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[SR-10584] REPL crashes when triggering code completion with tab #4569

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swift-ci opened this issue Apr 30, 2019 · 4 comments
Closed

[SR-10584] REPL crashes when triggering code completion with tab #4569

swift-ci opened this issue Apr 30, 2019 · 4 comments
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bug Something isn't working LLDB for Swift

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@swift-ci
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Previous ID SR-10584
Radar None
Original Reporter segabor (JIRA User)
Type Bug
Status Closed
Resolution Cannot Reproduce
Environment

OS: Arch Linux

Linux csihuhu 5.0.7-arch1-1-ARCH #​1 SMP PREEMPT Mon Apr 8 10:37:08 UTC 2019 x86_64 GNU/Linux

Swift Snapshot Version: 5.1-DEVELOPMENT-SNAPSHOT-2019-04-25-a

Additional Detail from JIRA
Votes 1
Component/s LLDB for Swift
Labels Bug
Assignee None
Priority Medium

md5: 999acccd4cc97b4131e9058e2a7608fa

Issue Description:

Swift REPL in latest snapshot crashes at once if I want to get code completion for a string. Session captured below:

Welcome to Swift version 5.0-dev (LLVM 77814f897e, Swift ea80003b0c).
Type :help for assistance.
  1> let str = "apple"
str: String = "apple"
  2> print(str.
Available completions:
    allSatisfy(predicate: (Character) throws -> Bool(Character) throws -> Bool) -> Bool                                                                                                        
 #​0 0x0000555adea34814 (lldb+0x22814)
 #​1 0x0000555adea3290c (lldb+0x2090c)
 #​2 0x0000555adea34da8 (lldb+0x22da8)
 #​3 0x00007f2bd880a4d0 __restore_rt (/usr/lib/libpthread.so.0+0x124d0)
 #​4 0x00007f2bd1b66cfc PrintCompletion(_IO_FILE*, unsigned long, unsigned long, lldb_private::StringList&, lldb_private::StringList&) (/home/segabor/.swiftenv/versions/swift-5.1-DEVELOPMENT-SNAPSHOT-2019-04-25-a/usr/bin/../lib/liblldb.so.7svn+0xac9cfc)
 #​5 0x00007f2bd1b66b77 lldb_private::Editline::TabCommand(int) (/home/segabor/.swiftenv/versions/swift-5.1-DEVELOPMENT-SNAPSHOT-2019-04-25-a/usr/bin/../lib/liblldb.so.7svn+0xac9b77)
 #​6 0x00007f2bd1b6900d lldb_private::Editline::ConfigureEditor(bool)::$_13::__invoke(editline*, int)(/home/segabor/.swiftenv/versions/swift-5.1-DEVELOPMENT-SNAPSHOT-2019-04-25-a/usr/bin/../lib/liblldb.so.7svn+0xacc00d)
 #​7 0x00007f2bd06e2d33 el_wgets (/usr/lib/libedit.so.0+0x10d33)
 #​8 0x00007f2bd06de2d4 el_gets (/usr/lib/libedit.so.0+0xc2d4)
 #​9 0x00007f2bd1b6874d lldb_private::Editline::GetLines(int, lldb_private::StringList&, bool&) (/home/segabor/.swiftenv/versions/swift-5.1-DEVELOPMENT-SNAPSHOT-2019-04-25-a/usr/bin/../lib/liblldb.so.7svn+0xacb74d)
#​10 0x00007f2bd1ac1347 lldb_private::IOHandlerEditline::GetLines(lldb_private::StringList&, bool&) (/home/segabor/.swiftenv/versions/swift-5.1-DEVELOPMENT-SNAPSHOT-2019-04-25-a/usr/bin/../lib/liblldb.so.7svn+0xa24347)
#​11 0x00007f2bd1ac1554 lldb_private::IOHandlerEditline::Run() (/home/segabor/.swiftenv/versions/swift-5.1-DEVELOPMENT-SNAPSHOT-2019-04-25-a/usr/bin/../lib/liblldb.so.7svn+0xa24554)
#​12 0x00007f2bd1aa4d06 lldb_private::Debugger::ExecuteIOHandlers() (/home/segabor/.swiftenv/versions/swift-5.1-DEVELOPMENT-SNAPSHOT-2019-04-25-a/usr/bin/../lib/liblldb.so.7svn+0xa07d06)
#​13 0x00007f2bd1aa908d lldb_private::Debugger::IOHandlerThread(void*)(/home/segabor/.swiftenv/versions/swift-5.1-DEVELOPMENT-SNAPSHOT-2019-04-25-a/usr/bin/../lib/liblldb.so.7svn+0xa0c08d)
#​14 0x00007f2bd1b71544 lldb_private::HostNativeThreadBase::ThreadCreateTrampoline(void*) (/home/segabor/.swiftenv/versions/swift-5.1-DEVELOPMENT-SNAPSHOT-2019-04-25-a/usr/bin/../lib/liblldb.so.7svn+0xad4544)
#​15 0x00007f2bd87ffa92 start_thread (/usr/lib/libpthread.so.0+0x7a92)
#​16 0x00007f2bd0a4bcd3 __GI___clone (/usr/lib/libc.so.6+0xfacd3)
Segmentation fault (core dumped)
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swift-ci commented May 1, 2019

Comment by Gábor Sebestyén (JIRA)

Tested on Ubuntu 18.04.2 LTS with Swift 5.0.1 release and it worked. So above crash occurs only on Arch Linux.

I checked out which libc6 version is being used, Ubuntu uses version 2.27, Arch Linux has a newer one 2.29-1.

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Comment by Gábor Sebestyén (JIRA)

I tried the reported sample with snapshot 5.1-DEVELOPMENT-SNAPSHOT-2019-05-21-a . It still crashes but yielding a slightly different stack trace:

[segabor@csihuhu ~]$ swift
 Welcome to Swift version 5.1-dev (LLVM 082dec2e22, Swift 4929726d30).
 Type :help for assistance.
 1> let str="apple"
 str: String = "apple"
 2> print(str.lldb: /home/segabor/Workspace/swift-dev/lldb/source/Symbol/SwiftASTContext.cpp:3082: swift::ASTContext *lldb_private::SwiftASTContext::GetASTContext(): Assertion `m_initialized_search_path_options && m_initialized_clang_importer_options && "search path options must be initialized before ClangImporter"' failed.
 #​0 0x000055c3e23e42e4 (lldb+0x222e4)
 #​1 0x000055c3e23e23dc (lldb+0x203dc)
 #​2 0x000055c3e23e4878 (lldb+0x22878)
 #​3 0x00007fe2a04db4d0 __restore_rt (/usr/lib/libpthread.so.0+0x124d0)
 #​4 0x00007fe29861b82f __GI_raise (/usr/lib/libc.so.6+0x3782f)
 #​5 0x00007fe298606672 __GI_abort (/usr/lib/libc.so.6+0x22672)
 #​6 0x00007fe298606548 _nl_load_domain.cold.0 (/usr/lib/libc.so.6+0x22548)
 #​7 0x00007fe298613db6 (/usr/lib/libc.so.6+0x2fdb6)
 #​8 0x00007fe299891f1e lldb_private::SwiftASTContext::GetASTContext() (/home/segabor/.swiftenv/versions/swift-5.1-DEVELOPMENT-SNAPSHOT-2019-05-21-a/usr/bin/../lib/liblldb.so.7svn+0xb61f1e)
 #​9 0x00007fe299893511 lldb_private::SwiftASTContext::SwiftASTContext(lldb_private::SwiftASTContext const&) (/home/segabor/.swiftenv/versions/swift-5.1-DEVELOPMENT-SNAPSHOT-2019-05-21-a/usr/bin/../lib/liblldb.so.7svn+0xb63511)
 #&#8203;10 0x00007fe299aafde9 lldb_private::SwiftREPL::CompleteCode(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, lldb_private::StringList&) (/home/segabor/.swiftenv/versions/swift-5.1-DEVELOPMENT-SNAPSHOT-2019-05-21-a/usr/bin/../lib/liblldb.so.7svn+0xd7fde9)
 #&#8203;11 0x00007fe2997e8168 lldb_private::REPL::IOHandlerComplete(lldb_private::IOHandler&, char const*, char const*, char const*, int, int, lldb_private::StringList&, lldb_private::StringList&) (/home/segabor/.swiftenv/versions/swift-5.1-DEVELOPMENT-SNAPSHOT-2019-05-21-a/usr/bin/../lib/liblldb.so.7svn+0xab8168)
 #&#8203;12 0x00007fe2997537d6 lldb_private::IOHandlerEditline::AutoCompleteCallback(char const*, char const*, char const*, int, int, lldb_private::StringList&, lldb_private::StringList&, void*) (/home/segabor/.swiftenv/versions/swift-5.1-DEVELOPMENT-SNAPSHOT-2019-05-21-a/usr/bin/../lib/liblldb.so.7svn+0xa237d6)
 #&#8203;13 0x00007fe2997f972b lldb_private::Editline::TabCommand(int) (/home/segabor/.swiftenv/versions/swift-5.1-DEVELOPMENT-SNAPSHOT-2019-05-21-a/usr/bin/../lib/liblldb.so.7svn+0xac972b)
 #&#8203;14 0x00007fe2997fbced lldb_private::Editline::ConfigureEditor(bool)::$13::_invoke(editline*, int) (/home/segabor/.swiftenv/versions/swift-5.1-DEVELOPMENT-SNAPSHOT-2019-05-21-a/usr/bin/../lib/liblldb.so.7svn+0xacbced)
 #&#8203;15 0x00007fe298375d33 el_wgets (/usr/lib/libedit.so.0+0x10d33)
 #&#8203;16 0x00007fe2983712d4 el_gets (/usr/lib/libedit.so.0+0xc2d4)
 #&#8203;17 0x00007fe2997fb42d lldb_private::Editline::GetLines(int, lldb_private::StringList&, bool&) (/home/segabor/.swiftenv/versions/swift-5.1-DEVELOPMENT-SNAPSHOT-2019-05-21-a/usr/bin/../lib/liblldb.so.7svn+0xacb42d)
 #&#8203;18 0x00007fe299753ff7 lldb_private::IOHandlerEditline::GetLines(lldb_private::StringList&, bool&) (/home/segabor/.swiftenv/versions/swift-5.1-DEVELOPMENT-SNAPSHOT-2019-05-21-a/usr/bin/../lib/liblldb.so.7svn+0xa23ff7)
 #&#8203;19 0x00007fe299754204 lldb_private::IOHandlerEditline::Run() (/home/segabor/.swiftenv/versions/swift-5.1-DEVELOPMENT-SNAPSHOT-2019-05-21-a/usr/bin/../lib/liblldb.so.7svn+0xa24204)
 #&#8203;20 0x00007fe299737a26 lldb_private::Debugger::ExecuteIOHandlers() (/home/segabor/.swiftenv/versions/swift-5.1-DEVELOPMENT-SNAPSHOT-2019-05-21-a/usr/bin/../lib/liblldb.so.7svn+0xa07a26)
 #&#8203;21 0x00007fe29973bdad lldb_private::Debugger::IOHandlerThread(void*) (/home/segabor/.swiftenv/versions/swift-5.1-DEVELOPMENT-SNAPSHOT-2019-05-21-a/usr/bin/../lib/liblldb.so.7svn+0xa0bdad)
 #&#8203;22 0x00007fe299804184 lldb_private::HostNativeThreadBase::ThreadCreateTrampoline(void*) (/home/segabor/.swiftenv/versions/swift-5.1-DEVELOPMENT-SNAPSHOT-2019-05-21-a/usr/bin/../lib/liblldb.so.7svn+0xad4184)
 #&#8203;23 0x00007fe2a04d0a92 start_thread (/usr/lib/libpthread.so.0+0x7a92)
 #&#8203;24 0x00007fe2986decd3 _GI__clone (/usr/lib/libc.so.6+0xfacd3)
 Aborted (core dumped)

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Comment by Gábor Sebestyén (JIRA)

Bug disappeared in snapshot `swift-5.1-DEVELOPMENT-SNAPSHOT-2019-06-21-a`. So I'm going to close the ticket.

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Comment by Gábor Sebestyén (JIRA)

As commented earlier issue is gone in snapshot `swift-5.1-DEVELOPMENT-SNAPSHOT-2019-06-21-a`, tab completion in REPL works as a charm.

@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
@shahmishal shahmishal transferred this issue from apple/swift May 7, 2022
This issue was closed.
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