parameter but was not verifying that it was greater than zero. Values
less than zero will now raise a SystemError and return NULL to indicate a
bug in the calling C code. CVE-2008-1887.
backport r62261, r62271
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.
- Issue #1336: fix a race condition in subprocess.Popen if the garbage
collector kicked in at the wrong time that would cause the process
to hang when the child wrote to stderr.
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.
