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[SR-8904] Compiler crash when using protocol function as member of protocol. #51410

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zienag opened this issue Oct 3, 2018 · 0 comments
Closed

[SR-8904] Compiler crash when using protocol function as member of protocol. #51410

zienag opened this issue Oct 3, 2018 · 0 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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@zienag
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zienag commented Oct 3, 2018

Previous ID SR-8904
Radar None
Original Reporter @zienag
Type Bug
Status Resolved
Resolution Duplicate
Environment

Apple Swift version 4.2 (swiftlang-1000.11.37.1 clang-1000.11.45.1)
Target: x86_64-apple-darwin17.7.0

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

md5: 93764ff090897a20a316ab733d1f1d72

duplicates:

  • SR-75 Referencing a protocol function crashes the compiler

Issue Description:

Code to reproduce:

protocol P {
  func f()
}
let f = P.f

Stacktrace:

0  swift                    0x000000010ac9964a PrintStackTraceSignalHandler(void*) + 42
1  swift                    0x000000010ac98dfe SignalHandler(int) + 302
2  libsystem_platform.dylib 0x00007fff504d9f5a _sigtramp + 26
3  swift                    0x0000000107e0c0ed getSILFunctionType(swift::SILModule&, swift::Lowering::AbstractionPattern, swift::CanTypeWrapper<swift::AnyFunctionType>, swift::AnyFunctionType::ExtInfo, (anonymous namespace)::Conventions const&, swift::ForeignInfo const&, llvm::Optional<swift::SILDeclRef>, llvm::Optional<swift::ProtocolConformanceRef>) + 3709
4  swift                    0x00000001078f7109 swift::Lowering::SILGenFunction::manageOpaqueValue(swift::Lowering::SILGenFunction::OpaqueValueState&, swift::SILLocation, swift::Lowering::SGFContext) + 169
5  swift                    0x000000010790bb12 swift::ASTVisitor<(anonymous namespace)::RValueEmitter, swift::Lowering::RValue, void, void, void, void, void, swift::Lowering::SGFContext>::visit(swift::Expr*, swift::Lowering::SGFContext) + 10002
6  swift                    0x000000010790a641 swift::ASTVisitor<(anonymous namespace)::RValueEmitter, swift::Lowering::RValue, void, void, void, void, void, swift::Lowering::SGFContext>::visit(swift::Expr*, swift::Lowering::SGFContext) + 4673
7  swift                    0x000000010790a351 swift::ASTVisitor<(anonymous namespace)::RValueEmitter, swift::Lowering::RValue, void, void, void, void, void, swift::Lowering::SGFContext>::visit(swift::Expr*, swift::Lowering::SGFContext) + 3921
8  swift                    0x000000010791e719 void llvm::function_ref<void (swift::Expr*)>::callback_fn<swift::Lowering::RValue swift::Lowering::SILGenFunction::emitOpenExistentialExpr<swift::Lowering::RValue, (anonymous namespace)::RValueEmitter::visitOpenExistentialExpr(swift::OpenExistentialExpr*, swift::Lowering::SGFContext)::$_16>(swift::OpenExistentialExpr*, (anonymous namespace)::RValueEmitter::visitOpenExistentialExpr(swift::OpenExistentialExpr*, swift::Lowering::SGFContext)::$_16)::'lambda'(swift::Expr*)>(long, swift::Expr*) + 41
9  swift                    0x000000010791eb7c swift::Lowering::SILGenFunction::emitOpenExistentialExprImpl(swift::OpenExistentialExpr*, llvm::function_ref<void (swift::Expr*)>) + 1004
10 swift                    0x000000010790b187 swift::ASTVisitor<(anonymous namespace)::RValueEmitter, swift::Lowering::RValue, void, void, void, void, void, swift::Lowering::SGFContext>::visit(swift::Expr*, swift::Lowering::SGFContext) + 7559
11 swift                    0x0000000107909207 swift::Lowering::SILGenFunction::emitExprInto(swift::Expr*, swift::Lowering::Initialization*, llvm::Optional<swift::SILLocation>) + 135
12 swift                    0x00000001078fc393 swift::Lowering::SILGenFunction::emitPatternBinding(swift::PatternBindingDecl*, unsigned int) + 227
13 swift                    0x00000001078a3a8d swift::ASTVisitor<swift::Lowering::SILGenFunction, void, void, void, void, void, void>::visit(swift::Decl*) + 141
14 swift                    0x00000001078a615f swift::ASTVisitor<swift::Lowering::SILGenModule, void, void, void, void, void, void>::visit(swift::Decl*) + 431
15 swift                    0x00000001078a501b swift::Lowering::SILGenModule::emitSourceFile(swift::SourceFile*, unsigned int) + 939
16 swift                    0x00000001078a6bd5 swift::SILModule::constructSIL(swift::ModuleDecl*, swift::SILOptions&, swift::FileUnit*, llvm::Optional<unsigned int>, bool) + 1333
17 swift                    0x0000000106f283fe performCompile(swift::CompilerInstance&, swift::CompilerInvocation&, llvm::ArrayRef<char const*>, int&, swift::FrontendObserver*, swift::UnifiedStatsReporter*) + 28990
18 swift                    0x0000000106f1ddc5 swift::performFrontend(llvm::ArrayRef<char const*>, char const*, void*, swift::FrontendObserver*) + 7717
19 swift                    0x0000000106ec3a35 main + 1349
20 libdyld.dylib            0x00007fff501cb015 start + 1
21 libdyld.dylib            0x0000000000000042 start + 2950909998

I don't know, is it valid code in swift or not, but I hope it will be at some point 🙂 Nevertheless, I don't think that compiler crash is expected behaviour.
@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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@zienag