Commit Graph

482 Commits

Author SHA1 Message Date
Amaury Forgeot d'Arc ceda6a67ce #3242: fix a crash in "print", if sys.stdout is set to a custom object,
whose write() method installs another sys.stdout.

Backport of r64633
2008-07-01 20:52:56 +00:00
Guido van Rossum e105f98046 Fix two crashers (borrowed_ref_[34].py from the trunk). 2008-01-23 20:09:39 +00:00
Amaury Forgeot d'Arc c572dc3752 Backport for issue1265 (pdb bug with "with" statement).
When an unfinished generator-iterator is garbage collected, PyEval_EvalFrameEx
is called with a GeneratorExit exception set.  This leads to funny results
if the sys.settrace function itself makes use of generators.
A visible effect is that the settrace function is reset to None.
Another is that the eventual "finally" block of the generator is not called.

It is necessary to save/restore the exception around the call to the trace
function.

This happens a lot with py3k: isinstance() of an ABCMeta instance runs
    def __instancecheck__(cls, instance):
        """Override for isinstance(instance, cls)."""
        return any(cls.__subclasscheck__(c)
                   for c in {instance.__class__, type(instance)})
which lets an opened generator expression each time it returns True.

And the problem can be reproduced in 2.5 with pure python code.
2007-11-13 22:43:05 +00:00
Neal Norwitz 03c566a268 Revert 54813 for 2.5.1 release. Can be applied after 2.5 branch is unfrozen. 2007-04-16 06:19:52 +00:00
Kristján Valur Jónsson 9d9fbb4359 Fix a bug when using the __lltrace__ opcode tracer, and a problem sith signed chars in frameobject.c which can occur with opcodes > 127 2007-04-13 22:09:59 +00:00
Georg Brandl 8a10ea4613 Patch #1682205: a TypeError while unpacking an iterable is no longer
masked by a generic one with the message "unpack non-sequence".
 (backport from rev. 54480)
2007-03-21 09:00:55 +00:00
Georg Brandl 0ea891603d Patch #1674228: when assigning a slice (old-style), check for the
sq_ass_slice instead of the sq_slice slot.
 (backport from rev. 54139)
2007-03-05 22:28:13 +00:00
Neal Norwitz a5f5f14783 Backport 53901 and 53902 to prevent crash when there is an error decoding unicode filenames 2007-02-25 16:19:21 +00:00
Armin Rigo 1bc1ab23d3 Backport of r52862. 2006-11-29 22:07:38 +00:00
Andrew M. Kuchling 5f95870868 [Bug #1542016] Report PCALL_POP value. This makes the return value of sys.callstats() match its docstring.
Backport candidate.  Though it's an API change, this is a pretty obscure
portion of the API.
2006-10-27 13:29:41 +00:00
Neal Norwitz df6a6494cb Move/copy assert for tstate != NULL before first use.
Verify that PyEval_Get{Globals,Locals} returned valid pointers.

Klocwork 231-232
2006-08-13 18:10:10 +00:00
Neal Norwitz 8a87f5d37e Patch #1538606, Patch to fix __index__() clipping.
I modified this patch some by fixing style, some error checking, and adding
XXX comments.  This patch requires review and some changes are to be expected.
I'm checking in now to get the greatest possible review and establish a
baseline for moving forward.  I don't want this to hold up release if possible.
2006-08-12 17:03:09 +00:00
Neal Norwitz 421c1319ad Whoops, how did that get in there. :-) Revert all the parts of 51227 that were not supposed to go it. Only Modules/_ctypes/cfields.c was supposed to be changed 2006-08-12 02:12:30 +00:00
Neal Norwitz 6b4953fd3d Check returned pointer is valid.
Klocwork #233
2006-08-12 02:06:34 +00:00
Armin Rigo 97ff04789d Concatenation on a long string breaks (SF #1526585). 2006-08-09 15:37:26 +00:00
Neal Norwitz 245ce8db46 i and j are initialized below when used. No need to do it twice 2006-06-12 02:16:10 +00:00
Neal Norwitz b9845e72f9 Get rid of f_restricted too. Doc the other 4 ints that were already removed
at the NeedForSpeed sprint.
2006-06-12 02:11:18 +00:00
Martin v. Löwis 0e8bd7e1cc Patch #1495999: Part two of Windows CE changes.
- update header checks, using autoconf
- provide dummies for getenv, environ, and GetVersion
- adjust MSC_VER check in socketmodule.c
2006-06-10 12:23:46 +00:00
Armin Rigo 35f6d36951 [ 1497053 ] Let dicts propagate the exceptions in user __eq__().
[ 1456209 ] dictresize() vulnerability ( <- backport candidate ).
2006-06-01 13:19:12 +00:00
Fredrik Lundh 7a83089c06 needforspeed: backed out the Py_LOCAL-isation of ceval; the massive in-
lining killed performance on certain Intel boxes, and the "aggressive"
macro itself gives most of the benefits on others.
2006-05-27 10:39:48 +00:00
Tim Peters 7df5e7f4b2 Patch 1145039.
set_exc_info(), reset_exc_info():  By exploiting the
likely (who knows?) invariant that when an exception's
`type` is NULL, its `value` and `traceback` are also NULL,
save some cycles in heavily-executed code.

This is a "a kronar saved is a kronar earned" patch:  the
speedup isn't reliably measurable, but it obviously does
reduce the operation count in the normal (no exception
raised) path through PyEval_EvalFrameEx().

The tim-exc_sanity branch tries to push this harder, but
is still blowing up (at least in part due to pre-existing
subtle bugs that appear to have no other visible
consequences!).

Not a bugfix candidate.
2006-05-26 23:14:37 +00:00
Fredrik Lundh 1b94940165 Py_LOCAL shouldn't be used for data; it works for some .NET 2003 compilers,
but Trent's copy thinks that it's an anachronism...
2006-05-26 12:01:49 +00:00
Fredrik Lundh 57640f5c57 needforspeed: added PY_LOCAL_AGGRESSIVE macro to enable "aggressive"
LOCAL inlining; also added some missing whitespace
2006-05-26 11:54:04 +00:00
Fredrik Lundh b8b3c8e276 needforspeed: added Py_LOCAL macro, based on the LOCAL macro used
for SRE and others.  applied Py_LOCAL to relevant portion of ceval,
which gives a 1-2% speedup on my machine.  ymmv.
2006-05-26 11:29:39 +00:00
Georg Brandl 684fd0c8ec Replace PyObject_CallFunction calls with only object args
with PyObject_CallFunctionObjArgs, which is 30% faster.
2006-05-25 19:15:31 +00:00
Richard Jones cebbefc98d Applied patch 1337051 by Neal Norwitz, saving 4 ints on frame objects. 2006-05-23 18:28:17 +00:00
Neal Norwitz 02104df4c8 Fix #132 from Coverity, retval could have been derefed
if a continue inside a try failed.
2006-05-19 06:31:23 +00:00
Neal Norwitz b255069d43 Micro optimization. In the first case, we know that frame->f_exc_type
is NULL, so there's no reason to do anything with it.  In the second case,
we know frame->f_exc_type is not NULL, so we can just do an INCREF.
2006-05-09 05:38:56 +00:00
Martin v. Löwis 6685128b97 Fix more ssize_t issues. 2006-04-22 11:40:03 +00:00
Thomas Wouters 79cdce35de Teach Python/ceval.c's inlining of 'str += str' about Py_ssize_t sizes; this
was having funny effects when called on >2Gb strings ;P
2006-04-19 15:09:44 +00:00
Jeremy Hylton a4ebc135ac Refactor: Move code that uses co_lnotab from ceval to codeobject 2006-04-18 14:47:00 +00:00
Anthony Baxter a863d334aa low-hanging fruit in Python/ - g++ still hates all the enum_kind declarations
in Python/Python-ast.c. Not sure what to do about those.
2006-04-11 07:43:46 +00:00
Phillip J. Eby 2ba96610bf SF Patch #1463867: Improved generator finalization to allow generators
that are suspended outside of any try/except/finally blocks to be
garbage collected even if they are part of a cycle.  Generators that
suspend inside of an active try/except or try/finally block (including
those created by a ``with`` statement) are still not GC-able if they
are part of a cycle, however.
2006-04-10 17:51:05 +00:00
Armin Rigo d34fa52a06 answer a question from a comment 2006-03-28 19:10:40 +00:00
Neal Norwitz 90768424f8 Fix a ssize_t issue 2006-03-23 05:48:09 +00:00
Guido van Rossum f669436189 Um, I thought I'd already checked this in.
Anyway, this is the changes to the with-statement
so that __exit__ must return a true value in order
for a pending exception to be ignored.
The PEP (343) is already updated.
2006-03-10 02:28:35 +00:00
Guido van Rossum 38fff8c4e4 Checking in the code for PEP 357.
This was mostly written by Travis Oliphant.
I've inspected it all; Neal Norwitz and MvL have also looked at it
(in an earlier incarnation).
2006-03-07 18:50:55 +00:00
Hye-Shik Chang 4af5c8cee4 SF #1444030: Fix several potential defects found by Coverity.
(reviewed by Neal Norwitz)
2006-03-07 15:39:21 +00:00
Neal Norwitz 814e938d08 Use Py_ssize_t since we are working with list size below 2006-03-02 07:54:28 +00:00
Thomas Wouters 7f59732716 Put back the essence of Jeremy's original XXX comment. 2006-03-01 05:32:33 +00:00
Brett Cannon bf36409e2a PEP 352 implementation. Creates a new base class, BaseException, which has an
added message attribute compared to the previous version of Exception.  It is
also a new-style class, making all exceptions now new-style.  KeyboardInterrupt
and SystemExit inherit from BaseException directly.  String exceptions now
raise DeprecationWarning.

Applies patch 1104669, and closes bugs 1012952 and 518846.
2006-03-01 04:25:17 +00:00
Guido van Rossum 1a5e21e033 Updates to the with-statement:
- New semantics for __exit__() -- it must re-raise the exception
  if type is not None; the with-statement itself doesn't do this.
  (See the updated PEP for motivation.)

- Added context managers to:
  - file
  - thread.LockType
  - threading.{Lock,RLock,Condition,Semaphore,BoundedSemaphore}
  - decimal.Context

- Added contextlib.py, which defines @contextmanager, nested(), closing().

- Unit tests all around; bot no docs yet.
2006-02-28 21:57:43 +00:00
Thomas Wouters f7f438ba3b SF patch #1438387, PEP 328: relative and absolute imports.
- IMPORT_NAME takes an extra argument from the stack: the relativeness of
   the import. Only passed to __import__ when it's not -1.

 - __import__() takes an optional 5th argument for the same thing; it
   __defaults to -1 (old semantics: try relative, then absolute)

 - 'from . import name' imports name (be it module or regular attribute)
   from the current module's *package*. Likewise, 'from .module import name'
   will import name from a sibling to the current module.

 - Importing from outside a package is not allowed; 'from . import sys' in a
   toplevel module will not work, nor will 'from .. import sys' in a
   (single-level) package.

 - 'from __future__ import absolute_import' will turn on the new semantics
   for import and from-import: imports will be absolute, except for
   from-import with dots.

Includes tests for regular imports and importhooks, parser changes and a
NEWS item, but no compiler-package changes or documentation changes.
2006-02-28 16:09:29 +00:00
Brett Cannon a7446e3438 Check the return code for PyErr_Warn() when warning about raising string
exceptions.  This was triggered when 'warnings' had a filter set to "error"
that caught the string exception deprecation warning.
2006-02-27 23:39:10 +00:00
Guido van Rossum c2e20744b2 PEP 343 -- the with-statement.
This was started by Mike Bland and completed by Guido
(with help from Neal).

This still needs a __future__ statement added;
Thomas is working on Michael's patch for that aspect.

There's a small amount of code cleanup and refactoring
in ast.c, compile.c and ceval.c (I fixed the lltrace
behavior when EXT_POP is used -- however I had to make
lltrace a static global).
2006-02-27 22:32:47 +00:00
Georg Brandl 1dc5a84aee Bug #801349: document that start/stop/step slice arguments can be None 2006-02-19 00:12:42 +00:00
Martin v. Löwis dde99d2633 Remove size constraints in SLICE opcodes. 2006-02-17 15:57:41 +00:00
Martin v. Löwis 18e165558b Merge ssize_t branch. 2006-02-15 17:27:45 +00:00
Thomas Wouters 03ca23d892 Explain the clearing of the stack in a comment in Python/ceval.c's
call_function(), rather than commenting on the lack of an explanation in a
comment.
2006-02-10 22:51:45 +00:00
Jeremy Hylton af68c874a6 Add const to several API functions that take char *.
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 *.
2005-12-10 18:50:16 +00:00