to the signed max value similar to 2.5 and trunk.
Issue #2620: Overflow checking when allocating or reallocating memory
was not always being done properly in some python types and extension
modules. PyMem_MALLOC, PyMem_REALLOC, PyMem_NEW and PyMem_RESIZE have
all been updated to perform better checks and places in the code that
would previously leak memory on the error path when such an allocation
failed have been fixed.
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.
Bug #1728403: Fix a bug that CJKCodecs StreamReader hangs when it
reads a file that ends with incomplete sequence and sizehint argument
for .read() is specified.
#1494314: Fix a regression with high-numbered sockets in 2.4.3. This
means that select() on sockets > FD_SETSIZE (typically 1024) work again.
The patch makes sockets use poll() internally where available.
- reset errno before calling confstr - use confstr() doc to simplify
checks afterwards
- Correct implementation and documentation of os.confstr. Add a simple
test case. I've yet to figure out how to provoke a None return I can test.
- Address issues brought up by MvL on python-checkins.
I tested this with valgrind on amd64.
The man pages I found for diff architectures are inconsistent on this.
I'm not entirely sure this change is correct for all architectures
either.
Perhaps we should just over-allocate and not worry about it?
The change to return None instead of "" in case of unconfigured
values has not been backported.
Fix problems found by Coverity.
_ssl.c: under fail: self is DECREF'd, but it would have been NULL.
_csv.c: I'm not sure if lineterminator could have been anything other than
a string. However, other string method calls are checked, so check this
one too.
the need for the out-of-tree universal binary support that was used to build
the 2.4.3 installer.
Missing here relative to that tree are some changes to IDLE, IMHO those patches
aren't appropriate for the 2.4 branch and users are better of using 2.5's IDLE.
but looks correct on a casual inspection and hasn't been modified
in the trunk. Does anyone want to review further?]
Ensure we don't write beyond errText. I think I got this right, but
it definitely could use some review to ensure I'm not off by one
and there's no possible overflow/wrap-around of bytes_left.
Reported by Klocwork #1.
Fix a problem if there is a failure allocating self->db.
Found with failmalloc.
and _elementtree.c weren't applicable]
Klocwork made another run and found a bunch more problems.
This is the first batch of fixes that should be easy to verify based on context.
This fixes problem numbers: 220 (ast), 323-324 (symtable),
321-322 (structseq), 215 (array), 210 (hotshot), 182 (codecs), 209 (etree).
Cause a PyObject_Malloc() failure to trigger a MemoryError, and then
add 'if (PyErr_Occurred())' checks to various places so that NULL is
returned properly.
If _stat_float_times is false, we will try to INCREF ival which could be NULL.
Return early in that case. The caller checks for PyErr_Occurred so this
should be ok.
Klocwork #297
Try to handle a malloc failure. I'm not entirely sure this is correct.
There might be something else we need to do to handle the exception.
Klocwork # 212-213
[I think this needs more work; a malloc() failure will cause a match to fail,
but nothing raises MemoryError. I'll work on this on the trunk and backport.
--amk]
I'm not sure why this code allocates this string for the error message.
I think it would be better to always use snprintf and have the format
limit the size of the name appropriately (like %.200s).
Klocwork #340
