[New-bugs-announce] [issue27419] Bugs in PyImport_ImportModuleLevelObject

[Serhiy Storchaka]

New submission from Serhiy Storchaka:

1. If __package__ is None, and __spec__ is None or not set, and emitting ImportWarning raises an error, package is a borrowed reference to None, and it is decrefed. As result, the reference count of None is decremented.

2. __import__ is looked in globals or builtins and passed to _find_and_load(), _handle_fromlist() or called with highest package name. This doesn't match Python implementation. Python implementation uses _gcd_import which implements the original __import__, and isn't affected by overriding __import__ in globals or builtins.

----------
components: Interpreter Core
files: fix-__import__.patch
keywords: patch
messages: 269564
nosy: brett.cannon, eric.snow, ncoghlan, serhiy.storchaka
priority: normal
severity: normal
stage: patch review
status: open
title: Bugs in PyImport_ImportModuleLevelObject
type: behavior
versions: Python 3.5, Python 3.6
Added file: http://bugs.python.org/file43585/fix-__import__.patch

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue27419>
_______________________________________