JDevlieghere added a comment.
Hi Pavel,
After this landed I started seeing a bunch of reproducers fail with `SIGPIPE`.
I ignored the signal and added a check for `EPIPE` to the `::write` call in
`PipePosix.cpp`. Below is the thread state:
* thread #1, queue = 'com.apple.main-thread', stop reason = signal SIGPIPE
* frame #0: 0x00007fff6876c55e libsystem_kernel.dylib`__ulock_wait + 10
frame #1: 0x00007fff6882f5c2 libsystem_pthread.dylib`_pthread_join + 347
frame #2: 0x000000010115ef62
liblldb.11.0.0git.dylib`lldb_private::HostThreadPosix::Join(this=0x000000011e7ca490,
result=0x00007ffeefbfe290) at HostThreadPosix.cpp:28:15
frame #3: 0x000000010110b64f
liblldb.11.0.0git.dylib`lldb_private::HostThread::Join(this=0x000000011e9f09a0,
result=0x00007ffeefbfe290) at HostThread.cpp:21:27
frame #4: 0x00000001012ea5ba
liblldb.11.0.0git.dylib`lldb_private::Process::ControlPrivateStateThread(this=0x000000011e9f0818,
signal=1) at Process.cpp:3642:30
frame #5: 0x00000001012dbc81
liblldb.11.0.0git.dylib`lldb_private::Process::StopPrivateStateThread(this=0x000000011e9f0818)
at Process.cpp:3593:5
frame #6: 0x00000001012dc514
liblldb.11.0.0git.dylib`lldb_private::Process::Destroy(this=0x000000011e9f0818,
force_kill=true) at Process.cpp:3317:7
frame #7: 0x0000000100981cc1
liblldb.11.0.0git.dylib`lldb::SBProcess::Kill(this=0x000000011e767de0) at
SBProcess.cpp:662:35
* thread #2
* frame #0: 0x00007fff6876c4ce libsystem_kernel.dylib`__workq_kernreturn +
10
frame #1: 0x00007fff6882aaa1 libsystem_pthread.dylib`_pthread_wqthread +
390
frame #2: 0x00007fff68829b77 libsystem_pthread.dylib`start_wqthread + 15
* thread #3, name = '<lldb.process.internal-state(pid=47347)>'
* frame #0: 0x00007fff6876c55e libsystem_kernel.dylib`__ulock_wait + 10
frame #1: 0x00007fff6882f5c2 libsystem_pthread.dylib`_pthread_join + 347
frame #2: 0x000000010115ef62
liblldb.11.0.0git.dylib`lldb_private::HostThreadPosix::Join(this=0x000000011e7ca510,
result=0x0000000000000000) at HostThreadPosix.cpp:28:15
frame #3: 0x000000010110b64f
liblldb.11.0.0git.dylib`lldb_private::HostThread::Join(this=0x000000011e9f0e28,
result=0x0000000000000000) at HostThread.cpp:21:27
frame #4: 0x0000000100f46f4e
liblldb.11.0.0git.dylib`lldb_private::Communication::StopReadThread(this=0x000000011e9f0de8,
error_ptr=0x0000000000000000) at Communication.cpp:239:32
frame #5: 0x00000001012e9d95
liblldb.11.0.0git.dylib`lldb_private::Process::ShouldBroadcastEvent(this=0x000000011e9f0818,
event_ptr=0x000000011e76aa40) at Process.cpp:3390:27
frame #6: 0x00000001012e5e4f
liblldb.11.0.0git.dylib`lldb_private::Process::HandlePrivateEvent(this=0x000000011e9f0818,
event_sp=std::__1::shared_ptr<lldb_private::Event>::element_type @
0x000000011e76aa40 strong=2 weak=1) at Process.cpp:3697:33
frame #7: 0x00000001012eb147
liblldb.11.0.0git.dylib`lldb_private::Process::RunPrivateStateThread(this=0x000000011e9f0818,
is_secondary_thread=false) at Process.cpp:3891:7
frame #8: 0x00000001012ea2fa
liblldb.11.0.0git.dylib`lldb_private::Process::PrivateStateThread(arg=0x000000011e7c9a60)
at Process.cpp:3789:25
frame #9: 0x000000010110b45b
liblldb.11.0.0git.dylib`lldb_private::HostNativeThreadBase::ThreadCreateTrampoline(arg=0x000000011e7ca4e0)
at HostNativeThreadBase.cpp:68:10
frame #10: 0x000000010726ab83
liblldb.11.0.0git.dylib`lldb_private::HostThreadMacOSX::ThreadCreateTrampoline(arg=0x000000011e7ca4e0)
at HostThreadMacOSX.mm:68:10
* thread #4, name = '<lldb.comm.process.stdio>', stop reason = breakpoint 1.1
* frame #0: 0x000000010116071a
liblldb.11.0.0git.dylib`lldb_private::PipePosix::Write(this=0x000000011e7ca2b0,
buf=43698118819080247, size=1, bytes_written=0x00007000076908b8) at
PipePosix.cpp:312:7
frame #1: 0x0000000101156d15
liblldb.11.0.0git.dylib`lldb_private::ConnectionFileDescriptor::Disconnect(this=0x000000011e7ca210,
error_ptr=0x0000000000000000) at ConnectionFileDescriptorPosix.cpp:321:30
frame #2: 0x0000000100f454e6
liblldb.11.0.0git.dylib`lldb_private::Communication::Disconnect(this=0x000000011e9f0de8,
error_ptr=0x0000000000000000) at Communication.cpp:98:46
frame #3: 0x0000000100f46d4e
liblldb.11.0.0git.dylib`lldb_private::Communication::ReadThread(p=0x000000011e9f0de8)
at Communication.cpp:377:13
frame #4: 0x000000010110b45b
liblldb.11.0.0git.dylib`lldb_private::HostNativeThreadBase::ThreadCreateTrampoline(arg=0x000000011e7ca4e0)
at HostNativeThreadBase.cpp:68:10
frame #5: 0x000000010726ab83
liblldb.11.0.0git.dylib`lldb_private::HostThreadMacOSX::ThreadCreateTrampoline(arg=0x000000011e7ca4e0)
at HostThreadMacOSX.mm:68:10
frame #6: 0x00007fff6882e109 libsystem_pthread.dylib`_pthread_start + 148
frame #7: 0x00007fff68829b8b libsystem_pthread.dylib`thread_start + 15
Any chance you might know what's going on here?
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D77295/new/
https://reviews.llvm.org/D77295
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