/CrashTest.build/Objects-normal/x86_64/CrashTest.swiftdoc -module-name CrashTest -emit-objc-header-path /Users/kevin/Library/Developer/Xcode/DerivedData/CrashTest-aednlmfdnpuqmgcvxjgxdsevfwiu/Build/Intermediates.noindex/CrashTest.build/Debug-iphonesimulator/CrashTest.build/Objects-normal/x86_64/CrashTest-Swift.h -o /Users/kevin/Library/Developer/Xcode/DerivedData/CrashTest-aednlmfdnpuqmgcvxjgxdsevfwiu/Build/Intermediates.noindex/CrashTest.build/Debug-iphonesimulator/CrashTest.build/Objects-normal/x86_64/CrashTest.swiftmodule 
1.  While loading conformances for 'Two' in module 'CrashTest'
2.  While reading inherited conformance for type 'Two'
3.  While cross-referencing conformance for 'One' in module 'CrashTest'
@lilyball
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lilyball mannequin commented Dec 27, 2017

I just came up with a really tiny reproduction case. I'm going to replace the attachment and description.

@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
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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 serialization Area → compiler: Serialization & deserialization
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