Python version: 2.6
Platform: Windows XP

Stepping into a throw of an iterator with the debugger
does not work.

To reproduce:

1. Run the attached script
2. type 's' for single step once you see the debugger
prompt.

I am getting this backtrace:

  File "C:\bwm\Cruiser\play\microthreads\post.py", line
24, in <module>
    it.throw(E, E())
  File "C:\bwm\Cruiser\play\microthreads\post.py", line
7, in f1
    (yield (2,(self.f2,(exc_class,))))
  File "C:\Python25\lib\bdb.py", line 50, in trace_dispatch
    return self.dispatch_call(frame, arg)
  File "C:\Python25\lib\bdb.py", line 79, in dispatch_call
    self.user_call(frame, arg)
  File "C:\Python25\lib\pdb.py", line 134, in user_call
    self.interaction(frame, None)
  File "C:\Python25\lib\pdb.py", line 185, in interaction
    self.setup(frame, traceback)
  File "C:\Python25\lib\pdb.py", line 109, in setup
    self.stack, self.curindex = self.get_stack(f, t)
  File "C:\Python25\lib\bdb.py", line 318, in get_stack
    i = max(0, len(stack) - 1)

I got the Python version wrong above. The problem has been observed with Python 2.5, not 2.6 (don't know about other Python versions).

The problem does reproduce with 2.5.1, but not with 2.5.2.

This is actually the same as issue1265 (since closing a paused generator
throws it a GeneratorExit exception, and of course pdb must use
generators somewhere)