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| author | Miss Islington (bot) <31488909+miss-islington@users.noreply.github.com> | 2023-09-10 17:41:19 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2023-09-10 17:41:19 (GMT) |
| commit | b070d73ff20df210eb41e3e5104ba6c355d9584e (patch) | |
| tree | c44d9271c15aff1dab742ab44b14a9420313c33d /Lib/codecs.py | |
| parent | c20658249da47408c2d2455de87d7e70445cf3f0 (diff) | |
| download | cpython-b070d73ff20df210eb41e3e5104ba6c355d9584e.zip cpython-b070d73ff20df210eb41e3e5104ba6c355d9584e.tar.gz cpython-b070d73ff20df210eb41e3e5104ba6c355d9584e.tar.bz2 | |
[3.11] gh-50644: Forbid pickling of codecs streams (GH-109180) (GH-109232)
Attempts to pickle or create a shallow or deep copy of codecs streams
now raise a TypeError.
Previously, copying failed with a RecursionError, while pickling
produced wrong results that eventually caused unpickling to fail with
a RecursionError.
(cherry picked from commit d6892c2b9263b39ea1c7905667942914b6a24b2c)
Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
Diffstat (limited to 'Lib/codecs.py')
| -rw-r--r-- | Lib/codecs.py | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/Lib/codecs.py b/Lib/codecs.py index 3b173b6..c6165fc 100644 --- a/Lib/codecs.py +++ b/Lib/codecs.py @@ -414,6 +414,9 @@ class StreamWriter(Codec): def __exit__(self, type, value, tb): self.stream.close() + def __reduce_ex__(self, proto): + raise TypeError("can't serialize %s" % self.__class__.__name__) + ### class StreamReader(Codec): @@ -663,6 +666,9 @@ class StreamReader(Codec): def __exit__(self, type, value, tb): self.stream.close() + def __reduce_ex__(self, proto): + raise TypeError("can't serialize %s" % self.__class__.__name__) + ### class StreamReaderWriter: @@ -750,6 +756,9 @@ class StreamReaderWriter: def __exit__(self, type, value, tb): self.stream.close() + def __reduce_ex__(self, proto): + raise TypeError("can't serialize %s" % self.__class__.__name__) + ### class StreamRecoder: @@ -866,6 +875,9 @@ class StreamRecoder: def __exit__(self, type, value, tb): self.stream.close() + def __reduce_ex__(self, proto): + raise TypeError("can't serialize %s" % self.__class__.__name__) + ### Shortcuts def open(filename, mode='r', encoding=None, errors='strict', buffering=-1): |