svn+ssh://pythondev@svn.python.org/python/trunk
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r74189 | amaury.forgeotdarc | 2009-07-23 21:26:02 +0200 (jeu., 23 juil. 2009) | 4 lines
#6553: crash in cPickle.load(), when given a StringIO with incomplete data.
Will backport to 2.6, 3.x already fixed a similar issue with issue4298.
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svn+ssh://pythondev@svn.python.org/python/trunk
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r68903 | mark.dickinson | 2009-01-24 16:40:29 +0000 (Sat, 24 Jan 2009) | 5 lines
Issue #1672332: Fix unpickling of subnormal floats, which was raising
ValueError on some platforms as a result of the platform strtod setting
errno on underflow.
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r68906 | mark.dickinson | 2009-01-24 21:08:38 +0000 (Sat, 24 Jan 2009) | 2 lines
Issue #3657: fix occasional test_pickletools failures.
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behaviours. I left the original test commented out (note
that that test came from #2702, which seems to have a
problem in FreeBSD and Windows, but not in Linux).
I included a new test, to watch over the now-broken
behaviour, I took it from #3179.
Added checks for integer overflows, contributed by Google. Some are
only available if asserts are left in the code, in cases where they
can't be triggered from Python code.
Renamed copy_reg to copyreg in the standard library, to avoid
spurious warnings and ease later merging to py3k branch. Public
documentation remains intact.
This code was broken if save() returned a negative number since i contained
a boolean value and then we compared i < 0 which should never be true.
Will backport (assuming it's necessary)
* unified the way intobject, longobject and mystrtoul handle
values around -sys.maxint-1.
* in general, trying to entierely avoid overflows in any computation
involving signed ints or longs is extremely involved. Fixed a few
simple cases where a compiler might be too clever (but that's all
guesswork).
* more overflow checks against bad data in marshal.c.
* 2.5 specific: fixed a number of places that were still confusing int
and Py_ssize_t. Some of them could potentially have caused
"real-world" breakage.
* list.pop(x): fixing overflow issues on x was messy. I just reverted
to PyArg_ParseTuple("n"), which does the right thing. (An obscure
test was trying to give a Decimal to list.pop()... doesn't make
sense any more IMHO)
* trying to write a few tests...
using a custom, nearly-identical macro. This probably changes how some of
these functions are compiled, which may result in fractionally slower (or
faster) execution. Considering the nature of traversal, visiting much of the
address space in unpredictable patterns, I'd argue the code readability and
maintainability is well worth it ;P
In C++, it's an error to pass a string literal to a char* function
without a const_cast(). Rather than require every C++ extension
module to put a cast around string literals, fix the API to state the
const-ness.
I focused on parts of the API where people usually pass literals:
PyArg_ParseTuple() and friends, Py_BuildValue(), PyMethodDef, the type
slots, etc. Predictably, there were a large set of functions that
needed to be fixed as a result of these changes. The most pervasive
change was to make the keyword args list passed to
PyArg_ParseTupleAndKewords() to be a const char *kwlist[].
One cast was required as a result of the changes: A type object
mallocs the memory for its tp_doc slot and later frees it.
PyTypeObject says that tp_doc is const char *; but if the type was
created by type_new(), we know it is safe to cast to char *.
SF bug [ 751276 ] cPickle doesn't raise error, pickle does (recursiondepth)
Most of the calls to PyErr_Clear() were intended to catch & clear an
attribute error and try something different. Guard all those cases
with a PyErr_ExceptionMatches() and fail if some other error
occurred. The other error is likely a bug in the user code.
This is basically the C equivalent of changing "except:" to
"except AttributeError:"
tp_free is NULL or PyObject_Del at the end. Because it's a base type
it must call tp_free in its dealloc function, and because it's gc'able
it must not call PyObject_Del.
inherit_slots(): Don't inherit tp_free unless the type and its base
agree about whether they're gc'able. If the type is gc'able and the
base is not, and the base uses the default PyObject_Del for its
tp_free, give the type PyObject_GC_Del for its tp_free (the appropriate
default for a gc'able type).
cPickle.c: The Pickler and Unpickler types claim to be base classes
and gc'able, but their dealloc functions didn't call tp_free.
Repaired that. Also call PyType_Ready() on these typeobjects, so
that the correct (PyObject_GC_Del) default memory-freeing function
gets plugged into these types' tp_free slots.
Amaury Forgeot d'Arc
Collin Winter
Mark Dickinson
Georg Brandl
Alexandre Vassalotti
Facundo Batista
Thomas Heller
Gregory P. Smith
Christian Heimes
Neal Norwitz
Martin v. Löwis
Kristján Valur Jónsson
Armin Rigo
Richard Jones
Thomas Wouters
Jeremy Hylton
Raymond Hettinger
Christian Tismer
Tim Peters