Bug 1452689

Summary: Debugging with LLDB hangs
Product: [Fedora] Fedora Reporter: Gavin Rosenbush <grosenbush>
Component: qt-creatorAssignee: Itamar Reis Peixoto <itamar>
Status: CLOSED NOTABUG QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: unspecified    
Version: 25CC: davejohansen, grosenbush, helio, itamar, jreznik, manisandro, rdieter
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OS: Linux   
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Last Closed: 2017-05-20 21:02:57 UTC Type: Bug
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Patch to qt-creator.spec to require python-lldb none

Description Gavin Rosenbush 2017-05-19 13:24:14 UTC
Created attachment 1280420 [details]
Patch to qt-creator.spec to require python-lldb

Description of problem:
Debugging won't start if LLDB is used as the debugger.

Version-Release number of selected component (if applicable):
4.1.0-2.fc25.2 
The bug may be present in other Fedora versions. I've only tested with 25.

How reproducible: Always

Steps to Reproduce:
1. Create a project and set debugger to LLDB 
2. Start debugging

Actual results:
"Debugging starts" is displayed, but the process to be debugged is not launched and no further feedback is given, unless you view the debugger log, where you see the following:

ERROR: Lldb stderr: Traceback (most recent call last):
  File "<string>", line 1, in <module>

ERROR: Lldb stderr: ImportError: No module named lldb.embedded_interpreter
Traceback (most recent call last):
  File "<string>", line 1, in <module>
NameError: name 'run_one_line' is not defined
Traceback (most recent call last):
  File "<string>", line 1, in <module>
NameError: name 'run_one_line' is not defined
Traceback (most recent call last):
  File "<string>", line 1, in <module>
NameError: name 'run_one_line' is not defined
Traceback (most recent call last):
  File "<string>", line 1, in <module>
NameError: name 'run_one_line' is not defined
Traceback (most recent call last):
  File "<string>", line 1, in <module>
NameError: name 'run_one_line' is not defined
Traceback (most recent call last):
  File "<string>", line 1, in <module>
NameError: name 'run_one_line' is not defined

ERROR: Lldb stderr: error: python failed attempting to evaluate 'print('@\nlldbstartupok@\n')'

Expected results:
Debugging begins successfully.

Additional info:
The solution is to install package 'python-lldb'. Attaching a proposed (untested) patch to qt-creator.spec.

Comment 1 Sandro Mani 2017-05-20 21:02:57 UTC
Hmm not sure here. LLDB itself isn't a dependency of qt-creator, and indeed the same way qt-creator doesn't require a specific compiler, it should also not require a specific debugger. The user is free to install LLDB if he wishes to use it, that also python-lldb is required is something I'm afraid we cannot control with the qt-creator packaging.

Closing as NOTABUG; feel free to reopen if you have another opinion.