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Duplicate frame in traceback of exception raised inside trace function #102818

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@chgnrdv

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@chgnrdv
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First appeared in e028ae9.
Reproducer:

import sys

def f():
    pass

def trace(frame, event, arg):
    raise ValueError()

sys.settrace(trace)
f()

Before 'bad' commit (3e43fac):

Traceback (most recent call last):
  File "/home/.../trace_tb_bug.py", line 10, in <module>
    f()
    ^^^
  File "/home/.../trace_tb_bug.py", line 3, in f
    def f():
  File "/home/.../trace_tb_bug.py", line 7, in trace
    raise ValueError()
    ^^^^^^^^^^^^^^^^^^
ValueError

After 'bad' commit (e028ae9):

Traceback (most recent call last):
  File "/home/.../trace_tb_bug.py", line 10, in <module>
    f()
    ^^^
  File "/home/.../trace_tb_bug.py", line 3, in f
    def f():
    
  File "/home/.../trace_tb_bug.py", line 3, in f
    def f():
    
  File "/home/.../trace_tb_bug.py", line 7, in trace
    raise ValueError()
    ^^^^^^^^^^^^^^^^^^
ValueError

3.11.0 release and main (039714d) also lack pointers to error locations, but this probably needs a different issue:

Traceback (most recent call last):
  File "/home/.../trace_tb_bug.py", line 10, in <module>
    f()
  File "/home/.../trace_tb_bug.py", line 3, in f
    def f():
    
  File "/home/.../trace_tb_bug.py", line 3, in f
    def f():
    
  File "/home/.../trace_tb_bug.py", line 7, in trace
    raise ValueError()
ValueError

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