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[SR-1426] Bus error when conforming to multiple protocols with associatedtype #44035

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swift-ci opened this issue May 6, 2016 · 2 comments
Closed

[SR-1426] Bus error when conforming to multiple protocols with associatedtype #44035

swift-ci opened this issue May 6, 2016 · 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 crash Bug: A crash, i.e., an abnormal termination of software

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@swift-ci
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swift-ci commented May 6, 2016

Previous ID SR-1426
Radar None
Original Reporter wisolith (JIRA User)
Type Bug
Status Resolved
Resolution Duplicate

Attachment: Download

Environment

Swift 2.2
Xcode 7.3.1

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

md5: 8242d35723faac0f76f9aa9b99f8b3bc

is duplicated by:

  • SR-2171 Crash with typealias X = Y in protocol & redundant class constraint

Issue Description:

The attached file, abstracted from the Eureka form library, results in the following bus error during compilation:

Command failed due to signal: Bus error: 10
0  swift                    0x0000000103ac366b llvm::sys::PrintStackTrace(llvm::raw_ostream&) + 43
1  swift                    0x0000000103ac2956 llvm::sys::RunSignalHandlers() + 70
2  swift                    0x0000000103ac3ccf SignalHandler(int) + 287
3  libsystem_platform.dylib 0x00007fff87394eaa _sigtramp + 26
4  swift                    0x00000001038ee90b llvm::FoldingSet<llvm::AttributeSetNode>::NodeEquals(llvm::FoldingSetImpl::Node*, llvm::FoldingSetNodeID const&, unsigned int, llvm::FoldingSetNodeID&) const + 59
5  swift                    0x0000000102eeceff llvm::CallInst::Create(llvm::FunctionType*, llvm::Value*, llvm::ArrayRef<llvm::Value*>, llvm::ArrayRef<llvm::OperandBundleDefT<llvm::Value*> >, llvm::Twine const&, llvm::Instruction*) + 367
6  swift                    0x0000000102eed090 llvm::IRBuilder<true, llvm::ConstantFolder, llvm::IRBuilderDefaultInserter<true> >::CreateCall(llvm::Value*, llvm::ArrayRef<llvm::Value*>, llvm::Twine const&) + 64
7  swift                    0x0000000101913fb5 swift::irgen::IRGenModule::emitSILWitnessTable(swift::SILWitnessTable*) + 1829
8  swift                    0x00000001018a76cd swift::irgen::IRGenModuleDispatcher::emitGlobalTopLevel() + 861
9  swift                    0x000000010193304e performIRGeneration(swift::IRGenOptions&, swift::ModuleDecl*, swift::SILModule*, llvm::StringRef, llvm::LLVMContext&, swift::SourceFile*, unsigned int) + 1278
10 swift                    0x00000001019334f6 swift::performIRGeneration(swift::IRGenOptions&, swift::SourceFile&, swift::SILModule*, llvm::StringRef, llvm::LLVMContext&, unsigned int) + 70
11 swift                    0x0000000101816c8c performCompile(swift::CompilerInstance&, swift::CompilerInvocation&, llvm::ArrayRef<char const*>, int&) + 15004
12 swift                    0x000000010181268d frontend_main(llvm::ArrayRef<char const*>, char const*, void*) + 2781
13 swift                    0x000000010180e0ac main + 1932
14 libdyld.dylib            0x00007fff882c95ad start + 1
15 libdyld.dylib            0x000000000000003c start + 2010344080

Adding a generic type placeholder to the definition of CustomRow resolves the error, for example:

class CustomRow<T>: Row<String, CustomCell>, SelectableRowType {
  var selectableValue: String?
}
@belkadan
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belkadan commented May 6, 2016

In a debug compiler:

no relation found that declares conformance to target
UNREACHABLE executed at /Volumes/Data/swift-public/swift/lib/IRGen/GenArchetype.cpp:140!
0  swift                    0x0000000102e88ddb llvm::sys::PrintStackTrace(llvm::raw_ostream&) + 43
1  swift                    0x0000000102e88066 llvm::sys::RunSignalHandlers() + 70
2  swift                    0x0000000102e894af SignalHandler(int) + 383
3  libsystem_platform.dylib 0x00007fff893f252a _sigtramp + 26
4  swift                    0x0000000103a0e400 clang::vfs::getNextVirtualUniqueID()::UID + 71784
5  swift                    0x0000000102e89286 abort + 22
6  swift                    0x0000000102e2b0ad llvm::llvm_unreachable_internal(char const*, char const*, unsigned int) + 493
7  swift                    0x0000000100406820 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) + 368
8  swift                    0x00000001004d0931 swift::irgen::emitImpliedWitnessTableRef(swift::irgen::IRGenFunction&, llvm::ArrayRef<swift::irgen::ProtocolEntry>, swift::ProtocolDecl*, llvm::function_ref<llvm::Value* (unsigned int)> const&) + 273
9  swift                    0x00000001004041d4 swift::irgen::emitArchetypeWitnessTableRef(swift::irgen::IRGenFunction&, swift::CanTypeWrapper<swift::ArchetypeType>, swift::ProtocolDecl*) + 164
10 swift                    0x00000001004d476c swift::SILWitnessVisitor<(anonymous namespace)::WitnessTableBuilder>::visitProtocolDecl(swift::ProtocolDecl*) + 5004
11 swift                    0x00000001004cd512 swift::irgen::IRGenModule::emitSILWitnessTable(swift::SILWitnessTable*) + 418
12 swift                    0x000000010043e817 swift::irgen::IRGenerator::emitGlobalTopLevel() + 775
13 swift                    0x0000000100504b40 performIRGeneration(swift::IRGenOptions&, swift::ModuleDecl*, swift::SILModule*, llvm::StringRef, llvm::LLVMContext&, swift::SourceFile*, unsigned int) + 1008
14 swift                    0x00000001005050e5 swift::performIRGeneration(swift::IRGenOptions&, swift::SourceFile&, swift::SILModule*, llvm::StringRef, llvm::LLVMContext&, unsigned int) + 69
15 swift                    0x00000001003ee0f9 performCompile(swift::CompilerInstance&, swift::CompilerInvocation&, llvm::ArrayRef<char const*>, int&, swift::FrontendObserver*) + 16473
16 swift                    0x00000001003e9196 swift::performFrontend(llvm::ArrayRef<char const*>, char const*, void*, swift::FrontendObserver*) + 2870
17 swift                    0x00000001003ac480 main + 2640
18 libdyld.dylib            0x00007fff9ae965ad start + 1

@bob-wilson
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I'm pretty sure this is a duplicate of one of the crashes reported in SR-1951, which was fixed in #4330 It no longer crashes for me.

@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
@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
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