[SR-9084] ReactiveCocoa, debug build, compiler assert, deserialization: cross-reference to generic param for non-generic type

[atrick]

Previous ID	SR-9084
Radar	rdar://problem/45566043
Original Reporter	@atrick
Type	Bug
Status	Resolved
Resolution	Done

Additional Detail from JIRA

Votes	0
Component/s	Compiler
Labels	Bug
Assignee	@belkadan
Priority	Medium

md5: e00344efabf69314e950e81bd90faa32

Issue Description:

Reproduce with:

./runner.py --projects projects.json --include-actions 'action.startswith("Build")' --swiftc /s/stash/build/Ninja-ReleaseAssert/swift-macosx-x86_64/bin/swiftc --build-config debug --include-repos ' ``path == "ReactiveCocoa"'

DESERIALIZATION FAILURE

Cross-reference to module 'ReactiveSwift'Cross-reference to module 'ReactiveSwift'

1. While deserializing SIL vtable for 'SignalProducerCore' in module 'ReactiveSwift'

2. While deserializing 'flatMapEvent' (FuncDecl #​4) in 'ReactiveSwift'

3. While deserializing 'transform' (ParamDecl #​66) in 'ReactiveSwift'
   {{}}

Stack:

6 swift 0x000000010df25153 swift::ModuleFile::fatal(llvm::Error) + 6757 swift 0x000000010df254ef swift::ModuleFile::getDecl(llvm::PointerEmbeddedInt<unsigned int, 31>) + 1118 swift 0x000000010df2dff9 swift::ModuleFile::getTypeChecked(llvm::PointerEmbeddedInt<unsigned int, 31>) + 7513

[atrick]

@swift-ci create

[belkadan]

Oops. Got a fix.

[atrick]

Thanks!

[belkadan]

#20091

[swift-ci]

Comment by Andrei Ermoshin (JIRA)

Just found similar crash while compiling iOS project in Xcode 10.1 with ReactiveSwift from CocoaPods.

pod 'ReactiveSwift', '~> 3.0'

Workaround: Xcode -> Product -> Clean build folder. After that I can build project without error.

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

• • • DESERIALIZATION FAILURE (please include this section in any bug report) ***

result not found

Cross-reference to module 'ReactiveSwift'

... Signal

... in an extension in module 'ReactiveSwift'

... Error

0 swift 0x000000010831859a PrintStackTraceSignalHandler(void*) + 42

1 swift 0x0000000108317d4e SignalHandler(int) + 302

2 libsystem_platform.dylib 0x00007fff760fcb3d _sigtramp + 29

3 swift 0x0000000108dc4008 (anonymous namespace)::DarwinX86AsmBackend::getCompactUnwindRegNum(unsigned int) const::CU32BitRegs + 101474

4 libsystem_c.dylib 0x00007fff75fba1c9 abort + 127

5 swift 0x000000010577dfeb swift::ModuleFile::fatal(llvm::Error) + 1915

6 swift 0x0000000105789390 swift::ModuleFile::getDeclCheckedImpl(llvm::PointerEmbeddedInt<unsigned int, 31>, llvm::Optional<swift::DeclContext*>) + 44496

7 swift 0x000000010577e47f swift::ModuleFile::getDeclChecked(llvm::PointerEmbeddedInt<unsigned int, 31>, llvm::Optional<swift::DeclContext*>) + 79

8 swift 0x000000010578e4b1 swift::ModuleFile::getDeclContext(llvm::PointerEmbeddedInt<unsigned int, 31>) + 289

9 swift 0x000000010578217e swift::ModuleFile::getDeclCheckedImpl(llvm::PointerEmbeddedInt<unsigned int, 31>, llvm::Optional<swift::DeclContext*>) + 15294

10 swift 0x000000010577e47f swift::ModuleFile::getDeclChecked(llvm::PointerEmbeddedInt<unsigned int, 31>, llvm::Optional<swift::DeclContext*>) + 79

11 swift 0x000000010578be23 swift::ModuleFile::getTypeChecked(llvm::PointerEmbeddedInt<unsigned int, 31>) + 6195

12 swift 0x0000000105794ea7 swift::ModuleFile::getGenericSignature(llvm::PointerEmbeddedInt<unsigned int, 31>) + 759

13 swift 0x000000010578efd6 swift::ModuleFile::getGenericSignatureOrEnvironment(llvm::PointerEmbeddedInt<unsigned int, 31>, bool) + 262

14 swift 0x00000001057a1578 swift::SILDeserializer::readSILFunctionChecked(llvm::PointerEmbeddedInt<unsigned int, 31>, swift::SILFunction*, llvm::StringRef, bool, bool) + 3528

15 swift 0x00000001057b75b7 swift::SILDeserializer::getAllSILFunctions() + 967

16 swift 0x000000010585e6ca swift::SerializedSILLoader::getAllForModule(swift::Identifier, swift::FileUnit*) + 170

17 swift 0x00000001045a692e performCompile(swift::CompilerInstance&, swift::CompilerInvocation&, llvm::ArrayRef<char const*>, int&, swift::FrontendObserver*, swift::UnifiedStatsReporter*) + 34558

18 swift 0x000000010459ad35 swift::performFrontend(llvm::ArrayRef<char const*>, char const*, void*, swift::FrontendObserver*) + 7717

19 swift 0x0000000104540965 main + 1349

20 libdyld.dylib 0x00007fff75f11ed9 start + 1

21 libdyld.dylib 0x0000000000000062 start + 2316231050

part of Stack dump:

iphonesimulator/ReactiveSwift.build/Objects-normal/x86_64/ReactiveSwift.swiftmodule

1. While deserializing SIL function "$S13ReactiveSwift6SignalCAAs5NeverORszrlE12promoteValueyACyqd_q_GqdmlFfA"

2. While deserializing 'U' (GenericTypeParamDecl #811) in 'ReactiveSwift'

3. While deserializing 'promoteValue' (FuncDecl #238) in 'ReactiveSwift'

error: Abort trap: 6