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* closes bpo-35204: Disable thread and memory sanitizers for ↵Alexey Izbyshev2018-11-111-12/+31
| | | | | | | | | address_in_range(). (GH-10442) This function may access memory which is mapped but is considered free by libc allocator. It behaves so by design, therefore we need to suppress sanitizer reports. GCC doesn't support MSan, so disable only TSan for it.
* Neaten the code without any algorithmic change. (GH-10466)Raymond Hettinger2018-11-111-5/+2
| | | Remove unneeded assertion (we already know so is a PySetObject *).
* bpo-35199: Add an internal _PyTuple_ITEMS() macro (GH-10434)Victor Stinner2018-11-094-15/+15
| | | | | | | * _PyTuple_ITEMS() gives access to the tuple->ob_item field and cast the first argument to PyTupleObject*. This internal macro is only usable if Py_BUILD_CORE is defined. * Replace &PyTuple_GET_ITEM(ob, 0) with _PyTuple_ITEMS(ob). * Replace PyTuple_GET_ITEM(op, 1) with &_PyTuple_ITEMS(ob)[1].
* Optimize set.pop() to advance a pointer instead of indexing. (GH-10429)Raymond Hettinger2018-11-091-7/+8
| | | | | Gives approx 20% speed-up using clang depending on the number of elements in the set (the less dense the set, the more the speed-up). Uses the same entry++ logic used elsewhere in the setobject.c code.
* bpo-35081: Add pycore_fileutils.h (GH-10371)Victor Stinner2018-11-061-0/+1
| | | | Move Py_BUILD_CORE code from Include/fileutils.h to a new Include/internal/pycore_fileutils.h file.
* bpo-33462: Add __reversed__ to dict and dict views (GH-6827)Rémi Lapeyre2018-11-063-6/+230
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* bpo-35081: Move accu.h to Include/internal/pycore_accu.h (GH-10271)Victor Stinner2018-11-013-3/+3
| | | | | | | The accu.h header is no longer part of the Python C API: it has been moved to the "internal" headers which are restricted to Python itself. Replace #include "accu.h" with #include "pycore_accu.h".
* bpo-35081: Add _PyThreadState_GET() internal macro (GH-10266)Victor Stinner2018-11-016-11/+11
| | | | | | | | | | | | | | | | | | | | | | | | | If Py_BUILD_CORE is defined, the PyThreadState_GET() macro access _PyRuntime which comes from the internal pycore_state.h header. Public headers must not require internal headers. Move PyThreadState_GET() and _PyInterpreterState_GET_UNSAFE() from Include/pystate.h to Include/internal/pycore_state.h, and rename PyThreadState_GET() to _PyThreadState_GET() there. The PyThreadState_GET() macro of pystate.h is now redefined when pycore_state.h is included, to use the fast _PyThreadState_GET(). Changes: * Add _PyThreadState_GET() macro * Replace "PyThreadState_GET()->interp" with _PyInterpreterState_GET_UNSAFE() * Replace PyThreadState_GET() with _PyThreadState_GET() in internal C files (compiled with Py_BUILD_CORE defined), but keep PyThreadState_GET() in the public header files. * _testcapimodule.c: replace PyThreadState_GET() with PyThreadState_Get(); the module is not compiled with Py_BUILD_CORE defined. * pycore_state.h now requires Py_BUILD_CORE to be defined.
* bpo-35081: Add pycore_ prefix to internal header files (GH-10263)Victor Stinner2018-10-3126-37/+37
| | | | | | | | | | | | | | | | | | | | * Rename Include/internal/ header files: * pyatomic.h -> pycore_atomic.h * ceval.h -> pycore_ceval.h * condvar.h -> pycore_condvar.h * context.h -> pycore_context.h * pygetopt.h -> pycore_getopt.h * gil.h -> pycore_gil.h * hamt.h -> pycore_hamt.h * hash.h -> pycore_hash.h * mem.h -> pycore_mem.h * pystate.h -> pycore_state.h * warnings.h -> pycore_warnings.h * PCbuild project, Makefile.pre.in, Modules/Setup: add the Include/internal/ directory to the search paths of header files. * Update includes. For example, replace #include "internal/mem.h" with #include "pycore_mem.h".
* bpo-35081: Move Py_BUILD_CORE code to internal/mem.h (GH-10249)Victor Stinner2018-10-311-0/+1
| | | | | * Add #include "internal/mem.h" to C files using _PyMem_SetDefaultAllocator(). * Include/internal/mem.h now requires Py_BUILD_CORE to be defined.
* Fix a possible crash in range.__reversed__(). (GH-10252)Zackery Spytz2018-10-311-0/+1
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* bpo-33138: Change standard error message for non-pickleable and non-copyable ↵Serhiy Storchaka2018-10-311-3/+3
| | | | types. (GH-6239)
* bpo-35081: Cleanup pystate.c and pystate.h (GH-10240)Victor Stinner2018-10-301-2/+2
| | | | | | | | | | | | * Remove _PyThreadState_Current * Replace GET_TSTATE() with PyThreadState_GET() * Replace GET_INTERP_STATE() with _PyInterpreterState_GET_UNSAFE() * Replace direct access to _PyThreadState_Current with PyThreadState_GET() * Replace _PyThreadState_Current with _PyRuntime.gilstate.tstate_current * Rename SET_TSTATE() to _PyThreadState_SET(), name more consistent with _PyThreadState_GET() * Update outdated comments
* bpo-35059: Convert _Py_Dealloc() to static inline function (GH-10223)Victor Stinner2018-10-301-15/+9
| | | | | Convert _Py_Dealloc() macro into a static inline function. Moreover, it is now also defined as a static inline function if Py_TRACE_REFS is defined.
* bpo-33237: Improve AttributeError message for partially initialized module. ↵Serhiy Storchaka2018-10-301-2/+39
| | | | (GH-6398)
* bpo-33234 Improve list() pre-sizing for inputs with known lengths (GH-9846)Pablo Galindo2018-10-281-0/+40
| | | | | | | | | | | | The list() constructor isn't taking full advantage of known input lengths or length hints. This commit makes the constructor pre-size and not over-allocate when the input size is known (the input collection implements __len__). One on the main advantages is that this provides 12% difference in memory savings due to the difference between overallocating and allocating exactly the input size. For efficiency purposes and to avoid a performance regression for small generators and collections, the size of the input object is calculated using __len__ and not __length_hint__, as the later is considerably slower.
* bpo-35064 prefix smelly symbols that appear with COUNT_ALLOCS with _Py_ ↵Pablo Galindo2018-10-284-23/+23
| | | | | | | (GH-10152) Configuring python with ./configure --with-pydebug CFLAGS="-D COUNT_ALLOCS -O0" makes "make smelly" fail as some symbols were being exported without the "Py_" or "_Py" prefixes.
* bpo-34751: improved hash function for tuples (GH-9471)jdemeyer2018-10-281-25/+46
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* bpo-9263: _PyXXX_CheckConsistency() use _PyObject_ASSERT() (GH-10108)Victor Stinner2018-10-263-52/+64
| | | | | | | | | | Use _PyObject_ASSERT() in: * _PyDict_CheckConsistency() * _PyType_CheckConsistency() * _PyUnicode_CheckConsistency() _PyObject_ASSERT() dumps the faulty object if the assertion fails to help debugging.
* bpo-9263: Use _PyObject_ASSERT() in typeobject.c (GH-10111)Victor Stinner2018-10-261-10/+13
| | | | Replace assert() with _PyObject_ASSERT() in Objects/typeobject.c to dump the faulty object on assertion failure to ease debugging.
* bpo-9263: Use _PyObject_ASSERT() in object.c (GH-10110)Victor Stinner2018-10-261-18/+22
| | | | Replace assert() with _PyObject_ASSERT() in Objects/object.c to dump the faulty object on assertion failure to ease debugging.
* bpo-35059: Convert PyObject_INIT() to function (GH-10077)Victor Stinner2018-10-266-9/+9
| | | | | * Convert PyObject_INIT() and PyObject_INIT_VAR() macros to static inline functions. * Fix usage of these functions: cast to PyObject* or PyVarObject*.
* bpo-9263: _Py_NegativeRefcount() use _PyObject_AssertFailed() (GH-10109)Victor Stinner2018-10-261-8/+5
| | | | _Py_NegativeRefcount() now uses _PyObject_AssertFailed() to dump the object to help debugging.
* bpo-9263: Dump Python object on GC assertion failure (GH-10062)Victor Stinner2018-10-251-0/+52
| | | | | | | | | | | | | | | | | | | | | | | Changes: * Add _PyObject_AssertFailed() function. * Add _PyObject_ASSERT() and _PyObject_ASSERT_WITH_MSG() macros. * gc_decref(): replace assert() with _PyObject_ASSERT_WITH_MSG() to dump the faulty object if the assertion fails. _PyObject_AssertFailed() calls: * _PyMem_DumpTraceback(): try to log the traceback where the object memory has been allocated if tracemalloc is enabled. * _PyObject_Dump(): log repr(obj). * Py_FatalError(): log the current Python traceback. _PyObject_AssertFailed() uses _PyObject_IsFreed() heuristic to check if the object memory has been freed by a debug hook on Python memory allocators. Initial patch written by David Malcolm. Co-Authored-By: David Malcolm <dmalcolm@redhat.com>
* bpo-35059: Add Py_STATIC_INLINE() macro (GH-10093)Victor Stinner2018-10-251-2/+2
| | | | | | | | | * Add Py_STATIC_INLINE() macro to declare a "static inline" function. If the compiler supports it, try to always inline the function even if no optimization level was specified. * Modify pydtrace.h to use Py_STATIC_INLINE() when WITH_DTRACE is not defined. * Add an unit test on Py_DECREF() to make sure that _Py_NegativeRefcount() reports the correct filename.
* bpo-35053: Enhance tracemalloc to trace free lists (GH-10063)Victor Stinner2018-10-252-0/+9
| | | | | | | | | | | | tracemalloc now tries to update the traceback when an object is reused from a "free list" (optimization for faster object creation, used by the builtin list type for example). Changes: * Add _PyTraceMalloc_NewReference() function which tries to update the Python traceback of a Python object. * _Py_NewReference() now calls _PyTraceMalloc_NewReference(). * Add an unit test.
* bpo-30863: Rewrite PyUnicode_AsWideChar() and PyUnicode_AsWideCharString(). ↵Serhiy Storchaka2018-10-231-123/+121
| | | | | | (GH-2599) They no longer cache the wchar_t* representation of string objects.
* bpo-9263: _PyObject_Dump() detects freed memory (GH-10061)Victor Stinner2018-10-232-23/+71
| | | | | | | | | _PyObject_Dump() now uses an heuristic to check if the object memory has been freed: log "<freed object>" in that case. The heuristic rely on the debug hooks on Python memory allocators which fills the memory with DEADBYTE (0xDB) when memory is deallocated. Use PYTHONMALLOC=debug to always enable these debug hooks.
* Fix issue 34551 - remove redundant store (#9009)Eric Lippert2018-10-221-1/+1
| | | The assignment of i/2 to nk is redundant because on this code path, nk is already the size of the dictionary, and i is already twice the size of the dictionary. I've replaced the store with an assertion that i/2 is nk.
* bpo-34984: Improve error messages for bytes and bytearray constructors. ↵Serhiy Storchaka2018-10-212-6/+23
| | | | (GH-9874)
* bpo-34973: Fix crash in bytes constructor. (GH-9841)Serhiy Storchaka2018-10-211-35/+69
| | | Constructing bytes from mutating list could cause a crash.
* bpo-34574: Prevent OrderedDict iterators from exhaustion during pickling. ↵Sergey Fedoseev2018-10-201-28/+9
| | | | (GH-9051)
* bpo-34573: Simplify __reduce__() of set and dict iterators. (GH-9050)Sergey Fedoseev2018-10-202-59/+7
| | | | Simplify the pickling of set and dictionary objects iterators by consuming the iterator into a list with PySequence_List.
* bpo-33712: OrderedDict only creates od_fast_nodes cache if needed (GH-7349)Serhiy Storchaka2018-10-191-50/+18
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* bpo-33073: Rework int.as_integer_ratio() implementation (GH-9303)Serhiy Storchaka2018-10-191-6/+1
| | | | | * Simplify the C code. * Simplify tests and make them more strict and robust. * Add references in the documentation.
* bpo-34974: Do not replace unexpected errors in bytes() and bytearray(). ↵Serhiy Storchaka2018-10-142-3/+5
| | | | | | | (GH-9852) bytes and bytearray constructors converted unexpected exceptions (e.g. MemoryError and KeyboardInterrupt) to TypeError.
* bpo-34940: Fix the error handling in _check_for_legacy_statements(). (GH-9764)Zackery Spytz2018-10-121-8/+18
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* Micro-optimize list index range checks (GH-9784)Raymond Hettinger2018-10-111-5/+18
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* Add missing closing quote and trailing period in str.isidentifier() ↵Emanuele Gaifas2018-10-082-4/+4
| | | | | docstring (GH-9756) This rectifies commit ffc5a14d00db984c8e72c7b67da8a493e17e2c14.
* bpo-33014: Clarify str.isidentifier docstring (GH-6088)Sanyam Khurana2018-10-082-6/+6
| | | | | | * bpo-33014: Clarify str.isidentifier docstring * bpo-33014: Add code example in isidentifier documentation
* bpo-34910: Ensure that PyObject_Print() always returns -1 on error. (GH-9733)Zackery Spytz2018-10-061-2/+3
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* bpo-34899: Fix a possible assertion failure due to int_from_bytes_impl() ↵Zackery Spytz2018-10-051-1/+1
| | | | | | | (GH-9705) The _PyLong_FromByteArray() call in int_from_bytes_impl() was unchecked.
* bpo-34879: Fix a possible null pointer dereference in bytesobject.c (GH-9683)Zackery Spytz2018-10-031-1/+1
| | | | | formatfloat() was not checking if PyBytes_FromStringAndSize() failed, which could lead to a null pointer dereference in _PyBytes_FormatEx().
* bpo-30156: Remove property_descr_get() optimization (GH-9541)Victor Stinner2018-10-011-28/+5
| | | | | | | | | | | | | | | | property_descr_get() uses a "cached" tuple to optimize function calls. But this tuple can be discovered in debug mode with sys.getobjects(). Remove the optimization, it's not really worth it and it causes 3 different crashes last years. Microbenchmark: ./python -m perf timeit -v \ -s "from collections import namedtuple; P = namedtuple('P', 'x y'); p = P(1, 2)" \ --duplicate 1024 "p.x" Result: Mean +- std dev: [ref] 32.8 ns +- 0.8 ns -> [patch] 40.4 ns +- 1.3 ns: 1.23x slower (+23%)
* bpo-34320: Fix dict(o) didn't copy order of dict subclass (GH-8624)INADA Naoki2018-09-261-1/+3
| | | | | | | When dict subclass overrides order (`__iter__()`, `keys()`, and `items()`), `dict(o)` should use it instead of dict ordering. https://bugs.python.org/issue34320
* Fix compiler warning with a type cast (GH-9300)Raymond Hettinger2018-09-141-1/+1
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* Fix-up parenthesis, organization, and NULL check (GH-9297)Raymond Hettinger2018-09-141-6/+11
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* bpo-33073: Adding as_integer_ratio to ints. (GH-8750)Lisa Roach2018-09-142-1/+60
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* closes bpo-34646: Remove PyAPI_* macros from declarations. (GH-9218)Benjamin Peterson2018-09-122-2/+2
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* bpo-1621: Avoid signed integer overflow in set_table_resize(). (GH-9059)Sergey Fedoseev2018-09-111-8/+3
| | | | | | | | Address a C undefined behavior signed integer overflow issue in set object table resizing. Our -fwrapv compiler flag and practical reasons why sets are unlikely to get this large should mean this was never an issue but it was incorrect code that generates code analysis warnings. <!-- issue-number: [bpo-1621](https://www.bugs.python.org/issue1621) --> https://bugs.python.org/issue1621 <!-- /issue-number -->
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