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gh-149879: Fix test_tarfile on Cygwin by vstinner · Pull Request #149897 · python/cpython · GitHub

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gh-149879: Fix test_tarfile on Cygwin #149897

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Merged
vstinner merged 3 commits into from
May 15, 2026
Conversation 0 Commits 3 Checks 47 Files changed
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gh-149879: Fix test_tarfile on Cygwin #149897

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8cb7011
gh-149879: Fix test_tarfile on Cygwin
vstinner May 15, 2026
2e68342
Fix also test_realpath_limit_attack()
vstinner May 15, 2026
22b4e78
Revert useless change
vstinner May 15, 2026
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12 changes: 10 additions & 2 deletions Lib/test/test_tarfile.py
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Original file line number Diff line number Diff line change
Expand Up @@ -3205,7 +3205,11 @@ def root_is_uid_gid_0():
import pwd, grp
except ImportError:
return False
if pwd.getpwuid(0)[0] != 'root':
try:
if pwd.getpwuid(0)[0] != 'root':
return False
except KeyError:
# On Cygwin, there is no root user (uid 0)
return False
if grp.getgrgid(0)[0] != 'root':
return False
Expand Down Expand Up @@ -3985,6 +3989,9 @@ def test_realpath_limit_attack(self):
check_flag=False)):
if sys.platform == 'win32':
self.expect_exception((FileNotFoundError, FileExistsError))
elif sys.platform == 'cygwin':
exc = self.expect_exception(OSError)
self.assertEqual(exc.errno, errno.ELOOP)
elif self.raised_exception:
# Cannot symlink/hardlink: tarfile falls back to getmember()
self.expect_exception(KeyError)
Expand All @@ -4006,7 +4013,8 @@ def test_realpath_limit_attack(self):
# 206: ERROR_FILENAME_EXCED_RANGE
self.assertIn(exc.winerror, (3, 5, 206))
else:
self.assertEqual(exc.errno, errno.ENAMETOOLONG)
self.assertIn(exc.errno,
(errno.ENAMETOOLONG, errno.ELOOP))

@symlink_test
def test_parent_symlink2(self):
Expand Down
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