[SR-14282] Compiler crash in DictionaryTrapsObjC.swift

[benrimmington]

Previous ID	SR-14282
Radar	rdar://problem/74877200
Original Reporter	@benrimmington
Type	Bug
Status	Closed
Resolution	Cannot Reproduce

Environment

• macOS 11.2.1 (20D74)

• Xcode 12.4 (12D4e)

• main branch of apple/swift

Additional Detail from JIRA

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

md5: d52ffd6be17508cc749f70bd8e9b6837

Issue Description:

There are three ForcedVerbatimBridge validation-tests in DictionaryTrapsObjC.swift, which crash when compiling with optimizations.

The entire test file was previously disabled, and the three tests will now be disabled with #if DEBUG.

Stack dump:
0.  Program arguments: /Users/benrimmington/Public/apple/build/Ninja-RelWithDebInfoAssert/swift-macosx-x86_64/bin/swift-frontend -frontend -c -primary-file /Users/benrimmington/Public/apple/swift/validation-test/stdlib/DictionaryTrapsObjC.swift -target x86_64-apple-macosx10.9 -enable-objc-interop -sdk /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX11.1.sdk -F /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -F /Users/benrimmington/Public/apple/build/Ninja-RelWithDebInfoAssert/swift-macosx-x86_64/lib -module-cache-path /Users/benrimmington/Public/apple/build/Ninja-RelWithDebInfoAssert/swift-macosx-x86_64/swift-test-results/x86_64-apple-macosx10.9/clang-module-cache -swift-version 4 -O -ignore-module-source-info -target-sdk-version 11.1 -module-name main -o /var/folders/n7/mq4lxxk13cq8ptrk4sn55khc0000gn/T/DictionaryTrapsObjC-b4dec4.o
1.  Swift version 5.4-dev (LLVM 2ca842e25f65b93, Swift 42a227abc3ef6ea)
2.  While evaluating request ExecuteSILPipelineRequest(Run pipelines { Mandatory Diagnostic Passes + Enabling Optimization Passes } on SIL for main.main)
3.  While running pass #​0 SILModuleTransform "SILGenCleanup".
Stack dump without symbol names (ensure you have llvm-symbolizer in your PATH or set the environment var `LLVM_SYMBOLIZER_PATH` to point to it):
0  swift-frontend           0x0000000111ee82e7 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) + 39
1  swift-frontend           0x0000000111ee7505 llvm::sys::RunSignalHandlers() + 85
2  swift-frontend           0x0000000111ee8906 SignalHandler(int) + 262
3  libsystem_platform.dylib 0x00007fff2063dd7d _sigtramp + 29
4  libsystem_platform.dylib 000000000000000000 _sigtramp + 18446603339972747936
5  swift-frontend           0x000000010e1890ab swift::CanonicalizeInstruction::canonicalize(swift::SILInstruction*) + 2827
6  swift-frontend           0x000000010e003c14 (anonymous namespace)::SILGenCleanup::run() + 628
7  swift-frontend           0x000000010e019b7e swift::SILPassManager::runModulePass(unsigned int) + 702
8  swift-frontend           0x000000010e02002a swift::SILPassManager::execute() + 666
9  swift-frontend           0x000000010e016558 swift::SILPassManager::executePassPipelinePlan(swift::SILPassPipelinePlan const&) + 72
10 swift-frontend           0x000000010e0164f3 swift::ExecuteSILPipelineRequest::evaluate(swift::Evaluator&, swift::SILPipelineExecutionDescriptor) const + 51
11 swift-frontend           0x000000010e03ad8d swift::SimpleRequest<swift::ExecuteSILPipelineRequest, std::__1::tuple<> (swift::SILPipelineExecutionDescriptor), (swift::RequestFlags)1>::evaluateRequest(swift::ExecuteSILPipelineRequest const&, swift::Evaluator&) + 29
12 swift-frontend           0x000000010e022670 llvm::Expected<swift::ExecuteSILPipelineRequest::OutputType> swift::Evaluator::getResultUncached<swift::ExecuteSILPipelineRequest>(swift::ExecuteSILPipelineRequest const&) + 240
13 swift-frontend           0x000000010e016784 swift::executePassPipelinePlan(swift::SILModule*, swift::SILPassPipelinePlan const&, bool, swift::irgen::IRGenModule*) + 68
14 swift-frontend           0x000000010e024997 swift::runSILDiagnosticPasses(swift::SILModule&) + 87
15 swift-frontend           0x000000010d8434dc swift::CompilerInstance::performSILProcessing(swift::SILModule*) + 60
16 swift-frontend           0x000000010d728659 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*) + 633
17 swift-frontend           0x000000010d72809e performCompileStepsPostSema(swift::CompilerInstance&, int&, swift::FrontendObserver*) + 350
18 swift-frontend           0x000000010d71d515 swift::performFrontend(llvm::ArrayRef<char const*>, char const*, void*, swift::FrontendObserver*) + 4885
19 swift-frontend           0x000000010d6b7717 main + 519
20 libdyld.dylib            0x00007fff20614621 start + 1
21 libdyld.dylib            0x000000000000001a start + 18446603339972917754
<unknown>:0: error: unable to execute command: Segmentation fault: 11
<unknown>:0: error: compile command failed due to signal 11 (use -v to see invocation)

--

[typesanitizer]

@swift-ci create

[eeckstein]

@benrimmington I cannot reproduce this. Did you try with top of main? Any build-script options you used?

[benrimmington]

I cannot reproduce this.

@@eeckstein Neither can I now. I've created apple/swift#36426 to remove the DEBUG-only restriction.

Did you try with top of main?

I would have used top of main, 3 weeks ago, for apple/swift#36072.

Any build-script options you used?

I would probably have started with
utils/build-script --clean --release-debuginfo --test,
followed by utils/run-test.