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[SR-14261] -O crashing compiler: fatal error encountered while reading from module 'Foundation' #56621

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swift-ci opened this issue Feb 19, 2021 · 2 comments
Open

[SR-14261] -O crashing compiler: fatal error encountered while reading from module 'Foundation' #56621

swift-ci opened this issue Feb 19, 2021 · 2 comments
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bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler in itself

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@swift-ci
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Previous ID SR-14261
Radar rdar://problem/74523836
Original Reporter Davidee (JIRA User)
Type Bug
Environment

Xcode 12.5 beta 2, Big Sur. Does not repro in latest trunk snapshot or swift-5.4-DEVELOPMENT-SNAPSHOT-2021-02-12-a, might already be fixed? Hopefully the fix can make it into Xcode 12.5 beta 3.

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

md5: 93739af9610fadf29cc7cd7014c6b654

Issue Description:

git clone https://github.com/apple/swift-protobuf.git

cd swift-protobuf

swift build -v -c debug -Xswiftc -O

Crash:

<unknown>:0: error: fatal error encountered while reading from module 'Foundation'; please submit a bug report (https://swift.org/contributing/#reporting-bugs) and include the project
<unknown>:0: note: module 'Foundation' full misc version is '5.4(5.4)/Apple Swift version 5.4 (swiftlang-1205.0.24.6 clang-1205.0.19.54)'

*

**

      • DESERIALIZATION FAILURE (please include this section in any bug report) ***
        top-level value not found
        Cross-reference to module 'Darwin'
        ... memcmp
        ... with type (UnsafeRawPointer, UnsafeRawPointer, Int) -> Int32

Please submit a bug report (https://swift.org/contributing/#reporting-bugs) and include the project and the crash backtrace.
Stack dump:

<args omitted>

1.  Apple Swift version 5.4 (swiftlang-1205.0.24.6 clang-1205.0.19.54)
2.  While evaluating request ExecuteSILPipelineRequest(Run pipelines { PrepareOptimizationPasses, EarlyModulePasses, HighLevel,Function+EarlyLoopOpt, HighLevel,Module+StackPromote, Serialize, MidLevel,Function, ClosureSpecialize, LowLevel,Function, LateLoopOpt, SIL Debug Info Generator } on SIL for SwiftProtobuf.SwiftProtobuf)
3.  While running pass #&#8203;48 SILModuleTransform "PerformanceSILLinker".
4.  While deserializing SIL function "$s10Foundation4DataV2eeoiySbAC_ACtFZSbSWXEfU_"
5.  While deserializing SIL function "memcmp"
0  swift-frontend           0x00000001052860f5 llvm::sys::PrintStackTrace(llvm::raw_ostream&) + 37
1  swift-frontend           0x00000001052850e8 llvm::sys::RunSignalHandlers() + 248
2  swift-frontend           0x00000001052866b6 SignalHandler(int) + 262
3  libsystem_platform.dylib 0x00007fff20609d7d _sigtramp + 29
4  libsystem_platform.dylib 000000000000000000 _sigtramp + 18446603339972960928
5  libsystem_c.dylib        0x00007fff20518720 abort + 120
6  swift-frontend           0x0000000100ff4644 swift::ModuleFileSharedCore::fatal(llvm::Error) + 100
7  swift-frontend           0x0000000100f79e08 swift::ModuleFile::fatal(llvm::Error) + 2600
8  swift-frontend           0x0000000100fb6f31 swift::SILDeserializer::readSILFunctionChecked(llvm::PointerEmbeddedInt<unsigned int, 31>, swift::SILFunction*, llvm::StringRef, bool, bool) + 10113
9  swift-frontend           0x0000000100fb4674 swift::SILDeserializer::getFuncForReference(llvm::StringRef, swift::SILType) + 916
10 swift-frontend           0x0000000100fcbba1 swift::SILDeserializer::readSILInstruction(swift::SILFunction*, swift::SILBuilder&, unsigned int, llvm::SmallVectorImpl<unsigned long long>&) + 80177
11 swift-frontend           0x0000000100fb646a swift::SILDeserializer::readSILFunctionChecked(llvm::PointerEmbeddedInt<unsigned int, 31>, swift::SILFunction*, llvm::StringRef, bool, bool) + 7354
12 swift-frontend           0x0000000100fdbe7b swift::SILDeserializer::lookupSILFunction(swift::SILFunction*, bool) + 875
13 swift-frontend           0x000000010108974a swift::SILLinkerVisitor::maybeAddFunctionToWorklist(swift::SILFunction*) + 122
14 swift-frontend           0x00000001010899df swift::SILLinkerVisitor::processFunction(swift::SILFunction*) + 239
15 swift-frontend           0x0000000100dfeccd (anonymous namespace)::SILLinker::run() + 285
16 swift-frontend           0x0000000100cc86a2 swift::SILPassManager::executePassPipelinePlan(swift::SILPassPipelinePlan const&) + 1794
17 swift-frontend           0x0000000100ce301c swift::SimpleRequest<swift::ExecuteSILPipelineRequest, std::__1::tuple<> (swift::SILPipelineExecutionDescriptor), (swift::RequestFlags)1>::evaluateRequest(swift::ExecuteSILPipelineRequest const&, swift::Evaluator&) + 60
18 swift-frontend           0x0000000100cd0925 llvm::Expected<swift::ExecuteSILPipelineRequest::OutputType> swift::Evaluator::getResultUncached<swift::ExecuteSILPipelineRequest>(swift::ExecuteSILPipelineRequest const&) + 1077
19 swift-frontend           0x0000000100cd3a5b swift::runSILOptimizationPasses(swift::SILModule&) + 427
20 swift-frontend           0x000000010060771d swift::CompilerInstance::performSILProcessing(swift::SILModule*) + 1213
21 swift-frontend           0x00000001004bded8 performCompileStepsPostSILGen(swift::CompilerInstance&, std::__1::unique_ptr<swift::SILModule, std::__1::default_delete<swift::SILModule> >, llvm::PointerUnion<swift::ModuleDecl*, swift::SourceFile*>, swift::PrimarySpecificPaths const&, int&, swift::FrontendObserver*) + 1208
22 swift-frontend           0x00000001004afd52 swift::performFrontend(llvm::ArrayRef<char const*>, char const*, void*, swift::FrontendObserver*) + 6370
23 swift-frontend           0x00000001004362c2 main + 1266
24 libdyld.dylib            0x00007fff205e0621 start + 1
25 libdyld.dylib            0x000000000000008f start + 18446603339973130863
@benlangmuir
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Comment by David Goldman (JIRA)

Note, the bug doesn't seem to trigger when WMO is enabled (hence why the repro is a debug build, SPM uses WMO for release builds), -O without WMO somehow triggers this here

@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
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bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler in itself
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