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[SR-9996] lldb crash in swift::Lowering::TypeConverter::getTypeLoweringForUncachedLoweredType #4341

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bobergj opened this issue Feb 25, 2019 · 4 comments
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[SR-9996] lldb crash in swift::Lowering::TypeConverter::getTypeLoweringForUncachedLoweredType #4341

bobergj opened this issue Feb 25, 2019 · 4 comments
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bug Something isn't working LLDB for Swift

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@bobergj
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bobergj commented Feb 25, 2019

Previous ID SR-9996
Radar None
Original Reporter @bobergj
Type Bug
Status Resolved
Resolution Cannot Reproduce

Attachment: Download

Environment

Swift 5

Xcode Version 10.2 beta 3 (10P99q)

macOS 10.14.3 (18D109)

Additional Detail from JIRA
Votes 0
Component/s LLDB for Swift
Labels Bug
Assignee None
Priority Medium

md5: ca2283280224db5723ce79757179513c

Issue Description:

lldb rpc server crash when printing the argument of a nested function:

po ...
13  libsystem_pthread.dylib             0x00000001011f6e41 start_wqthread + 13
Message from debugger: The LLDB RPC server has crashed. The crash log is located in ~/Library/Logs/DiagnosticReports and has a prefix 'lldb-rpc-server'. Please file a bug and attach the most recent crash log.

lldb-rpc-server crash log attached, relevant part of log:

Thread 9 Crashed:: RPC packet thread for client tid 0021770f (2193167)
0   libsystem_kernel.dylib              0x00007fff6e0c923e __pthread_kill + 10
1   libsystem_pthread.dylib             0x00007fff6e17fc1c pthread_kill + 285
2   libsystem_c.dylib                   0x00007fff6e0321c9 abort + 127
3   libsystem_malloc.dylib              0x00007fff6e1416e2 malloc_vreport + 545
4   libsystem_malloc.dylib              0x00007fff6e1414a3 malloc_report + 152
5   com.apple.LLDB.framework            0x000000010ec47f83 llvm::DenseMap<swift::Lowering::TypeConverter::CachingTypeKey, swift::Lowering::TypeLowering const*, llvm::DenseMapInfo<swift::Lowering::TypeConverter::CachingTypeKey>, llvm::detail::DenseMapPair<swift::Lowering::TypeConverter::CachingTypeKey, swift::Lowering::TypeLowering const*> >::grow(unsigned int) + 627
6   com.apple.LLDB.framework            0x000000010ec47cf7 llvm::detail::DenseMapPair<swift::Lowering::TypeConverter::CachingTypeKey, swift::Lowering::TypeLowering const*>* llvm::DenseMapBase<llvm::DenseMap<swift::Lowering::TypeConverter::CachingTypeKey, swift::Lowering::TypeLowering const*, llvm::DenseMapInfo<swift::Lowering::TypeConverter::CachingTypeKey>, llvm::detail::DenseMapPair<swift::Lowering::TypeConverter::CachingTypeKey, swift::Lowering::TypeLowering const*> >, swift::Lowering::TypeConverter::CachingTypeKey, swift::Lowering::TypeLowering const*, llvm::DenseMapInfo<swift::Lowering::TypeConverter::CachingTypeKey>, llvm::detail::DenseMapPair<swift::Lowering::TypeConverter::CachingTypeKey, swift::Lowering::TypeLowering const*> >::InsertIntoBucketImpl<swift::Lowering::TypeConverter::CachingTypeKey>(swift::Lowering::TypeConverter::CachingTypeKey const&, swift::Lowering::TypeConverter::CachingTypeKey const&, llvm::detail::DenseMapPair<swift::Lowering::TypeConverter::CachingTypeKey, swift::Lowering::TypeLowering const*>*) + 103
7   com.apple.LLDB.framework            0x000000010ec449a5 swift::Lowering::TypeConverter::getTypeLoweringForUncachedLoweredType(swift::Lowering::TypeConverter::TypeKey) + 229
8   com.apple.LLDB.framework            0x000000010ec440ec swift::Lowering::TypeConverter::getTypeLowering(swift::Lowering::AbstractionPattern, swift::Type) + 492
9   com.apple.LLDB.framework            0x000000010ea7da7a swift::irgen::IRGenModule::getLoweredType(swift::Type) + 154
10  com.apple.LLDB.framework            0x000000010f5f1702 lldb_private::SwiftASTContext::GetSwiftTypeInfo(void*) + 98
@belkadan
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Do you have a reproducing test case you can share?

cc @dcci

@bobergj
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bobergj commented Feb 26, 2019

Not at the moment as this happens in the middle of a pretty sizeable proprietary code base. But if you need some info about the function or variable in question (for example printing out some type information or running some lldb command), I can assist.

@dcci
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dcci mannequin commented Feb 28, 2019

This is going to be hard for us to diagnose without a reproducer, so if you can make the effort to have a synthetic testcase, it would be greatly appreciated.

@dcci
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Mannequin

dcci mannequin commented Oct 29, 2019

We fixed several instances of this so we encourage you to try with a new snapshot. FWIW, this bug is not actionable as is so I'm going to close it. Please reopen it if you have additional informations.

@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
@shahmishal shahmishal transferred this issue from apple/swift May 5, 2022
This issue was closed.
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