find_class(): We no longer mask all exceptions[1] by transforming them
into SystemError. The latter is definitely not the right thing to do,
so we let any exceptions that occur in the PyObject_GetAttr() call to
simply propagate up if they occur.
[1] Note that pickle only masked ImportError, KeyError, and
AttributeError, but cPickle masked all exceptions.
load_inst(): Implement the security hook that cPickle already had.
When unpickling callables which are not classes, we look to see if the
object has an attribute __safe_for_unpickling__. If this exists and
has a true value, then we can call it to create the unpickled object.
Otherwise we raise an UnpicklingError.
find_class(): We no longer mask ImportError, KeyError, and
AttributeError by transforming them into SystemError. The latter is
definitely not the right thing to do, so we let the former three
exceptions simply propagate up if they occur, i.e. we remove the
try/except!
documentation. This addresses previously undocumented parts of the
public interfaces, the differences between pickle and cPickle,
security concerns, and on and on.
Fred please proofread!
special-cases classic classes, it doesn't do anything about other
cases where different metaclasses are involved (except for the trivial
case where one metaclass is a subclass of the others). Also note that
it's metaclass, not metatype.
of multiple inheritance from a mix of new- and classic-style classes.
This is his patch, plus a start at some test cases from me. Will check
in more, plus a NEWS blurb, later tonight.
used the default Darwin/* for the old code. Reversed those tests so
that compatibility code is in a switch leg with a specific version and
newer systems take the default leg.
This should allow Python to build on OSX 10.1.1 (which jumps from Darwin/1.4
to Darwin/5.1 due to a new numbering scheme).
This gives mmap() on Windows the ability to create read-only, write-
through and copy-on-write mmaps. A new keyword argument is introduced
because the mmap() signatures diverged between Windows and Unix, so
while they (now) both support this functionality, there wasn't a way to
spell it in a common way without introducing a new spelling gimmick.
The old spellings are still accepted, so there isn't a backward-
compatibility issue here.
uninitialized memory reads reported in bug #478001.
Note that this doesn't address the following larger issues:
- Error conditions are not documented for PyOS_*sig() in the C API.
- Nothing that actually calls PyOS_*sig() in the core interpreter and
extension modules actually /checks/ the return value of the call.
Fixing those is left as an exercise for a later day.
linked against. Most, but not all, of it is included in
PythonCore, but extensions may want to use some of
the routines not included. Fixes a bug reported by
Tom Loredo.
- Don't scan for cmd-. unless in the foreground
- Scan before switching out to other processes, not after
- don't scan if SchedParams.check_interrupt is false (!)
- But: do scan if we're blocked on I/O
One problem remains: in the last case KeyboardInterrupt is raised
too late.
Barry Warsaw
Fred Drake
Guido van Rossum
Tim Peters
Jeremy Hylton
Jack Jansen
Thomas Heller
Martin v. Löwis