Issue #11564: Avoid crashes when trying to pickle huge objects or containers
(more than 2**31 items). Instead, in most cases, an OverflowError is raised.
This commit is contained in:
Antoine Pitrou
parent
aa26b27503
commit
82be19f889
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@ -2,10 +2,14 @@ import io
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import unittest
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import pickle
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import pickletools
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import sys
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import copyreg
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from http.cookies import SimpleCookie
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from test.support import TestFailed, TESTFN, run_with_locale
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from test.support import (
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TestFailed, TESTFN, run_with_locale,
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_2G, _4G, precisionbigmemtest,
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)
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from pickle import bytes_types
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@ -14,6 +18,8 @@ from pickle import bytes_types
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# kind of outer loop.
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protocols = range(pickle.HIGHEST_PROTOCOL + 1)
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character_size = 4 if sys.maxunicode > 0xFFFF else 2
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# Return True if opcode code appears in the pickle, else False.
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def opcode_in_pickle(code, pickle):
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@ -1098,6 +1104,100 @@ class AbstractPickleTests(unittest.TestCase):
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empty = self.loads(b'\x80\x03U\x00q\x00.', encoding='koi8-r')
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self.assertEqual(empty, '')
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def check_negative_32b_binXXX(self, dumped):
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if sys.maxsize > 2**32:
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self.skipTest("test is only meaningful on 32-bit builds")
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# XXX Pure Python pickle reads lengths as signed and passes
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# them directly to read() (hence the EOFError)
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with self.assertRaises((pickle.UnpicklingError, EOFError,
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ValueError, OverflowError)):
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self.loads(dumped)
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def test_negative_32b_binbytes(self):
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# On 32-bit builds, a BINBYTES of 2**31 or more is refused
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self.check_negative_32b_binXXX(b'\x80\x03B\xff\xff\xff\xffxyzq\x00.')
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def test_negative_32b_binunicode(self):
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# On 32-bit builds, a BINUNICODE of 2**31 or more is refused
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self.check_negative_32b_binXXX(b'\x80\x03X\xff\xff\xff\xffxyzq\x00.')
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class BigmemPickleTests(unittest.TestCase):
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# Binary protocols can serialize longs of up to 2GB-1
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@precisionbigmemtest(size=_2G, memuse=1 + 1, dry_run=False)
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def test_huge_long_32b(self, size):
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data = 1 << (8 * size)
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try:
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for proto in protocols:
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if proto < 2:
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continue
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with self.assertRaises((ValueError, OverflowError)):
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self.dumps(data, protocol=proto)
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finally:
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data = None
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# Protocol 3 can serialize up to 4GB-1 as a bytes object
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# (older protocols don't have a dedicated opcode for bytes and are
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# too inefficient)
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@precisionbigmemtest(size=_2G, memuse=1 + 1, dry_run=False)
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def test_huge_bytes_32b(self, size):
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data = b"abcd" * (size // 4)
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try:
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for proto in protocols:
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if proto < 3:
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continue
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try:
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pickled = self.dumps(data, protocol=proto)
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self.assertTrue(b"abcd" in pickled[:15])
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self.assertTrue(b"abcd" in pickled[-15:])
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finally:
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pickled = None
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finally:
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data = None
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@precisionbigmemtest(size=_4G, memuse=1 + 1, dry_run=False)
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def test_huge_bytes_64b(self, size):
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data = b"a" * size
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try:
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for proto in protocols:
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if proto < 3:
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continue
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with self.assertRaises((ValueError, OverflowError)):
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self.dumps(data, protocol=proto)
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finally:
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data = None
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# All protocols use 1-byte per printable ASCII character; we add another
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# byte because the encoded form has to be copied into the internal buffer.
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@precisionbigmemtest(size=_2G, memuse=2 + character_size, dry_run=False)
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def test_huge_str_32b(self, size):
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data = "abcd" * (size // 4)
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try:
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for proto in protocols:
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try:
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pickled = self.dumps(data, protocol=proto)
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self.assertTrue(b"abcd" in pickled[:15])
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self.assertTrue(b"abcd" in pickled[-15:])
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finally:
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pickled = None
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finally:
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data = None
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@precisionbigmemtest(size=_4G, memuse=1 + character_size, dry_run=False)
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def test_huge_str_64b(self, size):
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data = "a" * size
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try:
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for proto in protocols:
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with self.assertRaises((ValueError, OverflowError)):
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self.dumps(data, protocol=proto)
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finally:
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data = None
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# Test classes for reduce_ex
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class REX_one(object):
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@ -1089,7 +1089,7 @@ def bigmemtest(minsize, memuse):
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return wrapper
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return decorator
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def precisionbigmemtest(size, memuse):
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def precisionbigmemtest(size, memuse, dry_run=True):
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def decorator(f):
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def wrapper(self):
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size = wrapper.size
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@ -1099,7 +1099,8 @@ def precisionbigmemtest(size, memuse):
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else:
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maxsize = size
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if real_max_memuse and real_max_memuse < maxsize * memuse:
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if ((real_max_memuse or not dry_run)
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and real_max_memuse < maxsize * memuse):
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raise unittest.SkipTest(
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"not enough memory: %.1fG minimum needed"
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% (size * memuse / (1024 ** 3)))
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@ -7,6 +7,7 @@ from test.pickletester import AbstractPickleTests
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from test.pickletester import AbstractPickleModuleTests
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from test.pickletester import AbstractPersistentPicklerTests
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from test.pickletester import AbstractPicklerUnpicklerObjectTests
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from test.pickletester import BigmemPickleTests
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try:
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import _pickle
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@ -37,13 +38,13 @@ class PyPicklerTests(AbstractPickleTests):
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return u.load()
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class InMemoryPickleTests(AbstractPickleTests):
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class InMemoryPickleTests(AbstractPickleTests, BigmemPickleTests):
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pickler = pickle._Pickler
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unpickler = pickle._Unpickler
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def dumps(self, arg, proto=None):
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return pickle.dumps(arg, proto)
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def dumps(self, arg, protocol=None):
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return pickle.dumps(arg, protocol)
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def loads(self, buf, **kwds):
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return pickle.loads(buf, **kwds)
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@ -22,6 +22,9 @@ Core and Builtins
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Library
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-------
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- Issue #11564: Avoid crashes when trying to pickle huge objects or containers
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(more than 2**31 items). Instead, in most cases, an OverflowError is raised.
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- Issue #12287: Fix a stack corruption in ossaudiodev module when the FD is
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greater than FD_SETSIZE.
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@ -153,7 +153,7 @@ typedef struct {
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static void
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Pdata_dealloc(Pdata *self)
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{
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int i = Py_SIZE(self);
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Py_ssize_t i = Py_SIZE(self);
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while (--i >= 0) {
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Py_DECREF(self->data[i]);
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}
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@ -190,9 +190,9 @@ Pdata_New(void)
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* number of items, this is a (non-erroneous) NOP.
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*/
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static int
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Pdata_clear(Pdata *self, int clearto)
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Pdata_clear(Pdata *self, Py_ssize_t clearto)
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{
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int i = Py_SIZE(self);
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Py_ssize_t i = Py_SIZE(self);
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if (clearto < 0)
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return stack_underflow();
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@ -303,7 +303,7 @@ Pdata_poplist(Pdata *self, Py_ssize_t start)
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typedef struct {
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PyObject *me_key;
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long me_value;
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Py_ssize_t me_value;
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} PyMemoEntry;
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typedef struct {
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@ -328,7 +328,7 @@ typedef struct PicklerObject {
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Py_ssize_t max_output_len; /* Allocation size of output_buffer. */
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int proto; /* Pickle protocol number, >= 0 */
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int bin; /* Boolean, true if proto > 0 */
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int buf_size; /* Size of the current buffered pickle data */
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Py_ssize_t buf_size; /* Size of the current buffered pickle data */
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int fast; /* Enable fast mode if set to a true value.
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The fast mode disable the usage of memo,
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therefore speeding the pickling process by
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@ -369,7 +369,7 @@ typedef struct UnpicklerObject {
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char *errors; /* Name of errors handling scheme to used when
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decoding strings. The default value is
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"strict". */
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int *marks; /* Mark stack, used for unpickling container
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Py_ssize_t *marks; /* Mark stack, used for unpickling container
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objects. */
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Py_ssize_t num_marks; /* Number of marks in the mark stack. */
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Py_ssize_t marks_size; /* Current allocated size of the mark stack. */
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@ -556,7 +556,7 @@ _PyMemoTable_ResizeTable(PyMemoTable *self, Py_ssize_t min_size)
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}
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/* Returns NULL on failure, a pointer to the value otherwise. */
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static long *
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static Py_ssize_t *
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PyMemoTable_Get(PyMemoTable *self, PyObject *key)
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{
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PyMemoEntry *entry = _PyMemoTable_Lookup(self, key);
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@ -567,7 +567,7 @@ PyMemoTable_Get(PyMemoTable *self, PyObject *key)
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/* Returns -1 on failure, 0 on success. */
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static int
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PyMemoTable_Set(PyMemoTable *self, PyObject *key, long value)
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PyMemoTable_Set(PyMemoTable *self, PyObject *key, Py_ssize_t value)
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{
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PyMemoEntry *entry;
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@ -700,7 +700,7 @@ _Pickler_FlushToFile(PicklerObject *self)
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return (result == NULL) ? -1 : 0;
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}
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static int
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static Py_ssize_t
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_Pickler_Write(PicklerObject *self, const char *s, Py_ssize_t n)
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{
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Py_ssize_t i, required;
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@ -735,7 +735,7 @@ _Pickler_Write(PicklerObject *self, const char *s, Py_ssize_t n)
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PyErr_NoMemory();
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return -1;
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}
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self->max_output_len = (self->output_len + n) * 2;
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self->max_output_len = (self->output_len + n) / 2 * 3;
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if (_PyBytes_Resize(&self->output_buffer, self->max_output_len) < 0)
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return -1;
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}
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@ -1219,9 +1219,9 @@ _Unpickler_SetInputEncoding(UnpicklerObject *self,
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static int
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memo_get(PicklerObject *self, PyObject *key)
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{
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long *value;
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Py_ssize_t *value;
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char pdata[30];
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int len;
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Py_ssize_t len;
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value = PyMemoTable_Get(self->memo, key);
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if (value == NULL) {
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@ -1231,8 +1231,9 @@ memo_get(PicklerObject *self, PyObject *key)
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if (!self->bin) {
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pdata[0] = GET;
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PyOS_snprintf(pdata + 1, sizeof(pdata) - 1, "%ld\n", *value);
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len = (int)strlen(pdata);
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PyOS_snprintf(pdata + 1, sizeof(pdata) - 1,
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"%" PY_FORMAT_SIZE_T "d\n", *value);
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len = strlen(pdata);
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}
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else {
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if (*value < 256) {
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@ -1266,9 +1267,9 @@ memo_get(PicklerObject *self, PyObject *key)
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static int
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memo_put(PicklerObject *self, PyObject *obj)
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{
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long x;
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Py_ssize_t x;
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char pdata[30];
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int len;
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Py_ssize_t len;
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int status = 0;
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if (self->fast)
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@ -1280,7 +1281,8 @@ memo_put(PicklerObject *self, PyObject *obj)
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if (!self->bin) {
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pdata[0] = PUT;
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PyOS_snprintf(pdata + 1, sizeof(pdata) - 1, "%ld\n", x);
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PyOS_snprintf(pdata + 1, sizeof(pdata) - 1,
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"%" PY_FORMAT_SIZE_T "d\n", x);
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len = strlen(pdata);
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}
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else {
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@ -1482,7 +1484,7 @@ static int
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save_int(PicklerObject *self, long x)
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{
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char pdata[32];
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int len = 0;
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Py_ssize_t len = 0;
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if (!self->bin
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#if SIZEOF_LONG > 4
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@ -1609,7 +1611,7 @@ save_long(PicklerObject *self, PyObject *obj)
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}
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else {
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header[0] = LONG4;
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size = (int)nbytes;
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size = (Py_ssize_t) nbytes;
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for (i = 1; i < 5; i++) {
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header[i] = (unsigned char)(size & 0xff);
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size >>= 8;
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@ -1723,7 +1725,7 @@ save_bytes(PicklerObject *self, PyObject *obj)
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else {
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Py_ssize_t size;
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char header[5];
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int len;
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Py_ssize_t len;
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size = PyBytes_Size(obj);
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if (size < 0)
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@ -1743,6 +1745,8 @@ save_bytes(PicklerObject *self, PyObject *obj)
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len = 5;
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}
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else {
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PyErr_SetString(PyExc_OverflowError,
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"cannot serialize a bytes object larger than 4GB");
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return -1; /* string too large */
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}
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@ -1867,8 +1871,11 @@ save_unicode(PicklerObject *self, PyObject *obj)
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goto error;
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size = PyBytes_GET_SIZE(encoded);
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if (size < 0 || size > 0xffffffffL)
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if (size > 0xffffffffL) {
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PyErr_SetString(PyExc_OverflowError,
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"cannot serialize a string larger than 4GB");
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goto error; /* string too large */
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}
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pdata[0] = BINUNICODE;
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pdata[1] = (unsigned char)(size & 0xff);
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@ -1913,9 +1920,9 @@ save_unicode(PicklerObject *self, PyObject *obj)
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/* A helper for save_tuple. Push the len elements in tuple t on the stack. */
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static int
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store_tuple_elements(PicklerObject *self, PyObject *t, int len)
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store_tuple_elements(PicklerObject *self, PyObject *t, Py_ssize_t len)
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{
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int i;
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Py_ssize_t i;
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assert(PyTuple_Size(t) == len);
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@ -1940,7 +1947,7 @@ store_tuple_elements(PicklerObject *self, PyObject *t, int len)
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static int
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save_tuple(PicklerObject *self, PyObject *obj)
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{
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int len, i;
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Py_ssize_t len, i;
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const char mark_op = MARK;
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const char tuple_op = TUPLE;
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@ -2163,7 +2170,7 @@ static int
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batch_list_exact(PicklerObject *self, PyObject *obj)
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{
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PyObject *item = NULL;
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int this_batch, total;
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Py_ssize_t this_batch, total;
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const char append_op = APPEND;
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const char appends_op = APPENDS;
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@ -2208,7 +2215,7 @@ static int
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save_list(PicklerObject *self, PyObject *obj)
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{
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char header[3];
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int len;
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Py_ssize_t len;
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int status = 0;
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if (self->fast && !fast_save_enter(self, obj))
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@ -2468,7 +2475,7 @@ save_dict(PicklerObject *self, PyObject *obj)
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{
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PyObject *items, *iter;
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char header[3];
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int len;
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Py_ssize_t len;
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int status = 0;
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if (self->fast && !fast_save_enter(self, obj))
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@ -2603,7 +2610,7 @@ save_global(PicklerObject *self, PyObject *obj, PyObject *name)
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PyObject *code_obj; /* extension code as Python object */
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long code; /* extension code as C value */
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char pdata[5];
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int n;
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Py_ssize_t n;
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PyTuple_SET_ITEM(two_tuple, 0, module_name);
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PyTuple_SET_ITEM(two_tuple, 1, global_name);
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@ -2626,6 +2633,7 @@ save_global(PicklerObject *self, PyObject *obj, PyObject *name)
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}
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code = PyLong_AS_LONG(code_obj);
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if (code <= 0 || code > 0x7fffffffL) {
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if (!PyErr_Occurred())
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PyErr_Format(PicklingError,
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"Can't pickle %R: extension code %ld is out of range",
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obj, code);
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@ -3477,7 +3485,7 @@ pmp_copy(PicklerMemoProxyObject *self)
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PyObject *key, *value;
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key = PyLong_FromVoidPtr(entry.me_key);
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value = Py_BuildValue("lO", entry.me_value, entry.me_key);
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value = Py_BuildValue("nO", entry.me_value, entry.me_key);
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if (key == NULL || value == NULL) {
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Py_XDECREF(key);
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|
|
@ -3638,7 +3646,7 @@ Pickler_set_memo(PicklerObject *self, PyObject *obj)
|
|||
return -1;
|
||||
|
||||
while (PyDict_Next(obj, &i, &key, &value)) {
|
||||
long memo_id;
|
||||
Py_ssize_t memo_id;
|
||||
PyObject *memo_obj;
|
||||
|
||||
if (!PyTuple_Check(value) || Py_SIZE(value) != 2) {
|
||||
|
|
@ -3646,7 +3654,7 @@ Pickler_set_memo(PicklerObject *self, PyObject *obj)
|
|||
"'memo' values must be 2-item tuples");
|
||||
goto error;
|
||||
}
|
||||
memo_id = PyLong_AsLong(PyTuple_GET_ITEM(value, 0));
|
||||
memo_id = PyLong_AsSsize_t(PyTuple_GET_ITEM(value, 0));
|
||||
if (memo_id == -1 && PyErr_Occurred())
|
||||
goto error;
|
||||
memo_obj = PyTuple_GET_ITEM(value, 1);
|
||||
|
|
@ -3777,7 +3785,7 @@ find_class(UnpicklerObject *self, PyObject *module_name, PyObject *global_name)
|
|||
module_name, global_name);
|
||||
}
|
||||
|
||||
static int
|
||||
static Py_ssize_t
|
||||
marker(UnpicklerObject *self)
|
||||
{
|
||||
if (self->num_marks < 1) {
|
||||
|
|
@ -3855,6 +3863,28 @@ load_bool(UnpicklerObject *self, PyObject *boolean)
|
|||
return 0;
|
||||
}
|
||||
|
||||
/* s contains x bytes of an unsigned little-endian integer. Return its value
|
||||
* as a C Py_ssize_t, or -1 if it's higher than PY_SSIZE_T_MAX.
|
||||
*/
|
||||
static Py_ssize_t
|
||||
calc_binsize(char *bytes, int size)
|
||||
{
|
||||
unsigned char *s = (unsigned char *)bytes;
|
||||
size_t x = 0;
|
||||
|
||||
assert(size == 4);
|
||||
|
||||
x = (size_t) s[0];
|
||||
x |= (size_t) s[1] << 8;
|
||||
x |= (size_t) s[2] << 16;
|
||||
x |= (size_t) s[3] << 24;
|
||||
|
||||
if (x > PY_SSIZE_T_MAX)
|
||||
return -1;
|
||||
else
|
||||
return (Py_ssize_t) x;
|
||||
}
|
||||
|
||||
/* s contains x bytes of a little-endian integer. Return its value as a
|
||||
* C int. Obscure: when x is 1 or 2, this is an unsigned little-endian
|
||||
* int, but when x is 4 it's a signed one. This is an historical source
|
||||
|
|
@ -4099,16 +4129,18 @@ static int
|
|||
load_binbytes(UnpicklerObject *self)
|
||||
{
|
||||
PyObject *bytes;
|
||||
long x;
|
||||
Py_ssize_t x;
|
||||
char *s;
|
||||
|
||||
if (_Unpickler_Read(self, &s, 4) < 0)
|
||||
return -1;
|
||||
|
||||
x = calc_binint(s, 4);
|
||||
x = calc_binsize(s, 4);
|
||||
if (x < 0) {
|
||||
PyErr_SetString(UnpicklingError,
|
||||
"BINBYTES pickle has negative byte count");
|
||||
PyErr_Format(PyExc_OverflowError,
|
||||
"BINBYTES exceeds system's maximum size of %zd bytes",
|
||||
PY_SSIZE_T_MAX
|
||||
);
|
||||
return -1;
|
||||
}
|
||||
|
||||
|
|
@ -4126,7 +4158,7 @@ static int
|
|||
load_short_binbytes(UnpicklerObject *self)
|
||||
{
|
||||
PyObject *bytes;
|
||||
unsigned char x;
|
||||
Py_ssize_t x;
|
||||
char *s;
|
||||
|
||||
if (_Unpickler_Read(self, &s, 1) < 0)
|
||||
|
|
@ -4149,7 +4181,7 @@ static int
|
|||
load_binstring(UnpicklerObject *self)
|
||||
{
|
||||
PyObject *str;
|
||||
long x;
|
||||
Py_ssize_t x;
|
||||
char *s;
|
||||
|
||||
if (_Unpickler_Read(self, &s, 4) < 0)
|
||||
|
|
@ -4178,7 +4210,7 @@ static int
|
|||
load_short_binstring(UnpicklerObject *self)
|
||||
{
|
||||
PyObject *str;
|
||||
unsigned char x;
|
||||
Py_ssize_t x;
|
||||
char *s;
|
||||
|
||||
if (_Unpickler_Read(self, &s, 1) < 0)
|
||||
|
|
@ -4222,19 +4254,22 @@ static int
|
|||
load_binunicode(UnpicklerObject *self)
|
||||
{
|
||||
PyObject *str;
|
||||
long size;
|
||||
Py_ssize_t size;
|
||||
char *s;
|
||||
|
||||
if (_Unpickler_Read(self, &s, 4) < 0)
|
||||
return -1;
|
||||
|
||||
size = calc_binint(s, 4);
|
||||
size = calc_binsize(s, 4);
|
||||
if (size < 0) {
|
||||
PyErr_SetString(UnpicklingError,
|
||||
"BINUNICODE pickle has negative byte count");
|
||||
PyErr_Format(PyExc_OverflowError,
|
||||
"BINUNICODE exceeds system's maximum size of %zd bytes",
|
||||
PY_SSIZE_T_MAX
|
||||
);
|
||||
return -1;
|
||||
}
|
||||
|
||||
|
||||
if (_Unpickler_Read(self, &s, size) < 0)
|
||||
return -1;
|
||||
|
||||
|
|
@ -4250,7 +4285,7 @@ static int
|
|||
load_tuple(UnpicklerObject *self)
|
||||
{
|
||||
PyObject *tuple;
|
||||
int i;
|
||||
Py_ssize_t i;
|
||||
|
||||
if ((i = marker(self)) < 0)
|
||||
return -1;
|
||||
|
|
@ -4309,7 +4344,7 @@ static int
|
|||
load_list(UnpicklerObject *self)
|
||||
{
|
||||
PyObject *list;
|
||||
int i;
|
||||
Py_ssize_t i;
|
||||
|
||||
if ((i = marker(self)) < 0)
|
||||
return -1;
|
||||
|
|
@ -4325,7 +4360,7 @@ static int
|
|||
load_dict(UnpicklerObject *self)
|
||||
{
|
||||
PyObject *dict, *key, *value;
|
||||
int i, j, k;
|
||||
Py_ssize_t i, j, k;
|
||||
|
||||
if ((i = marker(self)) < 0)
|
||||
return -1;
|
||||
|
|
@ -4369,7 +4404,7 @@ static int
|
|||
load_obj(UnpicklerObject *self)
|
||||
{
|
||||
PyObject *cls, *args, *obj = NULL;
|
||||
int i;
|
||||
Py_ssize_t i;
|
||||
|
||||
if ((i = marker(self)) < 0)
|
||||
return -1;
|
||||
|
|
@ -4400,7 +4435,7 @@ load_inst(UnpicklerObject *self)
|
|||
PyObject *module_name;
|
||||
PyObject *class_name;
|
||||
Py_ssize_t len;
|
||||
int i;
|
||||
Py_ssize_t i;
|
||||
char *s;
|
||||
|
||||
if ((i = marker(self)) < 0)
|
||||
|
|
@ -4594,7 +4629,7 @@ load_binpersid(UnpicklerObject *self)
|
|||
static int
|
||||
load_pop(UnpicklerObject *self)
|
||||
{
|
||||
int len = Py_SIZE(self->stack);
|
||||
Py_ssize_t len = Py_SIZE(self->stack);
|
||||
|
||||
/* Note that we split the (pickle.py) stack into two stacks,
|
||||
* an object stack and a mark stack. We have to be clever and
|
||||
|
|
@ -4618,7 +4653,7 @@ load_pop(UnpicklerObject *self)
|
|||
static int
|
||||
load_pop_mark(UnpicklerObject *self)
|
||||
{
|
||||
int i;
|
||||
Py_ssize_t i;
|
||||
|
||||
if ((i = marker(self)) < 0)
|
||||
return -1;
|
||||
|
|
@ -4632,7 +4667,7 @@ static int
|
|||
load_dup(UnpicklerObject *self)
|
||||
{
|
||||
PyObject *last;
|
||||
int len;
|
||||
Py_ssize_t len;
|
||||
|
||||
if ((len = Py_SIZE(self->stack)) <= 0)
|
||||
return stack_underflow();
|
||||
|
|
@ -4711,10 +4746,7 @@ load_long_binget(UnpicklerObject *self)
|
|||
if (_Unpickler_Read(self, &s, 4) < 0)
|
||||
return -1;
|
||||
|
||||
idx = (long)Py_CHARMASK(s[0]);
|
||||
idx |= (long)Py_CHARMASK(s[1]) << 8;
|
||||
idx |= (long)Py_CHARMASK(s[2]) << 16;
|
||||
idx |= (long)Py_CHARMASK(s[3]) << 24;
|
||||
idx = calc_binsize(s, 4);
|
||||
|
||||
value = _Unpickler_MemoGet(self, idx);
|
||||
if (value == NULL) {
|
||||
|
|
@ -4860,20 +4892,17 @@ load_long_binput(UnpicklerObject *self)
|
|||
return stack_underflow();
|
||||
value = self->stack->data[Py_SIZE(self->stack) - 1];
|
||||
|
||||
idx = (long)Py_CHARMASK(s[0]);
|
||||
idx |= (long)Py_CHARMASK(s[1]) << 8;
|
||||
idx |= (long)Py_CHARMASK(s[2]) << 16;
|
||||
idx |= (long)Py_CHARMASK(s[3]) << 24;
|
||||
idx = calc_binsize(s, 4);
|
||||
|
||||
return _Unpickler_MemoPut(self, idx, value);
|
||||
}
|
||||
|
||||
static int
|
||||
do_append(UnpicklerObject *self, int x)
|
||||
do_append(UnpicklerObject *self, Py_ssize_t x)
|
||||
{
|
||||
PyObject *value;
|
||||
PyObject *list;
|
||||
int len, i;
|
||||
Py_ssize_t len, i;
|
||||
|
||||
len = Py_SIZE(self->stack);
|
||||
if (x > len || x <= 0)
|
||||
|
|
@ -4886,14 +4915,15 @@ do_append(UnpicklerObject *self, int x)
|
|||
if (PyList_Check(list)) {
|
||||
PyObject *slice;
|
||||
Py_ssize_t list_len;
|
||||
int ret;
|
||||
|
||||
slice = Pdata_poplist(self->stack, x);
|
||||
if (!slice)
|
||||
return -1;
|
||||
list_len = PyList_GET_SIZE(list);
|
||||
i = PyList_SetSlice(list, list_len, list_len, slice);
|
||||
ret = PyList_SetSlice(list, list_len, list_len, slice);
|
||||
Py_DECREF(slice);
|
||||
return i;
|
||||
return ret;
|
||||
}
|
||||
else {
|
||||
PyObject *append_func;
|
||||
|
|
@ -4932,11 +4962,11 @@ load_appends(UnpicklerObject *self)
|
|||
}
|
||||
|
||||
static int
|
||||
do_setitems(UnpicklerObject *self, int x)
|
||||
do_setitems(UnpicklerObject *self, Py_ssize_t x)
|
||||
{
|
||||
PyObject *value, *key;
|
||||
PyObject *dict;
|
||||
int len, i;
|
||||
Py_ssize_t len, i;
|
||||
int status = 0;
|
||||
|
||||
len = Py_SIZE(self->stack);
|
||||
|
|
@ -5104,20 +5134,21 @@ load_mark(UnpicklerObject *self)
|
|||
|
||||
if ((self->num_marks + 1) >= self->marks_size) {
|
||||
size_t alloc;
|
||||
int *marks;
|
||||
Py_ssize_t *marks;
|
||||
|
||||
/* Use the size_t type to check for overflow. */
|
||||
alloc = ((size_t)self->num_marks << 1) + 20;
|
||||
if (alloc > PY_SSIZE_T_MAX ||
|
||||
if (alloc > (PY_SSIZE_T_MAX / sizeof(Py_ssize_t)) ||
|
||||
alloc <= ((size_t)self->num_marks + 1)) {
|
||||
PyErr_NoMemory();
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (self->marks == NULL)
|
||||
marks = (int *)PyMem_Malloc(alloc * sizeof(int));
|
||||
marks = (Py_ssize_t *) PyMem_Malloc(alloc * sizeof(Py_ssize_t));
|
||||
else
|
||||
marks = (int *)PyMem_Realloc(self->marks, alloc * sizeof(int));
|
||||
marks = (Py_ssize_t *) PyMem_Realloc(self->marks,
|
||||
alloc * sizeof(Py_ssize_t));
|
||||
if (marks == NULL) {
|
||||
PyErr_NoMemory();
|
||||
return -1;
|
||||
|
|
|
|||
Loading…
Reference in New Issue