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* bpo-43636: Validate the version tag in _PyType_Lookup (GH-25032)Pablo Galindo2021-03-271-1/+3
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* bpo-43198: Revert 3dd2157 that removed freeslot tracking. (#25010)Raymond Hettinger2021-03-241-1/+15
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* bpo-31861: Fix possible crash in PyAnextAwaitable_New (GH-25005)Pablo Galindo2021-03-241-1/+5
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* bpo-43244: Add pycore_compile.h header file (GH-25000)Victor Stinner2021-03-231-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | Remove the compiler functions using "struct _mod" type, because the public AST C API was removed: * PyAST_Compile() * PyAST_CompileEx() * PyAST_CompileObject() * PyFuture_FromAST() * PyFuture_FromASTObject() These functions were undocumented and excluded from the limited C API. Rename functions: * PyAST_CompileObject() => _PyAST_Compile() * PyFuture_FromASTObject() => _PyFuture_FromAST() Moreover, _PyFuture_FromAST() is no longer exported (replace PyAPI_FUNC() with extern). _PyAST_Compile() remains exported for test_peg_generator. Remove also compatibility functions: * PyAST_Compile() * PyAST_CompileEx() * PyFuture_FromAST()
* bpo-31861: Add aiter and anext to builtins (#23847)Joshua Bronson2021-03-232-2/+121
| | | | | | Co-authored-by: jab <jab@users.noreply.github.com> Co-authored-by: Daniel Pope <mauve@mauveweb.co.uk> Co-authored-by: Justin Wang <justin39@gmail.com>
* bpo-43452: Micro-optimizations to PyType_Lookup (GH-24804)Dino Viehland2021-03-201-28/+23
| | | | | | | | | The common case going through _PyType_Lookup is to have a cache hit. There are some small tweaks that can make this a little cheaper: * The name field identity is used for a cache hit and is kept alive by the cache. So there's no need to read the hash code o the name - instead, the address can be used as the hash. * There's no need to check if the name is cachable on the lookup either, it probably is, and if it is, it'll be in the cache. * If we clear the version tag when invalidating a type then we don't actually need to check for a valid version tag bit.
* bpo-43494: Make some minor changes to lnotab notes (GH-24861)Skip Montanaro2021-03-191-6/+6
| | | | This cleanup makes no substantive changes.
* bpo-43541: Fix PyEval_EvalCodeEx() regression (GH-24918)Victor Stinner2021-03-182-2/+2
| | | | | | | | | | | * Remove an assertion which required CO_NEWLOCALS and CO_OPTIMIZED code flags. It is ok to call this function on a code with these flags set. * Fix reference counting on builtins: remove Py_DECREF(). Fix regression introduced in the commit 46496f9d12582bf11f4911ad0f23315d6f277907. Add also a comment to document that _PyEval_BuiltinsFromGlobals() returns a borrowed reference.
* bpo-35883: Py_DecodeLocale() escapes invalid Unicode characters (GH-24843)Victor Stinner2021-03-171-4/+5
| | | | | | | | | | Python no longer fails at startup with a fatal error if a command line argument contains an invalid Unicode character. The Py_DecodeLocale() function now escapes byte sequences which would be decoded as Unicode characters outside the [U+0000; U+10ffff] range. Use MAX_UNICODE constant in unicodeobject.c.
* bpo-43441: Fix _PyType_ClearCache() for subinterpreters (GH-24822)junyixie2021-03-131-5/+10
| | | | | _PyType_ClearCache() now only resets next_version_tag in the main interpreter. Co-authored-by: Victor Stinner <vstinner@python.org>
* bpo-42128: Add __match_args__ to structseq-based classes (GH-24732)Pablo Galindo2021-03-041-0/+34
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* bpo-11717: fix ssize_t redefinition error when targeting 32bit Windows app ↵Jozef Grajciar2021-03-011-1/+1
| | | | (GH-24479)
* bpo-41972: Use the two-way algorithm for string searching (GH-22904)Dennis Sweeney2021-02-282-20/+901
| | | | | Implement an enhanced variant of Crochemore and Perrin's Two-Way string searching algorithm, which reduces worst-case time from quadratic (the product of the string and pattern lengths) to linear. This applies to forward searches (like``find``, ``index``, ``replace``); the algorithm for reverse searches (like ``rfind``) is not changed. Co-authored-by: Tim Peters <tim.peters@gmail.com>
* bpo-42128: Structural Pattern Matching (PEP 634) (GH-22917)Brandt Bucher2021-02-2610-11/+24
| | | | | Co-authored-by: Guido van Rossum <guido@python.org> Co-authored-by: Talin <viridia@gmail.com> Co-authored-by: Pablo Galindo <pablogsal@gmail.com>
* bpo-38302: __pow__/__rpow__ now called when __ipow__ returns NotImplemented ↵Alex2021-02-261-21/+27
| | | | (#16459)
* bpo-42808: Add PyType_Type.tp_vectorcall for type(obj) performance (GH-24058)Dennis Sweeney2021-02-221-0/+18
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* bpo-42093: Cleanup _PyDict_GetItemHint() (GH-24582)Victor Stinner2021-02-211-31/+4
| | | | | | * No longer save/restore the current exception. It is no longer used with an exception raised. * No longer clear the current exception on error: it's now up to the caller.
* bpo-43277: Add PySet_CheckExact to the C-API (GH-24598)Pablo Galindo2021-02-202-2/+2
| | | For some mysterious reason we have PySet_Check, PyFrozenSet_Check, PyAnySet_Check, PyAnySet_CheckExact and PyFrozenSet_CheckExact but no PySet_CheckExact.
* bpo-42990: Functions inherit current builtins (GH-24564)Victor Stinner2021-02-202-17/+10
| | | | | | | | | | | | | | | | | | | | The types.FunctionType constructor now inherits the current builtins if the globals dictionary has no "__builtins__" key, rather than using {"None": None} as builtins: same behavior as eval() and exec() functions. Defining a function with "def function(...): ..." in Python is not affected, globals cannot be overriden with this syntax: it also inherits the current builtins. PyFrame_New(), PyEval_EvalCode(), PyEval_EvalCodeEx(), PyFunction_New() and PyFunction_NewWithQualName() now inherits the current builtins namespace if the globals dictionary has no "__builtins__" key. * Add _PyEval_GetBuiltins() function. * _PyEval_BuiltinsFromGlobals() now uses _PyEval_GetBuiltins() if builtins cannot be found in globals. * Add tstate parameter to _PyEval_BuiltinsFromGlobals().
* bpo-43268: Pass interp rather than tstate to internal functions (GH-24580)Victor Stinner2021-02-1912-60/+59
| | | | | | | | | | | | | | | Pass the current interpreter (interp) rather than the current Python thread state (tstate) to internal functions which only use the interpreter. Modified functions: * _PyXXX_Fini() and _PyXXX_ClearFreeList() functions * _PyEval_SignalAsyncExc(), make_pending_calls() * _PySys_GetObject(), sys_set_object(), sys_set_object_id(), sys_set_object_str() * should_audit(), set_flags_from_config(), make_flags() * _PyAtExit_Call() * init_stdio_encoding() * etc.
* bpo-43268: _Py_IsMainInterpreter() now expects interp (GH-24577)Victor Stinner2021-02-193-3/+3
| | | | The _Py_IsMainInterpreter() function now expects interp rather than tstate.
* bpo-42990: Refactor _PyFrame_New_NoTrack() (GH-24566)Victor Stinner2021-02-182-103/+102
| | | | | | | | | | | | * Refactor _PyFrame_New_NoTrack() and PyFunction_NewWithQualName() code. * PyFrame_New() checks for _PyEval_BuiltinsFromGlobals() failure. * Fix a ref leak in _PyEval_BuiltinsFromGlobals() error path. * Complete PyFunction_GetModule() documentation: it returns a borrowed reference and it can return NULL. * Move _PyEval_BuiltinsFromGlobals() definition to the internal C API. * PyFunction_NewWithQualName() uses _Py_IDENTIFIER() API for the "__name__" string to make it compatible with subinterpreters.
* bpo-42990: Add __builtins__ attribute to functions (GH-24559)Victor Stinner2021-02-181-0/+1
| | | | | | Expose the new PyFunctionObject.func_builtins member in Python as a new __builtins__ attribute on functions. Document also the behavior change in What's New in Python 3.10.
* bpo-40170: Always define PyExceptionClass_Name() as a function (GH-24553)Erlend Egeberg Aasland2021-02-171-2/+0
| | | Remove macro variant of PyExceptionClass_Name().
* bpo-40170: Always define PyIter_Check() as a function (GH-24548)Erlend Egeberg Aasland2021-02-161-5/+5
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* bpo-40170: Convert PyDescr_IsData() to static inline function (GH-24535)Erlend Egeberg Aasland2021-02-161-0/+5
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* bpo-42990: Further refactoring of PyEval_ functions. (GH-24368)Mark Shannon2021-02-013-101/+31
| | | | | | | | | | * Further refactoring of PyEval_EvalCode and friends. Break into make-frame, and eval-frame parts. * Simplify function vector call using new _PyEval_Vector. * Remove unused internal functions: _PyEval_EvalCodeWithName and _PyEval_EvalCode. * Don't use legacy function PyEval_EvalCodeEx.
* bpo-40455: Fix gcc10+ warning about writing into a section of offset 0 ↵Pablo Galindo2021-01-301-2/+2
| | | | (GH-24384)
* bpo-42979: Use _Py_CheckSlotResult() to check slots result (GH-24356)Victor Stinner2021-01-292-191/+288
| | | | | | | | | | | | | | | When Python is built in debug mode (with C assertions), calling a type slot like sq_length (__len__() in Python) now fails with a fatal error if the slot succeeded with an exception set, or failed with no exception set. The error message contains the slot, the type name, and the current exception (if an exception is set). * Check the result of all slots using _Py_CheckSlotResult(). * No longer pass op_name to ternary_op() in release mode. * Replace operator with dunder Python method name in error messages. For example, replace "*" with "__mul__". * Fix compiler_exit_scope() when an exception is set. * Fix bytearray.extend() when an exception is set: don't call bytearray_setslice() with an exception set.
* bpo-42990: Introduce 'frame constructor' struct to simplify API for ↵Mark Shannon2021-01-293-80/+51
| | | | | | | PyEval_CodeEval and friends (GH-24298) * Introduce 'frame constructor' to simplify API for frame creation * Embed struct using a macro to conform to PEP 7
* bpo-42979: Enhance abstract.c assertions checking slot result (GH-24352)Victor Stinner2021-01-272-14/+39
| | | | | | | | * bpo-42979: Enhance abstract.c assertions checking slot result Add _Py_CheckSlotResult() function which fails with a fatal error if a slot function succeeded with an exception set or failed with no exception set: write the slot name, the type name and the current exception (if an exception is set).
* bpo-42923: Dump extension modules on fatal error (GH-24207)Victor Stinner2021-01-181-0/+13
| | | | | | | The Py_FatalError() function and the faulthandler module now dump the list of extension modules on a fatal error. Add _Py_DumpExtensionModules() and _PyModule_IsExtension() internal functions.
* bpo-42924: Fix incorrect copy in bytearray_repeat (GH-24208)Tobias Holl2021-01-131-2/+4
| | | | Before, using the * operator to repeat a bytearray would copy data from the start of the internal buffer (ob_bytes) and not from the start of the actual data (ob_start).
* bpo-42823: Fix frame lineno when frame.f_trace is set (GH-24099)Mark Shannon2021-01-052-8/+7
| | | | | | | | | * Add test for frame.f_lineno with/without tracing. * Make sure that frame.f_lineno is correct regardless of whether frame.f_trace is set. * Update importlib * Add NEWS
* bpo-42814: Fix undefined behavior in Objects/genericaliasobject.c (GH-24073)Zackery Spytz2021-01-031-1/+1
| | | | | In is_typing_name(), va_end() is not always called before the function returns. It is undefined behavior to call va_start() without also calling va_end().
* bpo-42195: Disallow isinstance/issubclass for subclasses of genericaliases ↵Ken Jin2021-01-021-1/+1
| | | | | | | | | | | | | | in Union (GH-24059) Previously this didn't raise an error. Now it will: ```python from collections.abc import Callable isinstance(int, list | Callable[..., str]) ``` Also added tests in Union since there were previously none for stuff like ``isinstance(list, list | list[int])`` either. Backport to 3.9 not required. Automerge-Triggered-By: GH:gvanrossum
* bpo-27794: Add `name` attribute to `property` class (GH-23967)Yurii Karabas2020-12-301-4/+48
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* bpo-40052: Fix alignment issue in PyVectorcall_Function() (GH-23999)Petr Viktorin2020-12-291-1/+2
| | | | | | | | | | | | | | | ``` In file included from /usr/include/python3.8/Python.h:147: In file included from /usr/include/python3.8/abstract.h:837: /usr/include/python3.8/cpython/abstract.h:91:11: error: cast from 'char *' to 'vectorcallfunc *' (aka 'struct _object *(**)(struct _object *, struct _object *const *, unsigned long, struct _object *)') increases required alignment from 1 to 8 [-Werror,-Wcast-align] ptr = (vectorcallfunc*)(((char *)callable) + offset); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1 error generated. ``` Co-Authored-By: Andreas Schneider <asn@cryptomilk.org> Co-Authored-By: Antoine Pitrou <antoine@python.org>
* Fix compiler warnings regarding loss of data (GH-23983)Pablo Galindo2020-12-291-1/+1
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* bpo-42745: finalize_interp_types() calls _PyType_Fini() (GH-23953)Victor Stinner2020-12-262-5/+6
| | | | | Call _PyType_Fini() in subinterpreters. Fix reference leaks in subinterpreters.
* bpo-40521: Per-interpreter interned strings (GH-20085)Victor Stinner2020-12-262-83/+28
| | | | | | | | | | | Make the Unicode dictionary of interned strings compatible with subinterpreters. Remove the INTERN_NAME_STRINGS macro in typeobject.c: names are always now interned (even if EXPERIMENTAL_ISOLATED_SUBINTERPRETERS macro is defined). _PyUnicode_ClearInterned() now uses PyDict_Next() to no longer allocate memory, to ensure that the interned dictionary is cleared.
* bpo-42745: Make the type cache per-interpreter (GH-23947)Victor Stinner2020-12-261-80/+98
| | | | | | | | | | | Make the type attribute lookup cache per-interpreter. Add private _PyType_InitCache() function, called by PyInterpreterState_New(). Continue to share next_version_tag between interpreters, since static types are still shared by interpreters. Remove MCACHE macro: the cache is no longer disabled if the EXPERIMENTAL_ISOLATED_SUBINTERPRETERS macro is defined.
* bpo-39465: Fix _PyUnicode_FromId() for subinterpreters (GH-20058)Victor Stinner2020-12-251-23/+62
| | | | | | | | | | | | | | | | | Make _PyUnicode_FromId() function compatible with subinterpreters. Each interpreter now has an array of identifier objects (interned strings decoded from UTF-8). * Add PyInterpreterState.unicode.identifiers: array of identifiers objects. * Add _PyRuntimeState.unicode_ids used to allocate unique indexes to _Py_Identifier. * Rewrite the _Py_Identifier structure. Microbenchmark on _PyUnicode_FromId(&PyId_a) with _Py_IDENTIFIER(a): [ref] 2.42 ns +- 0.00 ns -> [atomic] 3.39 ns +- 0.00 ns: 1.40x slower This change adds 1 ns per _PyUnicode_FromId() call in average.
* bpo-41559: Implement PEP 612 - Add ParamSpec and Concatenate to typing (#23702)kj2020-12-241-14/+62
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* bpo-42195: Ensure consistency of Callable's __args__ in collections.abc and ↵kj2020-12-132-24/+42
| | | | typing (GH-23060)
* bpo-42576: Raise TypeError when passing in keyword arguments to GenericAlias ↵kj2020-12-051-1/+1
| | | | | | | | | (GH-23656) Use `_PyArg_NoKeywords` instead of `_PyArg_NoKwnames` when checking the `kwds` tuple when creating `GenericAlias`. This fixes an interpreter crash when passing in keyword arguments to `GenericAlias`'s constructor. Needs backport to 3.9. Automerge-Triggered-By: GH:gvanrossum
* bpo-42536: GC track recycled tuples (GH-23623)Brandt Bucher2020-12-053-0/+26
| | | | | | | | | | | | | | | | Several built-in and standard library types now ensure that their internal result tuples are always tracked by the garbage collector: - collections.OrderedDict.items - dict.items - enumerate - functools.reduce - itertools.combinations - itertools.combinations_with_replacement - itertools.permutations - itertools.product - itertools.zip_longest - zip Previously, they could have become untracked by a prior garbage collection.
* bpo-42431: Fix outdated bytes comments (GH-23458)Serhiy Storchaka2020-12-035-35/+21
| | | | Also move definitions of internal macros F_LJUST etc to private header.
* bpo-42519: Replace PyObject_MALLOC() with PyObject_Malloc() (GH-23587)Victor Stinner2020-12-0113-45/+45
| | | | | | | | | No longer use deprecated aliases to functions: * Replace PyObject_MALLOC() with PyObject_Malloc() * Replace PyObject_REALLOC() with PyObject_Realloc() * Replace PyObject_FREE() with PyObject_Free() * Replace PyObject_Del() with PyObject_Free() * Replace PyObject_DEL() with PyObject_Free()
* bpo-42519: Replace PyMem_MALLOC() with PyMem_Malloc() (GH-23586)Victor Stinner2020-12-0111-53/+53
| | | | | | | | | | | No longer use deprecated aliases to functions: * Replace PyMem_MALLOC() with PyMem_Malloc() * Replace PyMem_REALLOC() with PyMem_Realloc() * Replace PyMem_FREE() with PyMem_Free() * Replace PyMem_Del() with PyMem_Free() * Replace PyMem_DEL() with PyMem_Free() Modify also the PyMem_DEL() macro to use directly PyMem_Free().
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