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[SR-15346] IRGen crashed with a function that has Self as parameter type #57668

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kemchenj opened this issue Oct 16, 2021 · 4 comments
Open

[SR-15346] IRGen crashed with a function that has Self as parameter type #57668

kemchenj opened this issue Oct 16, 2021 · 4 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 IRGen LLVM IR generation

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@kemchenj
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Previous ID SR-15346
Radar None
Original Reporter @kemchenj
Type Bug
Environment

Xcode 13.0

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

md5: 1b44139f581b232275d47897a6071ae9

Issue Description:

Currently the compiler will complain this function call with `Result of call to `foo(bar: )` is unused`:

import Foundation

extension NSObject {
  func foo(bar: (Self) -> Void) {}
}

let object = NSObject()

object.foo { _ in } // Result of call to `foo(bar:)` is unused
@LucianoPAlmeida
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Also seems to crash in IRGen [Xcode 13.0 (13A233)]
Stacktrace bellow

/Users/lucianoalmeida/Documents/programming/Learning/switc/switc/main.swift:35:8: warning: result of call to 'foo(bar:)' is unused
object.foo { _ in }
       ^   ~~~~~~~~
Please submit a bug report (https://swift.org/contributing/#reporting-bugs) and include the project and the crash backtrace.
Stack dump:
0.  Program arguments: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift-frontend -frontend -c -primary-file /Users/lucianoalmeida/Documents/programming/Learning/switc/switc/main.swift -emit-module-path /Users/lucianoalmeida/Library/Developer/Xcode/DerivedData/switc-hjhulawumcizrsccfgobepwmfhcu/Build/Intermediates.noindex/switc.build/Debug/switc.build/Objects-normal/arm64/main~partial.swiftmodule -emit-module-doc-path /Users/lucianoalmeida/Library/Developer/Xcode/DerivedData/switc-hjhulawumcizrsccfgobepwmfhcu/Build/Intermediates.noindex/switc.build/Debug/switc.build/Objects-normal/arm64/main~partial.swiftdoc -emit-module-source-info-path /Users/lucianoalmeida/Library/Developer/Xcode/DerivedData/switc-hjhulawumcizrsccfgobepwmfhcu/Build/Intermediates.noindex/switc.build/Debug/switc.build/Objects-normal/arm64/main~partial.swiftsourceinfo -emit-dependencies-path /Users/lucianoalmeida/Library/Developer/Xcode/DerivedData/switc-hjhulawumcizrsccfgobepwmfhcu/Build/Intermediates.noindex/switc.build/Debug/switc.build/Objects-normal/arm64/main.d -emit-reference-dependencies-path /Users/lucianoalmeida/Library/Developer/Xcode/DerivedData/switc-hjhulawumcizrsccfgobepwmfhcu/Build/Intermediates.noindex/switc.build/Debug/switc.build/Objects-normal/arm64/main.swiftdeps -serialize-diagnostics-path /Users/lucianoalmeida/Library/Developer/Xcode/DerivedData/switc-hjhulawumcizrsccfgobepwmfhcu/Build/Intermediates.noindex/switc.build/Debug/switc.build/Objects-normal/arm64/main.dia -target arm64-apple-macos11.2 -Xllvm -aarch64-use-tbi -enable-objc-interop -stack-check -sdk /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX11.3.sdk -I /Users/lucianoalmeida/Library/Developer/Xcode/DerivedData/switc-hjhulawumcizrsccfgobepwmfhcu/Build/Products/Debug -F /Users/lucianoalmeida/Library/Developer/Xcode/DerivedData/switc-hjhulawumcizrsccfgobepwmfhcu/Build/Products/Debug -enable-testing -g -module-cache-path /Users/lucianoalmeida/Library/Developer/Xcode/DerivedData/ModuleCache.noindex -swift-version 5 -enforce-exclusivity=checked -Onone -D DEBUG -new-driver-path /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift-driver -serialize-debugging-options -Xcc -working-directory -Xcc /Users/lucianoalmeida/Documents/programming/Learning/switc -resource-dir /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift -enable-anonymous-context-mangled-names -Xcc -I/Users/lucianoalmeida/Library/Developer/Xcode/DerivedData/switc-hjhulawumcizrsccfgobepwmfhcu/Build/Intermediates.noindex/switc.build/Debug/switc.build/swift-overrides.hmap -Xcc -iquote -Xcc /Users/lucianoalmeida/Library/Developer/Xcode/DerivedData/switc-hjhulawumcizrsccfgobepwmfhcu/Build/Intermediates.noindex/switc.build/Debug/switc.build/switc-generated-files.hmap -Xcc -I/Users/lucianoalmeida/Library/Developer/Xcode/DerivedData/switc-hjhulawumcizrsccfgobepwmfhcu/Build/Intermediates.noindex/switc.build/Debug/switc.build/switc-own-target-headers.hmap -Xcc -I/Users/lucianoalmeida/Library/Developer/Xcode/DerivedData/switc-hjhulawumcizrsccfgobepwmfhcu/Build/Intermediates.noindex/switc.build/Debug/switc.build/switc-all-target-headers.hmap -Xcc -iquote -Xcc /Users/lucianoalmeida/Library/Developer/Xcode/DerivedData/switc-hjhulawumcizrsccfgobepwmfhcu/Build/Intermediates.noindex/switc.build/Debug/switc.build/switc-project-headers.hmap -Xcc -I/Users/lucianoalmeida/Library/Developer/Xcode/DerivedData/switc-hjhulawumcizrsccfgobepwmfhcu/Build/Products/Debug/include -Xcc -I/Users/lucianoalmeida/Library/Developer/Xcode/DerivedData/switc-hjhulawumcizrsccfgobepwmfhcu/Build/Intermediates.noindex/switc.build/Debug/switc.build/DerivedSources-normal/arm64 -Xcc -I/Users/lucianoalmeida/Library/Developer/Xcode/DerivedData/switc-hjhulawumcizrsccfgobepwmfhcu/Build/Intermediates.noindex/switc.build/Debug/switc.build/DerivedSources/arm64 -Xcc -I/Users/lucianoalmeida/Library/Developer/Xcode/DerivedData/switc-hjhulawumcizrsccfgobepwmfhcu/Build/Intermediates.noindex/switc.build/Debug/switc.build/DerivedSources -Xcc -DDEBUG=1 -module-name switc -target-sdk-version 11.3.0 -o /Users/lucianoalmeida/Library/Developer/Xcode/DerivedData/switc-hjhulawumcizrsccfgobepwmfhcu/Build/Intermediates.noindex/switc.build/Debug/switc.build/Objects-normal/arm64/main.o -index-store-path /Users/lucianoalmeida/Library/Developer/Xcode/DerivedData/switc-hjhulawumcizrsccfgobepwmfhcu/Index/DataStore -index-system-modules
1.  Apple Swift version 5.5 (swiftlang-1300.0.31.1 clang-1300.0.29.1)
2.  
3.  While evaluating request IRGenRequest(IR Generation for file "/Users/lucianoalmeida/Documents/programming/Learning/switc/switc/main.swift")
4.  While emitting IR SIL function "@main".
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           0x00000001052545e4 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) + 56
1  swift-frontend           0x00000001052536ec llvm::sys::RunSignalHandlers() + 128
2  swift-frontend           0x0000000105254c24 SignalHandler(int) + 292
3  libsystem_platform.dylib 0x00000001a1dcac44 _sigtramp + 56
4  swift-frontend           0x000000010138db44 swift::irgen::IRGenFunction::getDynamicSelfMetadata() + 140
5  swift-frontend           0x000000010148690c emitDirectTypeMetadataRef(swift::irgen::IRGenFunction&, swift::CanType, swift::irgen::DynamicMetadataRequest) + 528
6  swift-frontend           0x0000000101485dbc swift::irgen::IRGenFunction::emitTypeMetadataRef(swift::CanType, swift::irgen::DynamicMetadataRequest) + 256
7  swift-frontend           0x00000001014897a8 swift::irgen::emitMetatypeRef(swift::irgen::IRGenFunction&, swift::CanTypeWrapper<swift::MetatypeType>, swift::irgen::Explosion&) + 72
8  swift-frontend           0x0000000101453928 swift::SILInstructionVisitor<(anonymous namespace)::IRGenSILFunction, void>::visit(swift::SILInstruction*) + 27676
9  swift-frontend           0x0000000101448180 swift::irgen::IRGenModule::emitSILFunction(swift::SILFunction*) + 7732
10 swift-frontend           0x0000000101322684 swift::irgen::IRGenerator::emitGlobalTopLevel(std::__1::vector<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::allocator<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > > > const&) + 1332
11 swift-frontend           0x000000010141bd44 swift::IRGenRequest::evaluate(swift::Evaluator&, swift::IRGenDescriptor) const + 7572
12 swift-frontend           0x0000000101446074 swift::SimpleRequest<swift::IRGenRequest, swift::GeneratedModule (swift::IRGenDescriptor), (swift::RequestFlags)9>::evaluateRequest(swift::IRGenRequest const&, swift::Evaluator&) + 188
13 swift-frontend           0x00000001014261c4 llvm::Expected<swift::IRGenRequest::OutputType> swift::Evaluator::getResultUncached<swift::IRGenRequest>(swift::IRGenRequest const&) + 752
14 swift-frontend           0x000000010141f9e4 swift::performIRGeneration(swift::FileUnit*, swift::IRGenOptions const&, swift::TBDGenOptions const&, std::__1::unique_ptr<swift::SILModule, std::__1::default_delete<swift::SILModule> >, llvm::StringRef, swift::PrimarySpecificPaths const&, llvm::StringRef, llvm::GlobalVariable**) + 236
15 swift-frontend           0x0000000100fea300 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*) + 2544
16 swift-frontend           0x0000000100fdd4fc swift::performFrontend(llvm::ArrayRef<char const*>, char const*, void*, swift::FrontendObserver*) + 6508
17 swift-frontend           0x0000000100f37e6c main + 932
18 libdyld.dylib            0x00000001a1d9d430 start + 4
error: Segmentation fault: 11 (in target 'switc' from project 'switc')

@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
@kemchenj kemchenj changed the title [SR-15346] void function call with Result of call is unused warnings [SR-15346] IRGen crashed with a function that has Self as parameter type May 5, 2022
@xwu xwu added IRGen LLVM IR generation crash Bug: A crash, i.e., an abnormal termination of software labels May 27, 2022
@kemchenj
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kemchenj commented Jun 13, 2022 •
edited

Update, still crash in Xcode 14 beta 1

Stack dump:
0.	Program arguments: /Applications/Xcode-14-beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift-frontend -frontend -c -primary-file Untitled.swift -target arm64-apple-macosx12.0 -Xllvm -aarch64-use-tbi -enable-objc-interop -stack-check -sdk /Applications/Xcode-14-beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX13.0.sdk -new-driver-path /Applications/Xcode-14-beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift-driver -empty-abi-descriptor -resource-dir /Applications/Xcode-14-beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift -module-name Untitled -disable-clang-spi -target-sdk-version 13.0 -o /var/folders/0g/19fzt3zj69dgvkfh_v7tbl1h0000gn/T/TemporaryDirectory.wr65sQ/Untitled-1.o
1.	Apple Swift version 5.7 (swiftlang-5.7.0.113.202 clang-1400.0.16.2)
2.	Compiling with the current language version
3.	While evaluating request IRGenRequest(IR Generation for file "Untitled.swift")
4.	While emitting IR SIL function "@main".
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           0x0000000105890160 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) + 56
1  swift-frontend           0x000000010588f174 llvm::sys::RunSignalHandlers() + 112
2  swift-frontend           0x00000001058907e4 SignalHandler(int) + 344
3  libsystem_platform.dylib 0x00000001ac4d74a4 _sigtramp + 56
4  swift-frontend           0x000000010134ba10 emitDirectTypeMetadataRef(swift::irgen::IRGenFunction&, swift::CanType, swift::irgen::DynamicMetadataRequest) + 868
5  swift-frontend           0x000000010134ba10 emitDirectTypeMetadataRef(swift::irgen::IRGenFunction&, swift::CanType, swift::irgen::DynamicMetadataRequest) + 868
6  swift-frontend           0x000000010134aec4 swift::irgen::IRGenFunction::emitTypeMetadataRef(swift::CanType, swift::irgen::DynamicMetadataRequest) + 268
7  swift-frontend           0x000000010134ecbc swift::irgen::emitMetatypeRef(swift::irgen::IRGenFunction&, swift::CanTypeWrapper<swift::MetatypeType>, swift::irgen::Explosion&) + 72
8  swift-frontend           0x000000010130dc20 swift::SILInstructionVisitor<(anonymous namespace)::IRGenSILFunction, void>::visit(swift::SILInstruction*) + 9776
9  swift-frontend           0x0000000101306650 swift::irgen::IRGenModule::emitSILFunction(swift::SILFunction*) + 7772
10 swift-frontend           0x00000001011d3574 swift::irgen::IRGenerator::emitGlobalTopLevel(std::__1::vector<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::allocator<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > > > const&) + 1660
11 swift-frontend           0x00000001012d4914 swift::IRGenRequest::evaluate(swift::Evaluator&, swift::IRGenDescriptor) const + 2556
12 swift-frontend           0x0000000101304528 swift::SimpleRequest<swift::IRGenRequest, swift::GeneratedModule (swift::IRGenDescriptor), (swift::RequestFlags)9>::evaluateRequest(swift::IRGenRequest const&, swift::Evaluator&) + 188
13 swift-frontend           0x00000001012e0e00 llvm::Expected<swift::IRGenRequest::OutputType> swift::Evaluator::getResultUncached<swift::IRGenRequest>(swift::IRGenRequest const&) + 744
14 swift-frontend           0x00000001012d7cf4 swift::performIRGeneration(swift::FileUnit*, swift::IRGenOptions const&, swift::TBDGenOptions const&, std::__1::unique_ptr<swift::SILModule, std::__1::default_delete<swift::SILModule> >, llvm::StringRef, swift::PrimarySpecificPaths const&, llvm::StringRef, llvm::GlobalVariable**) + 236
15 swift-frontend           0x0000000100f04e98 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*) + 2140
16 swift-frontend           0x0000000100f06d4c swift::performFrontend(llvm::ArrayRef<char const*>, char const*, void*, swift::FrontendObserver*) + 6252
17 swift-frontend           0x0000000100eaa474 swift::mainEntry(int, char const**) + 3940
18 dyld                     0x0000000107fc508c start + 520

@AnthonyLatsis
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This is expected because dynamic Self (or Self?) is not supposed to be allowed anywhere other than in direct, top-level result position. So the real bug is that we fail to diagnose an unsupported usage of Self.

@kemchenj
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This is expected because dynamic Self (or Self?) is not supposed to be allowed anywhere other than in direct, top-level result position. So the real bug is that we fail to diagnose an unsupported usage of Self.

Oh, I got it now. Thanks for your explanation.

@AnthonyLatsis AnthonyLatsis added CompilerCrash and removed crash Bug: A crash, i.e., an abnormal termination of software labels Sep 17, 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 IRGen LLVM IR generation
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@xwu @LucianoPAlmeida @kemchenj @AnthonyLatsis