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Fix writing out 64-bit size fields on 32-bit builds

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This commit is contained in:
Antoine Pitrou 2013-11-23 21:05:08 +01:00
parent b3d3ee4fef
commit 8f2ee6e407
2 changed files with 25 additions and 14 deletions
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7
Lib/test/test_range.py
View file

@ -353,9 +353,10 @@ def test_pickling(self):
(13, 21, 3), (-2, 2, 2), (2**65, 2**65+2)]
for proto in range(pickle.HIGHEST_PROTOCOL + 1):
for t in testcases:
r = range(*t)
self.assertEqual(list(pickle.loads(pickle.dumps(r, proto))),
list(r))
with self.subTest(proto=proto, test=t):
r = range(*t)
self.assertEqual(list(pickle.loads(pickle.dumps(r, proto))),
list(r))
def test_iterator_pickling(self):
testcases = [(13,), (0, 11), (-22, 10), (20, 3, -1),

32
Modules/_pickle.c
View file

@ -699,18 +699,28 @@ _Pickler_ClearBuffer(PicklerObject *self)
return 0;
}
static void
_write_size64(char *out, size_t value)
{
out[0] = (unsigned char)(value & 0xff);
out[1] = (unsigned char)((value >> 8) & 0xff);
out[2] = (unsigned char)((value >> 16) & 0xff);
out[3] = (unsigned char)((value >> 24) & 0xff);
#if SIZEOF_SIZE_T >= 8
out[4] = (unsigned char)((value >> 32) & 0xff);
out[5] = (unsigned char)((value >> 40) & 0xff);
out[6] = (unsigned char)((value >> 48) & 0xff);
out[7] = (unsigned char)((value >> 56) & 0xff);
#else
out[4] = out[5] = out[6] = out[7] = 0;
#endif
}
static void
_Pickler_WriteFrameHeader(PicklerObject *self, char *qdata, size_t frame_len)
{
qdata[0] = (unsigned char)FRAME;
qdata[1] = (unsigned char)(frame_len & 0xff);
qdata[2] = (unsigned char)((frame_len >> 8) & 0xff);
qdata[3] = (unsigned char)((frame_len >> 16) & 0xff);
qdata[4] = (unsigned char)((frame_len >> 24) & 0xff);
qdata[5] = (unsigned char)((frame_len >> 32) & 0xff);
qdata[6] = (unsigned char)((frame_len >> 40) & 0xff);
qdata[7] = (unsigned char)((frame_len >> 48) & 0xff);
qdata[8] = (unsigned char)((frame_len >> 56) & 0xff);
qdata[0] = FRAME;
_write_size64(qdata + 1, frame_len);
}
static int
@ -2017,7 +2027,7 @@ save_bytes(PicklerObject *self, PyObject *obj)
int i;
header[0] = BINBYTES8;
for (i = 0; i < 8; i++) {
header[i+1] = (unsigned char)((size >> (8 * i)) & 0xff);
_write_size64(header + 1, size);
}
len = 8;
}
@ -2131,7 +2141,7 @@ write_utf8(PicklerObject *self, char *data, Py_ssize_t size)
header[0] = BINUNICODE8;
for (i = 0; i < 8; i++) {
header[i+1] = (unsigned char)((size >> (8 * i)) & 0xff);
_write_size64(header + 1, size);
}
len = 9;
}