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Issue #13645: pyc files now contain the size of the corresponding source

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code, to avoid timestamp collisions (especially on filesystems with a low
timestamp resolution) when checking for freshness of the bytecode.
This commit is contained in:
Antoine Pitrou 2012-01-13 18:52:16 +01:00
parent 1f918c1480
commit 5136ac0ca2
14 changed files with 167 additions and 49 deletions
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10
Lib/test/test_zipimport.py
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@ -19,7 +19,7 @@ import io
from traceback import extract_tb, extract_stack, print_tb
raise_src = 'def do_raise(): raise TypeError\n'
def make_pyc(co, mtime):
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
@ -27,14 +27,14 @@ def make_pyc(co, mtime):
mtime = int(mtime)
else:
mtime = int(-0x100000000 + int(mtime))
pyc = imp.get_magic() + struct.pack("<i", int(mtime)) + data
pyc = imp.get_magic() + struct.pack("<ii", int(mtime), size & 0xFFFFFFFF) + data
return pyc
def module_path_to_dotted_name(path):
return path.replace(os.sep, '.')
NOW = time.time()
test_pyc = make_pyc(test_co, NOW)
test_pyc = make_pyc(test_co, NOW, len(test_src))
TESTMOD = "ziptestmodule"
@ -293,7 +293,7 @@ class UncompressedZipImportTestCase(ImportHooksBaseTestCase):
return __file__
if __loader__.get_data("some.data") != b"some data":
raise AssertionError("bad data")\n"""
pyc = make_pyc(compile(src, "<???>", "exec"), NOW)
pyc = make_pyc(compile(src, "<???>", "exec"), NOW, len(src))
files = {TESTMOD + pyc_ext: (NOW, pyc),
"some.data": (NOW, "some data")}
self.doTest(pyc_ext, files, TESTMOD)
@ -313,7 +313,7 @@ class UncompressedZipImportTestCase(ImportHooksBaseTestCase):
self.doTest(".py", files, TESTMOD, call=self.assertModuleSource)
def testGetCompiledSource(self):
pyc = make_pyc(compile(test_src, "<???>", "exec"), NOW)
pyc = make_pyc(compile(test_src, "<???>", "exec"), NOW, len(test_src))
files = {TESTMOD + ".py": (NOW, test_src),
TESTMOD + pyc_ext: (NOW, pyc)}
self.doTest(pyc_ext, files, TESTMOD, call=self.assertModuleSource)