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bpo-47084: Clear Unicode cached representations on finalization (GH-32032)

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Jeremy Kloth 2022-03-22 06:53:51 -06:00 • committed by GitHub
parent 7d810b6a4e
commit 88872a29f1
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5 changed files with 78 additions and 18 deletions
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41
Lib/test/test_embed.py
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@ -1645,24 +1645,29 @@ class MiscTests(EmbeddingTestsMixin, unittest.TestCase):
'-X showrefcount requires a Python debug build')
def test_no_memleak(self):
# bpo-1635741: Python must release all memory at exit
cmd = [sys.executable, "-I", "-X", "showrefcount", "-c", "pass"]
proc = subprocess.run(cmd,
stdout=subprocess.PIPE,
stderr=subprocess.STDOUT,
text=True)
self.assertEqual(proc.returncode, 0)
out = proc.stdout.rstrip()
match = re.match(r'^\[(-?\d+) refs, (-?\d+) blocks\]', out)
if not match:
self.fail(f"unexpected output: {out!a}")
refs = int(match.group(1))
blocks = int(match.group(2))
self.assertEqual(refs, 0, out)
if not MS_WINDOWS:
self.assertEqual(blocks, 0, out)
else:
# bpo-46857: on Windows, Python still leaks 1 memory block at exit
self.assertIn(blocks, (0, 1), out)
tests = (
('off', 'pass'),
('on', 'pass'),
('off', 'import __hello__'),
('on', 'import __hello__'),
)
for flag, stmt in tests:
xopt = f"frozen_modules={flag}"
cmd = [sys.executable, "-I", "-X", "showrefcount", "-X", xopt, "-c", stmt]
proc = subprocess.run(cmd,
stdout=subprocess.PIPE,
stderr=subprocess.STDOUT,
text=True)
self.assertEqual(proc.returncode, 0)
out = proc.stdout.rstrip()
match = re.match(r'^\[(-?\d+) refs, (-?\d+) blocks\]', out)
if not match:
self.fail(f"unexpected output: {out!a}")
refs = int(match.group(1))
blocks = int(match.group(2))
with self.subTest(frozen_modules=flag, stmt=stmt):
self.assertEqual(refs, 0, out)
self.assertEqual(blocks, 0, out)
class StdPrinterTests(EmbeddingTestsMixin, unittest.TestCase):