Debugger not starting

[tomas-goncalves]

Hi I am trying to start the debugger but I keep getting two errors, one in the debug console "ERROR: Unable to start debugging. Unexpected LLDB output from command "-exec-run". process exited with status -1 (attach failed ((os/kern) invalid argument))" and another one about the debug server dying. The verbose log also talks about this and without verbose I get the error "[2021-10-16T16:11:45.210Z ERROR codelldb::debug_session] process exited with status -1 (debugserver died with signal SIGSEGV)". I am using cmake to build the file and this is my launch.json. The build file runs without debbuging perfectly.

{
  // Use IntelliSense to learn about possible attributes.
  // Hover to view descriptions of existing attributes.
  // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
  "version": "0.2.0",
  "configurations": [
    {
      "name": "Launch",
      "type": "lldb",
      "request": "launch",
      "program": "${workspaceFolder}/build/learnCpp",
      "args": []
    },
  ]
}

The verbose log is

configuration: {
  type: 'lldb',
  request: 'launch',
  name: 'Debug',
  program: 'build/learnCpp',
  args: [],
  cwd: '${workspaceFolder}',
  __configurationTarget: 5,
  relativePathBase: '/Users/myuser/dev/learnCpp'
}
liblldb: /Users/myuser/.vscode/extensions/vadimcn.vscode-lldb-1.6.8/lldb/lib/liblldb.dylib
environment: {}
params: { evaluateForHovers: true, commandCompletions: true }
Listening on port 64406
[2021-10-16T16:03:34.283Z DEBUG codelldb] New debug session
INFO(Python) 13:03:34 formatters: Initializing
INFO(Python) 13:03:34 formatters.rust: Initializing
[2021-10-16T16:03:34.468Z DEBUG codelldb::dap_codec] --> {"command":"initialize","arguments":{"clientID":"vscode","clientName":"Visual Studio Code","adapterID":"lldb","pathFormat":"path","linesStartAt1":true,"columnsStartAt1":true,"supportsVariableType":true,"supportsVariablePaging":true,"supportsRunInTerminalRequest":true,"locale":"en-us","supportsProgressReporting":true,"supportsInvalidatedEvent":true,"supportsMemoryReferences":true},"type":"request","seq":1}
[2021-10-16T16:03:34.469Z DEBUG codelldb::dap_codec] <-- {"type":"response","request_seq":1,"success":true,"command":"initialize","body":{"exceptionBreakpointFilters":[{"default":true,"filter":"cpp_throw","label":"C++: on throw"},{"default":false,"filter":"cpp_catch","label":"C++: on catch"}],"supportTerminateDebuggee":true,"supportsCancelRequest":true,"supportsCompletionsRequest":true,"supportsConditionalBreakpoints":true,"supportsConfigurationDoneRequest":true,"supportsDataBreakpoints":true,"supportsDelayedStackTraceLoading":true,"supportsEvaluateForHovers":true,"supportsFunctionBreakpoints":true,"supportsGotoTargetsRequest":true,"supportsHitConditionalBreakpoints":true,"supportsLogPoints":true,"supportsReadMemoryRequest":true,"supportsRestartFrame":true,"supportsSetVariable":true}}
[2021-10-16T16:03:34.471Z DEBUG codelldb::dap_codec] --> {"command":"launch","arguments":{"type":"lldb","request":"launch","name":"Debug","program":"build/learnCpp","args":[],"cwd":"/Users/myuser/dev/learnCpp","__configurationTarget":5,"relativePathBase":"/Users/myuser/dev/learnCpp","_adapterSettings":{"displayFormat":"auto","showDisassembly":"auto","dereferencePointers":true,"suppressMissingSourceFiles":true,"evaluationTimeout":5,"consoleMode":"commands","sourceLanguages":null,"terminalPromptClear":null,"evaluateForHovers":true,"commandCompletions":true,"reproducer":false},"__sessionId":"ee381340-2e39-418a-a03a-ec6d87677b35"},"type":"request","seq":2}
[2021-10-16T16:03:34.471Z DEBUG codelldb::dap_codec] <-- {"type":"event","seq":1,"event":"capabilities","body":{"capabilities":{"exceptionBreakpointFilters":[{"default":true,"filter":"cpp_throw","label":"C++: on throw"},{"default":false,"filter":"cpp_catch","label":"C++: on catch"}],"supportTerminateDebuggee":true,"supportsCancelRequest":true,"supportsCompletionsRequest":true,"supportsConditionalBreakpoints":true,"supportsConfigurationDoneRequest":true,"supportsDataBreakpoints":true,"supportsDelayedStackTraceLoading":true,"supportsEvaluateForHovers":true,"supportsFunctionBreakpoints":true,"supportsGotoTargetsRequest":true,"supportsHitConditionalBreakpoints":true,"supportsLogPoints":true,"supportsReadMemoryRequest":true,"supportsRestartFrame":true,"supportsSetVariable":true}}}
[2021-10-16T16:03:34.510Z DEBUG codelldb::debug_session] Debug event: 0x600001ac25d8 Event: broadcaster = 0x107809220 (lldb.target), type = 0x00000002 (modules-loaded), data = {learnCpp}
[2021-10-16T16:03:34.510Z DEBUG codelldb::dap_codec] <-- {"type":"event","seq":2,"event":"initialized"}
[2021-10-16T16:03:34.510Z DEBUG codelldb::dap_codec] <-- {"type":"event","seq":3,"event":"module","body":{"module":{"addressRange":"FFFFFFFFFFFFFFFF","id":"FFFFFFFFFFFFFFFF","name":"learnCpp","path":"/Users/myuser/dev/learnCpp/build/learnCpp","symbolFilePath":"/Users/myuser/dev/learnCpp/build/learnCpp","symbolStatus":"Symbols loaded."},"reason":"new"}}
[2021-10-16T16:03:34.510Z DEBUG codelldb::dap_codec] <-- {"type":"request","seq":4,"command":"runInTerminal","arguments":{"args":["/Users/myuser/.vscode/extensions/vadimcn.vscode-lldb-1.6.8/adapter/codelldb","terminal-agent","--port=64408"],"cwd":"","kind":"integrated","title":"Debug"}}
[2021-10-16T16:03:34.513Z DEBUG codelldb::dap_codec] --> {"command":"setFunctionBreakpoints","arguments":{"breakpoints":[]},"type":"request","seq":3}
[2021-10-16T16:03:34.513Z DEBUG codelldb::dap_codec] <-- {"type":"response","request_seq":3,"success":true,"command":"setFunctionBreakpoints","body":{"breakpoints":[]}}
[2021-10-16T16:03:34.595Z DEBUG codelldb::dap_codec] --> {"command":"setDataBreakpoints","arguments":{"breakpoints":[]},"type":"request","seq":4}
[2021-10-16T16:03:34.595Z DEBUG codelldb::dap_codec] <-- {"type":"response","request_seq":4,"success":true,"command":"setDataBreakpoints","body":{"breakpoints":[]}}
[2021-10-16T16:03:34.632Z DEBUG codelldb::dap_codec] --> {"command":"setExceptionBreakpoints","arguments":{"filters":["cpp_throw"]},"type":"request","seq":5}
[2021-10-16T16:03:34.635Z DEBUG codelldb::dap_codec] <-- {"type":"response","request_seq":5,"success":true,"command":"setExceptionBreakpoints"}
[2021-10-16T16:03:34.636Z DEBUG codelldb::debug_session] Debug event: 0x600001adcfd8 Event: broadcaster = 0x107809220 (lldb.target), type = 0x00000001 (breakpoint-changed), data = {}
[2021-10-16T16:03:34.639Z DEBUG codelldb::dap_codec] --> {"command":"configurationDone","type":"request","seq":6}
[2021-10-16T16:03:34.643Z DEBUG codelldb::dap_codec] <-- {"type":"response","request_seq":6,"success":true,"command":"configurationDone"}
[2021-10-16T16:03:34.653Z DEBUG codelldb::dap_codec] --> {"command":"threads","type":"request","seq":7}
[2021-10-16T16:03:34.653Z DEBUG codelldb::dap_codec] <-- {"type":"response","request_seq":7,"success":true,"command":"threads","body":{"threads":[]}}
[2021-10-16T16:03:35.680Z DEBUG codelldb::dap_codec] --> {"type":"response","seq":8,"command":"runInTerminal","request_seq":4,"success":true,"body":{"shellProcessId":90675}}
[2021-10-16T16:03:35.701Z DEBUG codelldb::dap_codec] <-- {"type":"event","seq":5,"event":"output","body":{"output":"Launching: /Users/myuser/dev/learnCpp/build/learnCpp\n"}}
[2021-10-16T16:03:36.264Z ERROR codelldb::debug_session] process exited with status -1 (debugserver died with signal SIGSEGV)
[2021-10-16T16:03:36.264Z DEBUG codelldb::dap_codec] <-- {"type":"response","request_seq":2,"success":false,"command":"","message":"process exited with status -1 (debugserver died with signal SIGSEGV)","show_user":true}
[2021-10-16T16:03:36.291Z DEBUG codelldb::dap_codec] --> {"command":"disconnect","arguments":{"restart":false},"type":"request","seq":9}
[2021-10-16T16:03:36.291Z DEBUG codelldb::dap_codec] <-- {"type":"response","request_seq":9,"success":true,"command":"disconnect"}
[2021-10-16T16:03:36.769Z DEBUG codelldb::dap_session] Client has disconnected
[2021-10-16T16:03:36.769Z DEBUG codelldb::debug_session] End of the requests stream
[2021-10-16T16:03:36.769Z DEBUG codelldb::debug_session] DebugSession::drop()
[2021-10-16T16:03:36.769Z DEBUG codelldb] Session has ended
[2021-10-16T16:03:36.781Z DEBUG codelldb] Exiting
Debug adapter exit code=0, signal=null.

[tomas-goncalves]

I have managed to fix it but this seems more like a hack, deleting the debugserver inside bin. Maybe this should be added to the troubleshooting guide for now, I am also using macos Monterey, so that may be the cause.

[song-zixuan]

The bug still exist after deleting the debugserver and I have no idea how to deal with it...

[747745124]

did u set your launch.json ‘type’ to lldb?

[song-zixuan]

Yeah. Surprisingly the problem get solved by reloading all the extensions. it might be something related to Migration Assistance. Thanks!

[747745124]

This works for my new Macbook pro with monterey, be sure to delete the file /Users/myuser/.vscode/extensions/vadimcn.vscode-lldb-1.6.8/lldb/binary/debugserver

[wolfee001]

same for me; two days of googling after found this. should be in troubleshoot! (or should be fixed for monterey :) )

[xiaocai506]

please enable Developer Mode on your Mac by the command “sudo DevToolsSecurity -enable”.