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setting a bp on current function, Pdb stops at next line although no bp #58997

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xdegaye mannequin opened this issue May 12, 2012 · 3 comments
Closed

setting a bp on current function, Pdb stops at next line although no bp #58997

xdegaye mannequin opened this issue May 12, 2012 · 3 comments
Labels
stdlib Python modules in the Lib dir type-bug An unexpected behavior, bug, or error

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@xdegaye
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Mannequin

xdegaye mannequin commented May 12, 2012

BPO 14792
Nosy @birkenfeld, @xdegaye
Files
  • pdb_default.patch
    		•

    Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.

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    GitHub fields:

    assignee = None
closed_at = None
created_at = <Date 2012-05-12.19:50:48.050>
labels = ['type-bug', 'library']
title = 'setting a bp on current function, Pdb stops at next line although no bp'
updated_at = <Date 2012-05-25.11:55:09.740>
user = 'https://github.com/xdegaye'

    bugs.python.org fields:

    activity = <Date 2012-05-25.11:55:09.740>
actor = 'xdegaye'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)']
creation = <Date 2012-05-12.19:50:48.050>
creator = 'xdegaye'
dependencies = []
files = ['25553']
hgrepos = []
issue_num = 14792
keywords = ['patch']
message_count = 2.0
messages = ['160489', '161572']
nosy_count = 2.0
nosy_names = ['georg.brandl', 'xdegaye']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue14792'
versions = ['Python 2.7', 'Python 3.2', 'Python 3.3']
    @xdegaye
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    xdegaye mannequin commented May 12, 2012

    Setting a breakpoint on a function from within that functions makes
    pdb to stop at the following line (where no breakpoint is set) after a
    continue command. In the following test pdb stops at line 3 where
    there is no breakpoint.

    === main.py =================================

    def foo():
    x = 1
    x = 2

foo()

    =================================================

    $ python -m pdb main.py
> /path_to/main.py(1)<module>()
-> def foo():
(Pdb) import sys; print(sys.version)
3.3.0a3+ (default:4e9680570be8, May 11 2012, 12:09:15) 
[GCC 4.3.2]
(Pdb) break 2
Breakpoint 1 at /path_to/main.py:2
(Pdb) continue
> /path_to/main.py(2)foo()
-> x = 1
(Pdb) break foo
Breakpoint 2 at /path_to/main.py:1
(Pdb) continue
> /path_to/main.py(3)foo()
-> x = 2
(Pdb) where
  /home/xavier/src/cpython/cpython-hg-default/Lib/bdb.py(405)run()
-> exec(cmd, globals, locals)
  <string>(1)<module>()
  /path_to/main.py(5)<module>()
-> foo()
> /path_to/main.py(3)foo()
-> x = 2
(Pdb) quit

    =================================================

    The attached patch fixes the problem. The patch includes a test case.

    @xdegaye xdegaye mannequin added stdlib Python modules in the Lib dir type-bug An unexpected behavior, bug, or error labels May 12, 2012
    @xdegaye
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    xdegaye mannequin commented May 25, 2012

    Parsing the modules source seems a better way to fix this problem, see bpo-14913.

    @ezio-melotti ezio-melotti transferred this issue from another repository Apr 10, 2022
    @gaogaotiantian
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    This is already fixed as the breakpoint on functions already uses source parsing.

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