logilab-astng #37105 Crash on AttributeError: 'NoneType' object has no attribute '_infer_name' [not validated]

When running pylint 0.21.1 in combination with logilab-astng 0.20.1 and logilab-common 0.50.3 on the following code using python 2.5.1:

def f(): return
def g(p): return p
def h(): i = f(); j = g(i); j.a

logilab-astng crashes with the following exception:

Traceback (most recent call last):
 File "/tmp/pylint-0.21.1/bin/pylint", line 4, in <module>
   lint.Run(sys.argv[1:])
 File "/tmp/pylint-0.21.1/lib/python2.5/site-packages/pylint/lint.py", line 848, in __init__
   linter.check(args)
 File "/tmp/pylint-0.21.1/lib/python2.5/site-packages/pylint/lint.py", line 482, in check
   self.check_astng_module(astng, walker, rawcheckers)
 File "/tmp/pylint-0.21.1/lib/python2.5/site-packages/pylint/lint.py", line 555, in check_astng_module
   walker.walk(astng)
 File "/tmp/pylint-0.21.1/lib/python2.5/site-packages/pylint/utils.py", line 518, in walk
   self.walk(child)
 File "/tmp/pylint-0.21.1/lib/python2.5/site-packages/pylint/utils.py", line 518, in walk
   self.walk(child)
 File "/tmp/pylint-0.21.1/lib/python2.5/site-packages/pylint/utils.py", line 518, in walk
   self.walk(child)
 File "/tmp/pylint-0.21.1/lib/python2.5/site-packages/pylint/utils.py", line 515, in walk
   cb(astng)
 File "/tmp/pylint-0.21.1/lib/python2.5/site-packages/pylint/checkers/typecheck.py", line 130, in visit_getattr
   infered = list(node.expr.infer())
 File "/tmp/logilab/lib/python2.5/site-packages/logilab/astng/bases.py", line 303, in wrapped
   for res in _func(node, context, **kwargs):
 File "/tmp/logilab/lib/python2.5/site-packages/logilab/astng/bases.py", line 130, in _infer_stmts
   for infered in stmt.infer(context):
 File "/tmp/logilab/lib/python2.5/site-packages/logilab/astng/bases.py", line 303, in wrapped
   for res in _func(node, context, **kwargs):
 File "/tmp/logilab/lib/python2.5/site-packages/logilab/astng/bases.py", line 130, in _infer_stmts
   for infered in stmt.infer(context):
 File "/tmp/logilab/lib/python2.5/site-packages/logilab/astng/bases.py", line 303, in wrapped
   for res in _func(node, context, **kwargs):
 File "/tmp/logilab/lib/python2.5/site-packages/logilab/astng/bases.py", line 327, in wrapper
   for node in func(*args, **kwargs):
 File "/tmp/logilab/lib/python2.5/site-packages/logilab/astng/inference.py", line 209, in infer_callfunc
   for infered in callee.infer_call_result(self, callcontext):
 File "/tmp/logilab/lib/python2.5/site-packages/logilab/astng/scoped_nodes.py", line 591, in infer_call_result
   for infered in returnnode.value.infer(context):
 File "/tmp/logilab/lib/python2.5/site-packages/logilab/astng/bases.py", line 303, in wrapped
   for res in _func(node, context, **kwargs):
 File "/tmp/logilab/lib/python2.5/site-packages/logilab/astng/bases.py", line 130, in _infer_stmts
   for infered in stmt.infer(context):
 File "/tmp/logilab/lib/python2.5/site-packages/logilab/astng/bases.py", line 303, in wrapped
   for res in _func(node, context, **kwargs):
 File "/tmp/logilab/lib/python2.5/site-packages/logilab/astng/bases.py", line 128, in _infer_stmts
   context.lookupname = stmt._infer_name(frame, name)
AttributeError: 'NoneType' object has no attribute '_infer_name'
priorityimportant
typebug
done in0.22.0
load0.300
load left0.000
closed by#bdc9ca4f5b05 fix: returning nothing should be infered as Const(None): closes #37105

Workflow history

from state (3)to statecommentdateUser
validation pendingnot validated2011/07/07 13:47 UTCsthenault
donevalidation pending

version published

2010/11/15 17:47 UTC 
opendone2010/10/27 15:43 UTCeanclin

Identical tickets

Comments

  • 2011/05/30 20:42, written by anon

    Similar crash for pylint 0.23.0 and astng 0.21.1, Python 2.6 (reproduced by `make pylint` in trac trunk r10708):
    ...
    ************* Module trac.core
    W0404: 42:TracError.__init__: Reimport 'gettext' (imported line 59)
    Traceback (most recent call last):
    File "C:\Dev\Python265\Scripts\pylint", line 5, in <module>
    pkg_resources.run_script('pylint==0.23.0', 'pylint')
    File "build\bdist.win32\egg\pkg_resources.py", line 489, in run_script
    File "build\bdist.win32\egg\pkg_resources.py", line 1207, in run_script
    File "c:\dev\python265\lib\site-packages\pylint-0.23.0-py2.6.egg\EGG-INFO\scripts\pylint", line 4, in <module>
    lint.Run(sys.argv[1:])
    File "C:\Dev\Python265\lib\site-packages\pylint-0.23.0-py2.6.egg\pylint\lint.py", line 860, in __init__
    linter.check(args)
    File "C:\Dev\Python265\lib\site-packages\pylint-0.23.0-py2.6.egg\pylint\lint.py", line 493, in check
    self.check_astng_module(astng, walker, rawcheckers)
    File "C:\Dev\Python265\lib\site-packages\pylint-0.23.0-py2.6.egg\pylint\lint.py", line 565, in check_astng_module
    walker.walk(astng)
    File "C:\Dev\Python265\lib\site-packages\pylint-0.23.0-py2.6.egg\pylint\utils.py", line 524, in walk
    self.walk(child)
    File "C:\Dev\Python265\lib\site-packages\pylint-0.23.0-py2.6.egg\pylint\utils.py", line 524, in walk
    self.walk(child)
    File "C:\Dev\Python265\lib\site-packages\pylint-0.23.0-py2.6.egg\pylint\utils.py", line 524, in walk
    self.walk(child)
    File "C:\Dev\Python265\lib\site-packages\pylint-0.23.0-py2.6.egg\pylint\utils.py", line 524, in walk
    self.walk(child)
    File "C:\Dev\Python265\lib\site-packages\pylint-0.23.0-py2.6.egg\pylint\utils.py", line 524, in walk
    self.walk(child)
    File "C:\Dev\Python265\lib\site-packages\pylint-0.23.0-py2.6.egg\pylint\utils.py", line 521, in walk
    cb(astng)
    File "C:\Dev\Python265\lib\site-packages\pylint-0.23.0-py2.6.egg\pylint\checkers\typecheck.py", line 236, in visit_callfunc
    called = safe_infer(node.func)
    File "C:\Dev\Python265\lib\site-packages\pylint-0.23.0-py2.6.egg\pylint\checkers\utils.py", line 34, in safe_infer
    value = inferit.next()
    File "C:\Dev\Python265\lib\site-packages\logilab_astng-0.21.1-py2.6.egg\logilab\astng\bases.py", line 293, in wrapped
    for res in _func(node, context, **kwargs):
    File "C:\Dev\Python265\lib\site-packages\logilab_astng-0.21.1-py2.6.egg\logilab\astng\bases.py", line 317, in wrapper
    for node in func(*args, **kwargs):
    File "C:\Dev\Python265\lib\site-packages\logilab_astng-0.21.1-py2.6.egg\logilab\astng\inference.py", line 211, in infer_getattr
    for owner in self.expr.infer(context):
    File "C:\Dev\Python265\lib\site-packages\logilab_astng-0.21.1-py2.6.egg\logilab\astng\bases.py", line 293, in wrapped
    for res in _func(node, context, **kwargs):
    File "C:\Dev\Python265\lib\site-packages\logilab_astng-0.21.1-py2.6.egg\logilab\astng\bases.py", line 317, in wrapper
    for node in func(*args, **kwargs):
    File "C:\Dev\Python265\lib\site-packages\logilab_astng-0.21.1-py2.6.egg\logilab\astng\inference.py", line 211, in infer_getattr
    for owner in self.expr.infer(context):
    File "C:\Dev\Python265\lib\site-packages\logilab_astng-0.21.1-py2.6.egg\logilab\astng\bases.py", line 293, in wrapped
    for res in _func(node, context, **kwargs):
    File "C:\Dev\Python265\lib\site-packages\logilab_astng-0.21.1-py2.6.egg\logilab\astng\bases.py", line 106, in _infer_stmts
    for infered in stmt.infer(context):
    File "C:\Dev\Python265\lib\site-packages\logilab_astng-0.21.1-py2.6.egg\logilab\astng\bases.py", line 293, in wrapped
    for res in _func(node, context, **kwargs):
    File "C:\Dev\Python265\lib\site-packages\logilab_astng-0.21.1-py2.6.egg\logilab\astng\bases.py", line 104, in _infer_stmts
    context.lookupname = stmt._infer_name(frame, name)
    AttributeError: 'NoneType' object has no attribute '_infer_name'

    • 2011/07/21 14:13, written by anon

      Problem fixed with pylint-0.24.0 and logilab-astng-0.22.0, `make pylint` runs through. Thanks!

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Ticket #37105 - latest update on 2011/07/21, created on 2010/07/25 by Gerard Lommerse