diff options
| -rw-r--r-- | Lib/test/pickletester.py | 25 | ||||
| -rw-r--r-- | Modules/cPickle.c | 58 |
2 files changed, 79 insertions, 4 deletions
diff --git a/Lib/test/pickletester.py b/Lib/test/pickletester.py index 2a1ca17..5ef0cf2 100644 --- a/Lib/test/pickletester.py +++ b/Lib/test/pickletester.py @@ -1,4 +1,6 @@ import unittest +import pickle + from test.test_support import TestFailed, have_unicode, TESTFN # Tests that try a number of pickle protocols should have a @@ -296,6 +298,25 @@ class AbstractPickleTests(unittest.TestCase): # Tests for protocol 2 + def test_proto(self): + build_none = pickle.NONE + pickle.STOP + for proto in protocols: + expected = build_none + if proto >= 2: + expected = pickle.PROTO + chr(proto) + expected + p = self.dumps(None, proto) + self.assertEqual(p, expected) + + oob = protocols[-1] + 1 # a future protocol + badpickle = pickle.PROTO + chr(oob) + build_none + try: + self.loads(badpickle) + except ValueError, detail: + self.failUnless(str(detail).startswith( + "unsupported pickle protocol")) + else: + self.fail("expected bad protocol number to raise ValueError") + def test_long1(self): x = 12345678910111213141516178920L s = self.dumps(x, 2) @@ -314,14 +335,14 @@ class AbstractPickleTests(unittest.TestCase): c = (1, 2) d = (1, 2, 3) e = (1, 2, 3, 4) - for proto in 0, 1, 2: + for proto in protocols: for x in a, b, c, d, e: s = self.dumps(x, proto) y = self.loads(s) self.assertEqual(x, y, (proto, x, s, y)) def test_singletons(self): - for proto in 0, 1, 2: + for proto in protocols: for x in None, False, True: s = self.dumps(x, proto) y = self.loads(s) diff --git a/Modules/cPickle.c b/Modules/cPickle.c index b59f573..43a8d33 100644 --- a/Modules/cPickle.c +++ b/Modules/cPickle.c @@ -2213,13 +2213,22 @@ dump(Picklerobject *self, PyObject *args) { static char stop = STOP; + if (self->proto >= 2) { + char bytes[2]; + + bytes[0] = PROTO; + bytes[1] = CURRENT_PROTOCOL_NUMBER; + if (self->write_func(self, bytes, 2) < 0) + return -1; + } + if (save(self, args, 0) < 0) return -1; - if ((*self->write_func)(self, &stop, 1) < 0) + if (self->write_func(self, &stop, 1) < 0) return -1; - if ((*self->write_func)(self, NULL, 0) < 0) + if (self->write_func(self, NULL, 0) < 0) return -1; return 0; @@ -3870,6 +3879,31 @@ load_reduce(Unpicklerobject *self) return 0; } +/* Just raises an error if we don't know the protocol specified. PROTO + * is the first opcode for protocols >= 2. + */ +static int +load_proto(Unpicklerobject *self) +{ + int i; + char *protobyte; + + i = self->read_func(self, &protobyte, 1); + if (i < 0) + return -1; + + i = calc_binint(protobyte, 1); + /* No point checking for < 0, since calc_binint returns an unsigned + * int when chewing on 1 byte. + */ + assert(i >= 0); + if (i <= CURRENT_PROTOCOL_NUMBER) + return 0; + + PyErr_Format(PyExc_ValueError, "unsupported pickle protocol: %d", i); + return -1; +} + static PyObject * load(Unpicklerobject *self) { @@ -4099,6 +4133,11 @@ load(Unpicklerobject *self) break; continue; + case PROTO: + if (load_proto(self) < 0) + break; + continue; + case '\0': /* end of file */ PyErr_SetNone(PyExc_EOFError); @@ -4227,6 +4266,16 @@ noload(Unpicklerobject *self) break; continue; + case LONG1: + if (load_counted_long(self, 1) < 0) + break; + continue; + + case LONG4: + if (load_counted_long(self, 4) < 0) + break; + continue; + case FLOAT: if (load_float(self) < 0) break; @@ -4402,6 +4451,11 @@ noload(Unpicklerobject *self) break; continue; + case PROTO: + if (load_proto(self) < 0) + break; + continue; + default: cPickle_ErrFormat(UnpicklingError, "invalid load key, '%s'.", |