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[3.10] bpo-34990: Treat the pyc header's mtime in compileall as an unsigned int (GH-19708)

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(cherry picked from commit bb21e28fd0)

Co-authored-by: Ammar Askar <ammar@ammaraskar.com>
Co-authored-by: Stéphane Wirtel <stephane@wirtel.be>
This commit is contained in:
Miss Islington (bot) 2021-08-24 08:09:14 -07:00 • committed by GitHub
parent 4673dc26f8
commit 0af681b652
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4 changed files with 35 additions and 11 deletions
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17
Lib/test/test_zipimport.py
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@ -37,14 +37,9 @@ raise_src = 'def do_raise(): raise TypeError\n'
def make_pyc(co, mtime, size):
data = marshal.dumps(co)
if type(mtime) is type(0.0):
# Mac mtimes need a bit of special casing
if mtime < 0x7fffffff:
mtime = int(mtime)
else:
mtime = int(-0x100000000 + int(mtime))
pyc = (importlib.util.MAGIC_NUMBER +
struct.pack("<iii", 0, int(mtime), size & 0xFFFFFFFF) + data)
struct.pack("<iLL", 0,
int(mtime) & 0xFFFF_FFFF, size & 0xFFFF_FFFF) + data)
return pyc
def module_path_to_dotted_name(path):
@ -256,6 +251,14 @@ class UncompressedZipImportTestCase(ImportHooksBaseTestCase):
TESTMOD + pyc_ext: (NOW, badtime_pyc)}
self.doTest(".py", files, TESTMOD)
def test2038MTime(self):
# Make sure we can handle mtimes larger than what a 32-bit signed number
# can hold.
twenty_thirty_eight_pyc = make_pyc(test_co, 2**32 - 1, len(test_src))
files = {TESTMOD + ".py": (NOW, test_src),
TESTMOD + pyc_ext: (NOW, twenty_thirty_eight_pyc)}
self.doTest(".py", files, TESTMOD)
def testPackage(self):
packdir = TESTPACK + os.sep
files = {packdir + "__init__" + pyc_ext: (NOW, test_pyc),