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[SR-2114] Compiler Segfault Regression (Xcode 8 beta 2 to 3) #44722

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stephencelis opened this issue Jul 19, 2016 · 4 comments
Closed

[SR-2114] Compiler Segfault Regression (Xcode 8 beta 2 to 3) #44722

stephencelis opened this issue Jul 19, 2016 · 4 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 3.0

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@stephencelis
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Previous ID SR-2114
Radar None
Original Reporter @stephencelis
Type Bug
Environment

macOS Sierra beta 3, Xcode 8 beta 3, Swift 3

Additional Detail from JIRA
Votes 0
Component/s Compiler
Labels Bug, 3.0Regression, CompilerCrash
Assignee None
Priority Medium

md5: 1a7bf6e483927557fa28c5920328bec5

Issue Description:

The following repo built fine in Xcode 8 beta 2 (besides an issue with generic typealiases on a branch, reported here: https://bugs.swift.org/browse/SR-2076), but in Xcode 8 beta 3 the compiler quickly segfaults:

https://github.com/stephencelis/Formatting

0  swift                    0x0000000104ce728b llvm::sys::PrintStackTrace(llvm::raw_ostream&) + 43
1  swift                    0x0000000104ce6576 llvm::sys::RunSignalHandlers() + 70
2  swift                    0x0000000104ce78df SignalHandler(int) + 287
3  libsystem_platform.dylib 0x0000000107d4cd7a _sigtramp + 26
4  libsystem_platform.dylib 000000000000000000 _sigtramp + 4163580576
5  swift                    0x0000000102bd47dd swift::ModuleFile::getType(llvm::PointerEmbeddedInt<unsigned int, 31>) + 2237
6  swift                    0x0000000102bd47a8 swift::ModuleFile::getType(llvm::PointerEmbeddedInt<unsigned int, 31>) + 2184
7  swift                    0x0000000102bd535c swift::ModuleFile::getType(llvm::PointerEmbeddedInt<unsigned int, 31>) + 5180
8  swift                    0x0000000102bd47bd swift::ModuleFile::getType(llvm::PointerEmbeddedInt<unsigned int, 31>) + 2205
9  swift                    0x0000000102bd49ba swift::ModuleFile::getType(llvm::PointerEmbeddedInt<unsigned int, 31>) + 2714
10 swift                    0x0000000102bd2e57 swift::ModuleFile::getDecl(llvm::PointerEmbeddedInt<unsigned int, 31>, llvm::Optional<swift::DeclContext*>) + 26647
11 swift                    0x0000000102bf3c7b swift::ModuleFile::getTopLevelDecls(llvm::SmallVectorImpl<swift::Decl*>&) + 971
12 swift                    0x0000000102f2c58f swift::ModuleDecl::getTopLevelDecls(llvm::SmallVectorImpl<swift::Decl*>&) const + 63
13 swift                    0x000000010290647e swift::ClassHierarchyAnalysis::init() + 78
14 swift                    0x00000001028fbe61 swift::createClassHierarchyAnalysis(swift::SILModule*) + 129
15 swift                    0x000000010297f889 swift::SILPassManager::SILPassManager(swift::SILModule*, llvm::StringRef) + 361
16 swift                    0x0000000102988f36 swift::runSILDiagnosticPasses(swift::SILModule&) + 118
17 swift                    0x000000010272fcc7 performCompile(swift::CompilerInstance&, swift::CompilerInvocation&, llvm::ArrayRef<char const*>, int&, swift::FrontendObserver*) + 11495
18 swift                    0x000000010272c0d2 swift::performFrontend(llvm::ArrayRef<char const*>, char const*, void*, swift::FrontendObserver*) + 2898
19 swift                    0x00000001026fa154 main + 2884
20 libdyld.dylib            0x0000000107a27255 start + 1
21 libdyld.dylib            0x000000000000002d start + 4166880729
Stack dump:
0.  Program arguments: /Applications/Xcode-beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift -frontend -emit-module /Users/stephencelis/Library/Developer/Xcode/DerivedData/Formatting-aqzhjqxlluahchdgutyrqitfpstv/Build/Intermediates/Formatting.build/Debug-iphonesimulator/Formatting.build/Objects-normal/x86_64/Date~partial.swiftmodule /Users/stephencelis/Library/Developer/Xcode/DerivedData/Formatting-aqzhjqxlluahchdgutyrqitfpstv/Build/Intermediates/Formatting.build/Debug-iphonesimulator/Formatting.build/Objects-normal/x86_64/Formatter~partial.swiftmodule /Users/stephencelis/Library/Developer/Xcode/DerivedData/Formatting-aqzhjqxlluahchdgutyrqitfpstv/Build/Intermediates/Formatting.build/Debug-iphonesimulator/Formatting.build/Objects-normal/x86_64/Uncurry~partial.swiftmodule /Users/stephencelis/Library/Developer/Xcode/DerivedData/Formatting-aqzhjqxlluahchdgutyrqitfpstv/Build/Intermediates/Formatting.build/Debug-iphonesimulator/Formatting.build/Objects-normal/x86_64/Formatters~partial.swiftmodule /Users/stephencelis/Library/Developer/Xcode/DerivedData/Formatting-aqzhjqxlluahchdgutyrqitfpstv/Build/Intermediates/Formatting.build/Debug-iphonesimulator/Formatting.build/Objects-normal/x86_64/Operators~partial.swiftmodule -parse-as-library -target x86_64-apple-ios10.0 -enable-objc-interop -sdk /Applications/Xcode-beta.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator10.0.sdk -I /Users/stephencelis/Library/Developer/Xcode/DerivedData/Formatting-aqzhjqxlluahchdgutyrqitfpstv/Build/Products/Debug-iphonesimulator -F /Users/stephencelis/Library/Developer/Xcode/DerivedData/Formatting-aqzhjqxlluahchdgutyrqitfpstv/Build/Products/Debug-iphonesimulator -F /Applications/Xcode-beta.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/Library/Frameworks -enable-testing -g -module-cache-path /Users/stephencelis/Library/Developer/Xcode/DerivedData/ModuleCache -D Xcode -serialize-debugging-options -Xcc -I/Users/stephencelis/Library/Developer/Xcode/DerivedData/Formatting-aqzhjqxlluahchdgutyrqitfpstv/Build/Intermediates/Formatting.build/Debug-iphonesimulator/Formatting.build/swift-overrides.hmap -Xcc -I/Users/stephencelis/Library/Developer/Xcode/DerivedData/Formatting-aqzhjqxlluahchdgutyrqitfpstv/Build/Products/Debug-iphonesimulator/include -Xcc -I/Users/stephencelis/Library/Developer/Xcode/DerivedData/Formatting-aqzhjqxlluahchdgutyrqitfpstv/Build/Intermediates/Formatting.build/Debug-iphonesimulator/Formatting.build/DerivedSources/x86_64 -Xcc -I/Users/stephencelis/Library/Developer/Xcode/DerivedData/Formatting-aqzhjqxlluahchdgutyrqitfpstv/Build/Intermediates/Formatting.build/Debug-iphonesimulator/Formatting.build/DerivedSources -Xcc -working-directory/Users/stephencelis/Developer/Formatting -emit-module-doc-path /Users/stephencelis/Library/Developer/Xcode/DerivedData/Formatting-aqzhjqxlluahchdgutyrqitfpstv/Build/Intermediates/Formatting.build/Debug-iphonesimulator/Formatting.build/Objects-normal/x86_64/Formatting.swiftdoc -module-name Formatting -emit-objc-header-path /Users/stephencelis/Library/Developer/Xcode/DerivedData/Formatting-aqzhjqxlluahchdgutyrqitfpstv/Build/Intermediates/Formatting.build/Debug-iphonesimulator/Formatting.build/Objects-normal/x86_64/Formatting-Swift.h -o /Users/stephencelis/Library/Developer/Xcode/DerivedData/Formatting-aqzhjqxlluahchdgutyrqitfpstv/Build/Intermediates/Formatting.build/Debug-iphonesimulator/Formatting.build/Objects-normal/x86_64/Formatting.swiftmodule 
1.  While reading from /Users/stephencelis/Library/Developer/Xcode/DerivedData/Formatting-aqzhjqxlluahchdgutyrqitfpstv/Build/Intermediates/Formatting.build/Debug-iphonesimulator/Formatting.build/Objects-normal/x86_64/Date~partial.swiftmodule
2.  While deserializing 'QQQQ' (FuncDecl #&#8203;44)
@belkadan
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Currently at https://github.com/stephencelis/Formatting/tree/33d4b301437a467edacd73cf76186980bb37e982

@belkadan
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@slavapestov, this is similar to something you fixed recently, right?

@belkadan
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I would guess this is fixed in master—QQQQ uses a generic typealias itself.

@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
@stephencelis
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Going to close this as it's super stale at this point.

@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 regression swift 3.0
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@stephencelis @belkadan @AnthonyLatsis