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Crash on editing Variable settings #233

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eugenezastrogin opened this issue Apr 1, 2017 · 2 comments · May be fixed by #465
Open

Crash on editing Variable settings #233

eugenezastrogin opened this issue Apr 1, 2017 · 2 comments · May be fixed by #465

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@eugenezastrogin
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eugenezastrogin commented Apr 1, 2017 •
edited
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Crashes on certain repeatable sequence of actions.
Steps to reproduce:

  1. load http://ideone.com/DVs5cv
  2. start pudb (pudb3 script.py)
  3. Run till the end (repeated n, then examine post-mortem mode)
  4. Switch to Variables (V)
  5. Press enter on any Variable in the list

Traceback:

Traceback (most recent call last):
  File "/usr/bin/pudb3", line 11, in <module>
    load_entry_point('pudb==2017.1.1', 'console_scripts', 'pudb3')()
  File "/usr/lib/python3.6/site-packages/pudb/run.py", line 32, in main
    steal_output=options.steal_output)
  File "/usr/lib/python3.6/site-packages/pudb/__init__.py", line 127, in runscript
    dbg.interaction(None, sys.exc_info(), show_exc_dialog=False)
  File "/usr/lib/python3.6/site-packages/pudb/debugger.py", line 339, in interaction
    show_exc_dialog=show_exc_dialog)
  File "/usr/lib/python3.6/site-packages/pudb/debugger.py", line 2079, in call_with_ui
    return f(*args, **kwargs)
  File "/usr/lib/python3.6/site-packages/pudb/debugger.py", line 2307, in interaction
    self.event_loop()
  File "/usr/lib/python3.6/site-packages/pudb/debugger.py", line 2273, in event_loop
    toplevel.keypress(self.size, k)
  File "/usr/lib/python3.6/site-packages/pudb/ui_tools.py", line 96, in keypress
    result = self._w.keypress(size, key)
  File "/usr/lib64/python3.6/site-packages/urwid/container.py", line 1128, in keypress
    return self.body.keypress( (maxcol, remaining), key )
  File "/usr/lib64/python3.6/site-packages/urwid/container.py", line 2269, in keypress
    key = w.keypress((mc,) + size[1:], key)
  File "/usr/lib/python3.6/site-packages/pudb/ui_tools.py", line 96, in keypress
    result = self._w.keypress(size, key)
  File "/usr/lib64/python3.6/site-packages/urwid/container.py", line 1587, in keypress
    key = self.focus.keypress(tsize, key)
  File "/usr/lib64/python3.6/site-packages/urwid/container.py", line 1587, in keypress
    key = self.focus.keypress(tsize, key)
  File "/usr/lib/python3.6/site-packages/pudb/ui_tools.py", line 101, in keypress
    return handler(self, size, key)
  File "/usr/lib/python3.6/site-packages/pudb/debugger.py", line 789, in edit_inspector_detail
    fvi = self.get_frame_var_info(read_only=False)
  File "/usr/lib/python3.6/site-packages/pudb/var_view.py", line 536, in get_frame_var_info
    ssid = self.debugger.get_stack_situation_id()
  File "/usr/lib/python3.6/site-packages/pudb/debugger.py", line 342, in get_stack_situation_id
    return str(id(self.stack[self.curindex][0].f_code))
IndexError: list index out of range
@eugenezastrogin eugenezastrogin changed the title Periodically crashes Crash on editing Variable settings Apr 1, 2017
@asmeurer
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asmeurer commented Apr 1, 2017

Seems to happen with any script examining a variable in post-mortem mode.

@qhuy4119
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qhuy4119 commented Jul 14, 2021 •
edited
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This is because when in post-mortem Debugger.stack is empty.

I can make it not crash by restoring Debugger.bottom_frame to Debugger.stack in post-mortem. However, at that point you can only inspect attributes of the module object itself, which in this case are a function and 2 classes (checkio, Wall, and WallPart)

@qhuy4119 qhuy4119 linked a pull request Jul 14, 2021 that will close this issue
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Fix crash when expanding variables in post-mortem qhuy4119/pudb
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@asmeurer @eugenezastrogin @qhuy4119