[3.13] gh-130163: Fix crashes related to PySys_GetObject() (GH-130503) (GH-130556)

The use of PySys_GetObject() and _PySys_GetAttr(), which return a borrowed
reference, has been replaced by using one of the following functions, which
return a strong reference and distinguish a missing attribute from an error:
_PySys_GetOptionalAttr(), _PySys_GetOptionalAttrString(),
_PySys_GetRequiredAttr(), and _PySys_GetRequiredAttrString().
(cherry picked from commit 0ef4ffeefd)
This commit is contained in:
Serhiy Storchaka 2025-02-26 00:50:26 +02:00 committed by GitHub
parent b0d3f49195
commit 7c1b76fce8
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23 changed files with 505 additions and 180 deletions

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@ -129,6 +129,17 @@ class TestPrint(unittest.TestCase):
raise RuntimeError
self.assertRaises(RuntimeError, print, 1, file=noflush(), flush=True)
def test_gh130163(self):
class X:
def __str__(self):
sys.stdout = StringIO()
support.gc_collect()
return 'foo'
with support.swap_attr(sys, 'stdout', None):
sys.stdout = StringIO() # the only reference
print(X()) # should not crash
class TestPy2MigrationHint(unittest.TestCase):
"""Test that correct hint is produced analogous to Python3 syntax,