[swift-users] Segmentation fault: 11 after updating codebase to Swift 3.0
Evan Maloney
emaloney at gilt.com
Fri Oct 21 11:44:27 CDT 2016
This is definitely not my first time hitting Swift compiler crashes :)
In the past, the stack traces have been helpful, pointing to what code the compiler was working on when it crashed. Unfortunately, this latest crash doesn't fall into that category:
CompileSwift normal x86_64 /Users/emaloney/Documents/Code/CleanroomProject/AppleTart/Sources/iOS/FormBuilder/Row.swift
cd /Users/emaloney/Documents/Code/CleanroomProject/AppleTart
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift -frontend -c -filelist /var/folders/gn/gt76_ktx7w1010xg4v68p3txynz8ws/T/sources-a27d97 -primary-file /Users/emaloney/Documents/Code/CleanroomProject/AppleTart/Sources/iOS/FormBuilder/Row.swift -target x86_64-apple-ios9.0 -enable-objc-interop -sdk /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator10.0.sdk -I /Users/emaloney/Library/Developer/Xcode/DerivedData/AppleTart-gydtadecugkemlbxcybcwsxuynku/Build/Products/Debug-iphonesimulator -F /Users/emaloney/Library/Developer/Xcode/DerivedData/AppleTart-gydtadecugkemlbxcybcwsxuynku/Build/Products/Debug-iphonesimulator -F /Users/emaloney/Documents/Code/CleanroomProject/AppleTart/Carthage/Checkouts/AppleApiDocClients/build/Debug -F /Users/emaloney/Documents/Code/CleanroomProject/AppleTart/Carthage/Checkouts/AppleTapstreamClient/build/Debug -F /Users/emaloney/Documents/Code/CleanroomProject/AppleTart/Carthage/Checkouts/PromiseKit/build/Debug -enable-testing -g -import-objc-header /Users/emaloney/Documents/Code/CleanroomProject/AppleTart/BuildControl/Bridging-Header.h -module-cache-path /Users/emaloney/Library/Developer/Xcode/DerivedData/ModuleCache -D DEBUG -serialize-debugging-options -Xcc -I/Users/emaloney/Library/Developer/Xcode/DerivedData/AppleTart-gydtadecugkemlbxcybcwsxuynku/Build/Intermediates/AppleTart.build/Debug-iphonesimulator/AppleTart-iOS.build/swift-overrides.hmap -Xcc -iquote -Xcc /Users/emaloney/Library/Developer/Xcode/DerivedData/AppleTart-gydtadecugkemlbxcybcwsxuynku/Build/Intermediates/AppleTart.build/Debug-iphonesimulator/AppleTart-iOS.build/AppleTart-generated-files.hmap -Xcc -I/Users/emaloney/Library/Developer/Xcode/DerivedData/AppleTart-gydtadecugkemlbxcybcwsxuynku/Build/Intermediates/AppleTart.build/Debug-iphonesimulator/AppleTart-iOS.build/AppleTart-own-target-headers.hmap -Xcc -I/Users/emaloney/Library/Developer/Xcode/DerivedData/AppleTart-gydtadecugkemlbxcybcwsxuynku/Build/Intermediates/AppleTart.build/Debug-iphonesimulator/AppleTart-iOS.build/AppleTart-all-non-framework-target-headers.hmap -Xcc -ivfsoverlay -Xcc /Users/emaloney/Library/Developer/Xcode/DerivedData/AppleTart-gydtadecugkemlbxcybcwsxuynku/Build/Intermediates/AppleTart.build/all-product-headers.yaml -Xcc -iquote -Xcc /Users/emaloney/Library/Developer/Xcode/DerivedData/AppleTart-gydtadecugkemlbxcybcwsxuynku/Build/Intermediates/AppleTart.build/Debug-iphonesimulator/AppleTart-iOS.build/AppleTart-project-headers.hmap -Xcc -I/Users/emaloney/Library/Developer/Xcode/DerivedData/AppleTart-gydtadecugkemlbxcybcwsxuynku/Build/Products/Debug-iphonesimulator/include -Xcc -I/Users/emaloney/Library/Developer/Xcode/DerivedData/AppleTart-gydtadecugkemlbxcybcwsxuynku/Build/Products/Debug-iphonesimulator/CardIO.framework/Headers -Xcc -I/Users/emaloney/Library/Developer/Xcode/DerivedData/AppleTart-gydtadecugkemlbxcybcwsxuynku/Build/Intermediates/AppleTart.build/Debug-iphonesimulator/AppleTart-iOS.build/DerivedSources/x86_64 -Xcc -I/Users/emaloney/Library/Developer/Xcode/DerivedData/AppleTart-gydtadecugkemlbxcybcwsxuynku/Build/Intermediates/AppleTart.build/Debug-iphonesimulator/AppleTart-iOS.build/DerivedSources -Xcc -DDEBUG=1 -Xcc -working-directory/Users/emaloney/Documents/Code/CleanroomProject/AppleTart -emit-module-doc-path /Users/emaloney/Library/Developer/Xcode/DerivedData/AppleTart-gydtadecugkemlbxcybcwsxuynku/Build/Intermediates/AppleTart.build/Debug-iphonesimulator/AppleTart-iOS.build/Objects-normal/x86_64/Row~partial.swiftdoc -Onone -module-name AppleTart -emit-module-path /Users/emaloney/Library/Developer/Xcode/DerivedData/AppleTart-gydtadecugkemlbxcybcwsxuynku/Build/Intermediates/AppleTart.build/Debug-iphonesimulator/AppleTart-iOS.build/Objects-normal/x86_64/Row~partial.swiftmodule -serialize-diagnostics-path /Users/emaloney/Library/Developer/Xcode/DerivedData/AppleTart-gydtadecugkemlbxcybcwsxuynku/Build/Intermediates/AppleTart.build/Debug-iphonesimulator/AppleTart-iOS.build/Objects-normal/x86_64/Row.dia -emit-dependencies-path /Users/emaloney/Library/Developer/Xcode/DerivedData/AppleTart-gydtadecugkemlbxcybcwsxuynku/Build/Intermediates/AppleTart.build/Debug-iphonesimulator/AppleTart-iOS.build/Objects-normal/x86_64/Row.d -emit-reference-dependencies-path /Users/emaloney/Library/Developer/Xcode/DerivedData/AppleTart-gydtadecugkemlbxcybcwsxuynku/Build/Intermediates/AppleTart.build/Debug-iphonesimulator/AppleTart-iOS.build/Objects-normal/x86_64/Row.swiftdeps -o /Users/emaloney/Library/Developer/Xcode/DerivedData/AppleTart-gydtadecugkemlbxcybcwsxuynku/Build/Intermediates/AppleTart.build/Debug-iphonesimulator/AppleTart-iOS.build/Objects-normal/x86_64/Row.o
0 swift 0x000000010e668b6d PrintStackTraceSignalHandler(void*) + 45
1 swift 0x000000010e6685b6 SignalHandler(int) + 470
2 libsystem_platform.dylib 0x00007fff94a7b52a _sigtramp + 26
3 libsystem_platform.dylib 0x0000000000000004 _sigtramp + 1800948468
4 swift 0x000000010baa58d2 llvm::Value* llvm::function_ref<llvm::Value* (unsigned int)>::callback_fn<swift::irgen::emitArchetypeWitnessTableRef(swift::irgen::IRGenFunction&, swift::CanTypeWrapper<swift::ArchetypeType>, swift::ProtocolDecl*)::$_0>(long, unsigned int) + 530
5 swift 0x000000010bb83600 swift::irgen::emitImpliedWitnessTableRef(swift::irgen::IRGenFunction&, llvm::ArrayRef<swift::irgen::ProtocolEntry>, swift::ProtocolDecl*, llvm::function_ref<llvm::Value* (unsigned int)> const&) + 240
6 swift 0x000000010baa56a7 swift::irgen::emitArchetypeWitnessTableRef(swift::irgen::IRGenFunction&, swift::CanTypeWrapper<swift::ArchetypeType>, swift::ProtocolDecl*) + 247
7 swift 0x000000010bb7f9cd swift::SILWitnessVisitor<(anonymous namespace)::WitnessTableBuilder>::visitProtocolDecl(swift::ProtocolDecl*) + 5997
8 swift 0x000000010bb7d4d7 swift::irgen::IRGenModule::emitSILWitnessTable(swift::SILWitnessTable*) + 503
9 swift 0x000000010baef8ed swift::irgen::IRGenerator::emitGlobalTopLevel() + 2077
10 swift 0x000000010bbb0fcb performIRGeneration(swift::IRGenOptions&, swift::ModuleDecl*, swift::SILModule*, llvm::StringRef, llvm::LLVMContext&, swift::SourceFile*, unsigned int) + 1259
11 swift 0x000000010ba7f1c7 performCompile(swift::CompilerInstance&, swift::CompilerInvocation&, llvm::ArrayRef<char const*>, int&, swift::FrontendObserver*) + 23687
12 swift 0x000000010ba77265 swift::performFrontend(llvm::ArrayRef<char const*>, char const*, void*, swift::FrontendObserver*) + 17029
13 swift 0x000000010ba3482d main + 8685
14 libdyld.dylib 0x00007fff8ab5c5ad start + 1
Stack dump:
0. Program arguments: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift -frontend -c -filelist /var/folders/gn/gt76_ktx7w1010xg4v68p3txynz8ws/T/sources-a27d97 -primary-file /Users/emaloney/Documents/Code/CleanroomProject/AppleTart/Sources/iOS/FormBuilder/Row.swift -target x86_64-apple-ios9.0 -enable-objc-interop -sdk /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator10.0.sdk -I /Users/emaloney/Library/Developer/Xcode/DerivedData/AppleTart-gydtadecugkemlbxcybcwsxuynku/Build/Products/Debug-iphonesimulator -F /Users/emaloney/Library/Developer/Xcode/DerivedData/AppleTart-gydtadecugkemlbxcybcwsxuynku/Build/Products/Debug-iphonesimulator -F /Users/emaloney/Documents/Code/CleanroomProject/AppleTart/Carthage/Checkouts/AppleApiDocClients/build/Debug -F /Users/emaloney/Documents/Code/CleanroomProject/AppleTart/Carthage/Checkouts/AppleTapstreamClient/build/Debug -F /Users/emaloney/Documents/Code/CleanroomProject/AppleTart/Carthage/Checkouts/PromiseKit/build/Debug -enable-testing -g -import-objc-header /Users/emaloney/Documents/Code/CleanroomProject/AppleTart/BuildControl/Bridging-Header.h -module-cache-path /Users/emaloney/Library/Developer/Xcode/DerivedData/ModuleCache -D DEBUG -serialize-debugging-options -Xcc -I/Users/emaloney/Library/Developer/Xcode/DerivedData/AppleTart-gydtadecugkemlbxcybcwsxuynku/Build/Intermediates/AppleTart.build/Debug-iphonesimulator/AppleTart-iOS.build/swift-overrides.hmap -Xcc -iquote -Xcc /Users/emaloney/Library/Developer/Xcode/DerivedData/AppleTart-gydtadecugkemlbxcybcwsxuynku/Build/Intermediates/AppleTart.build/Debug-iphonesimulator/AppleTart-iOS.build/AppleTart-generated-files.hmap -Xcc -I/Users/emaloney/Library/Developer/Xcode/DerivedData/AppleTart-gydtadecugkemlbxcybcwsxuynku/Build/Intermediates/AppleTart.build/Debug-iphonesimulator/AppleTart-iOS.build/AppleTart-own-target-headers.hmap -Xcc -I/Users/emaloney/Library/Developer/Xcode/DerivedData/AppleTart-gydtadecugkemlbxcybcwsxuynku/Build/Intermediates/AppleTart.build/Debug-iphonesimulator/AppleTart-iOS.build/AppleTart-all-non-framework-target-headers.hmap -Xcc -ivfsoverlay -Xcc /Users/emaloney/Library/Developer/Xcode/DerivedData/AppleTart-gydtadecugkemlbxcybcwsxuynku/Build/Intermediates/AppleTart.build/all-product-headers.yaml -Xcc -iquote -Xcc /Users/emaloney/Library/Developer/Xcode/DerivedData/AppleTart-gydtadecugkemlbxcybcwsxuynku/Build/Intermediates/AppleTart.build/Debug-iphonesimulator/AppleTart-iOS.build/AppleTart-project-headers.hmap -Xcc -I/Users/emaloney/Library/Developer/Xcode/DerivedData/AppleTart-gydtadecugkemlbxcybcwsxuynku/Build/Products/Debug-iphonesimulator/include -Xcc -I/Users/emaloney/Library/Developer/Xcode/DerivedData/AppleTart-gydtadecugkemlbxcybcwsxuynku/Build/Products/Debug-iphonesimulator/CardIO.framework/Headers -Xcc -I/Users/emaloney/Library/Developer/Xcode/DerivedData/AppleTart-gydtadecugkemlbxcybcwsxuynku/Build/Intermediates/AppleTart.build/Debug-iphonesimulator/AppleTart-iOS.build/DerivedSources/x86_64 -Xcc -I/Users/emaloney/Library/Developer/Xcode/DerivedData/AppleTart-gydtadecugkemlbxcybcwsxuynku/Build/Intermediates/AppleTart.build/Debug-iphonesimulator/AppleTart-iOS.build/DerivedSources -Xcc -DDEBUG=1 -Xcc -working-directory/Users/emaloney/Documents/Code/CleanroomProject/AppleTart -emit-module-doc-path /Users/emaloney/Library/Developer/Xcode/DerivedData/AppleTart-gydtadecugkemlbxcybcwsxuynku/Build/Intermediates/AppleTart.build/Debug-iphonesimulator/AppleTart-iOS.build/Objects-normal/x86_64/Row~partial.swiftdoc -Onone -module-name AppleTart -emit-module-path /Users/emaloney/Library/Developer/Xcode/DerivedData/AppleTart-gydtadecugkemlbxcybcwsxuynku/Build/Intermediates/AppleTart.build/Debug-iphonesimulator/AppleTart-iOS.build/Objects-normal/x86_64/Row~partial.swiftmodule -serialize-diagnostics-path /Users/emaloney/Library/Developer/Xcode/DerivedData/AppleTart-gydtadecugkemlbxcybcwsxuynku/Build/Intermediates/AppleTart.build/Debug-iphonesimulator/AppleTart-iOS.build/Objects-normal/x86_64/Row.dia -emit-dependencies-path /Users/emaloney/Library/Developer/Xcode/DerivedData/AppleTart-gydtadecugkemlbxcybcwsxuynku/Build/Intermediates/AppleTart.build/Debug-iphonesimulator/AppleTart-iOS.build/Objects-normal/x86_64/Row.d -emit-reference-dependencies-path /Users/emaloney/Library/Developer/Xcode/DerivedData/AppleTart-gydtadecugkemlbxcybcwsxuynku/Build/Intermediates/AppleTart.build/Debug-iphonesimulator/AppleTart-iOS.build/Objects-normal/x86_64/Row.swiftdeps -o /Users/emaloney/Library/Developer/Xcode/DerivedData/AppleTart-gydtadecugkemlbxcybcwsxuynku/Build/Intermediates/AppleTart.build/Debug-iphonesimulator/AppleTart-iOS.build/Objects-normal/x86_64/Row.o
> On Oct 21, 2016, at 12:41 PM, Jon Shier <jon at jonshier.com> wrote:
>
> With Swift 3 I’ve found these crashes to be indicative of an underlying source issue rather than something random in the compiler. When you get the crash, can you get the backtrace in the Xcode build log? Sometimes that has clues about what it was doing when it crashed. A lot of the time when the crash is during the parsing or SIL generation for one of your functions, it will note it and you can take a look, as there may be a type mismatch.
>
>
>
> Jon
>
>> On Oct 21, 2016, at 12:26 PM, Evan Maloney via swift-users <swift-users at swift.org> wrote:
>>
>> After a gargantuan effort updating our entire codebase to Swift 3.0, we are now being greeted with "Segmentation fault: 11" compiler crash whenever attempting to build.
>>
>> The issue seems to be related to generics, and sounds similar to this issue:
>>
>> http://stackoverflow.com/questions/39426535/segmentation-fault-11-xcode-8-swift-3-after-using-notificationcenter/39426812
>>
>> I've filed a bug report that includes our project codebase, which triggers the issue 100% of the time:
>>
>> rdar://problem/28890409
>>
>> The usual work-around of turning off Whole Module Optimization (which has gotten around a lot of compiler crashes in the past) does not work here.
>>
>> Unfortunately, this code is in such a tangle of generics that undoing it is not going to be simple. Until a new version of Xcode ships, we're pretty much blocked from using Swift 3.0 unless another work-around is possible.
>> _______________________________________________
>> swift-users mailing list
>> swift-users at swift.org
>> https://lists.swift.org/mailman/listinfo/swift-users
>
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