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* gh-125118: don't copy arbitrary values to _Bool in the struct module (GH-125169)Sergey B Kirpichev2024-10-101-3/+2
| | | | | | | | | | | memcopy'ing arbitrary values to _Bool variable triggers undefined behaviour. Avoid this. We assume that `false` is represented by all zero bytes. Credits to Alex Gaynor. Co-authored-by: Sam Gross <colesbury@gmail.com> Co-authored-by: Victor Stinner <vstinner@python.org> Co-authored-by: Petr Viktorin <encukou@gmail.com>
* gh-121249: Support _Complex types in the struct module (#121613)Sergey B Kirpichev2024-10-071-28/+261
| | | | | Co-authored-by: Peter Bierma <zintensitydev@gmail.com> Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com> Co-authored-by: Victor Stinner <vstinner@python.org>
* gh-124248: Fix crash in struct when processing 0p fields (#124251)Brian Schubert2024-09-201-4/+15
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* gh-121905: Consistently use "floating-point" instead of "floating point" ↵Serhiy Storchaka2024-07-191-1/+1
| | | | (GH-121907)
* gh-121040: Use __attribute__((fallthrough)) (#121044)Victor Stinner2024-06-271-2/+2
| | | | | | | | | | | | | Fix warnings when using -Wimplicit-fallthrough compiler flag. Annotate explicitly "fall through" switch cases with a new _Py_FALLTHROUGH macro which uses __attribute__((fallthrough)) if available. Replace "fall through" comments with _Py_FALLTHROUGH. Add _Py__has_attribute() macro. No longer define __has_attribute() macro if it's not defined. Move also _Py__has_builtin() at the top of pyport.h. Co-Authored-By: Nikita Sobolev <mail@sobolevn.me>
* gh-116322: Add Py_mod_gil module slot (#116882)Brett Simmers2024-05-031-0/+1
| | | | | | | | | | | | | | This PR adds the ability to enable the GIL if it was disabled at interpreter startup, and modifies the multi-phase module initialization path to enable the GIL when loading a module, unless that module's spec includes a slot indicating it can run safely without the GIL. PEP 703 called the constant for the slot `Py_mod_gil_not_used`; I went with `Py_MOD_GIL_NOT_USED` for consistency with gh-104148. A warning will be issued up to once per interpreter for the first GIL-using module that is loaded. If `-v` is given, a shorter message will be printed to stderr every time a GIL-using module is loaded (including the first one that issues a warning).
* gh-111140: Adds PyLong_AsNativeBytes and PyLong_FromNative[Unsigned]Bytes ↵Steve Dower2024-02-121-8/+12
| | | | functions (GH-114886)
* gh-111789: Use PyDict_GetItemRef() in Modules/_struct.c (gh-112076)Serhiy Storchaka2023-11-271-5/+4
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* gh-112358: Fix Python 3.12 regression with subclassing struct.Struct. (#112424)Mark Dickinson2023-11-261-26/+33
| | | | | | Revert commit c8c0afc7137ab9f22bf59d591084948ca967c97c (PR #94532), which moved `struct.Struct` initialisation from `Struct.__init__` to `Struct.__new__`. This caused issues with code in the wild that subclasses `struct.Struct`.
* gh-112062: Make `_struct` module thread-safe in `--disable-gil` builds (#112094)Radislav Chugunov2023-11-151-7/+6
| | | | | * gh-112062: Make `_struct` module thread-safe in --disable-gil builds
* Add missing `PyDoc_STR` calls (#109393)Nikita Sobolev2023-09-151-2/+2
| | | | | | | | | In files: * Modules/_ctypes/cfield.c * Modules/_struct.c * Objects/dictobject.c * Objects/typevarobject.c * Objects/unionobject.c
* gh-108765: Python.h no longer includes <ctype.h> (#108831)Victor Stinner2023-09-031-1/+0
| | | | | | | | | | | | | | | | | | | | | | | Remove <ctype.h> in C files which don't use it; only sre.c and _decimal.c still use it. Remove _PY_PORT_CTYPE_UTF8_ISSUE code from pyport.h: * Code added by commit b5047fd01948ab108edcc1b3c2c901d915814cfd in 2004 for MacOSX and FreeBSD. * Test removed by commit 52ddaefb6bab1a74ecffe8519c02735794ebfbe1 in 2007, since Python str type now uses locale independent functions like Py_ISALPHA() and Py_TOLOWER() and the Unicode database. Modules/_sre/sre.c replaces _PY_PORT_CTYPE_UTF8_ISSUE with new functions: sre_isalnum(), sre_tolower(), sre_toupper(). Remove unused includes: * _localemodule.c: remove <stdio.h>. * getargs.c: remove <float.h>. * dynload_win.c: remove <direct.h>, it no longer calls _getcwd() since commit fb1f68ed7cc1536482d1debd70a53c5442135fe2 (in 2001).
* gh-108494: Argument Clinic: inline parsing code for positional-only ↵Serhiy Storchaka2023-09-031-5/+7
| | | | parameters in the limited C API (GH-108622)
* gh-108494: Argument Clinic: fix support of Limited C API (GH-108536)Serhiy Storchaka2023-08-281-1/+2
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* gh-107406: Add better `struct.Struct` repr (#107407)denballakh2023-08-261-0/+14
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* gh-106320: Remove private PyLong C API functions (#108429)Victor Stinner2023-08-241-0/+1
| | | | | | | | | | | | | | | | Remove private PyLong C API functions: * _PyLong_AsByteArray() * _PyLong_DivmodNear() * _PyLong_Format() * _PyLong_Frexp() * _PyLong_FromByteArray() * _PyLong_FromBytes() * _PyLong_GCD() * _PyLong_Lshift() * _PyLong_Rshift() Move these functions to the internal C API. No longer export _PyLong_FromBytes() function.
* gh-106869: Use new PyMemberDef constant names (#106871)Victor Stinner2023-07-251-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * Remove '#include "structmember.h"'. * If needed, add <stddef.h> to get offsetof() function. * Update Parser/asdl_c.py to regenerate Python/Python-ast.c. * Replace: * T_SHORT => Py_T_SHORT * T_INT => Py_T_INT * T_LONG => Py_T_LONG * T_FLOAT => Py_T_FLOAT * T_DOUBLE => Py_T_DOUBLE * T_STRING => Py_T_STRING * T_OBJECT => _Py_T_OBJECT * T_CHAR => Py_T_CHAR * T_BYTE => Py_T_BYTE * T_UBYTE => Py_T_UBYTE * T_USHORT => Py_T_USHORT * T_UINT => Py_T_UINT * T_ULONG => Py_T_ULONG * T_STRING_INPLACE => Py_T_STRING_INPLACE * T_BOOL => Py_T_BOOL * T_OBJECT_EX => Py_T_OBJECT_EX * T_LONGLONG => Py_T_LONGLONG * T_ULONGLONG => Py_T_ULONGLONG * T_PYSSIZET => Py_T_PYSSIZET * T_NONE => _Py_T_NONE * READONLY => Py_READONLY * PY_AUDIT_READ => Py_AUDIT_READ * READ_RESTRICTED => Py_AUDIT_READ * PY_WRITE_RESTRICTED => _Py_WRITE_RESTRICTED * RESTRICTED => (READ_RESTRICTED | _Py_WRITE_RESTRICTED)
* gh-106320: Remove _PyBytesWriter C API (#106399)Victor Stinner2023-07-041-0/+1
| | | | Remove the _PyBytesWriter C API: move it to the internal C API (pycore_bytesobject.h).
* gh-104922: remove PY_SSIZE_T_CLEAN (#106315)Inada Naoki2023-07-021-2/+0
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* gh-104276: Make `_struct.unpack_iterator` type use type flag instead of ↵chgnrdv2023-05-091-7/+1
| | | | custom constructor (#104277)
* gh-99113: Add Py_MOD_PER_INTERPRETER_GIL_SUPPORTED (gh-104205)Eric Snow2023-05-051-0/+1
| | | Here we are doing no more than adding the value for Py_mod_multiple_interpreters and using it for stdlib modules. We will start checking for it in gh-104206 (once PyInterpreterState.ceval.own_gil is added in gh-104204).
* gh-98248: Normalizing the error messages in function struct.pack (GH-98252)Felix Ye2022-12-041-57/+130
| | | | Provide consistent and informative error messages in function struct.pack when its integral arguments are not in range.
* gh-99845: Use size_t type in __sizeof__() methods (#99846)Victor Stinner2022-11-301-6/+4
| | | | | | | | The implementation of __sizeof__() methods using _PyObject_SIZE() now use an unsigned type (size_t) to compute the size, rather than a signed type (Py_ssize_t). Cast explicitly signed (Py_ssize_t) values to unsigned type (Py_ssize_t).
* gh-99537: Use Py_SETREF(var, NULL) in C code (#99687)Victor Stinner2022-11-231-2/+1
| | | Replace "Py_DECREF(var); var = NULL;" with "Py_SETREF(var, NULL);".
* gh-99300: Use Py_NewRef() in Modules/ directory (#99468)Victor Stinner2022-11-141-4/+2
| | | | Replace Py_INCREF() and Py_XINCREF() with Py_NewRef() and Py_XNewRef() in test C files of the Modules/ directory.
* GH-78724: Initialize struct.Struct in __new__ (GH-94532)Kumar Aditya2022-09-251-33/+26
| | | | Closes https://github.com/python/cpython/issues/75960 Closes https://github.com/python/cpython/issues/78724
* gh-96735: Fix undefined behaviour in struct unpacking functions (#96739)Mark Dickinson2022-09-251-26/+70
| | | | | | | | | | This PR fixes undefined behaviour in the struct module unpacking support functions `bu_longlong`, `lu_longlong`, `bu_int` and `lu_int`; thanks to @kumaraditya303 for finding these. The fix is to accumulate the bytes in an unsigned integer type instead of a signed integer type, then to convert to the appropriate signed type. In cases where the width matches, that conversion will typically be compiled away to a no-op. (Evidence from Godbolt: https://godbolt.org/z/5zvxodj64 .) To make the conversions efficient, I've specialised the relevant functions for their output size: for `bu_longlong` and `lu_longlong`, this only entails checking that the output size is indeed `8`. But `bu_int` and `lu_int` were used for format sizes `2` and `4` - I've split those into two separate functions each. No tests, because all of the affected cases are already exercised by the test suite.
* GH-94254: Make _struct module types immutable (#94269)Kumar Aditya2022-06-261-2/+4
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* gh-94207: Fix struct module leak (GH-94239)Mark Dickinson2022-06-251-2/+20
| | | | | | | | | | | | Make _struct.Struct a GC type This fixes a memory leak in the _struct module, where as soon as a Struct object is stored in the cache, there's a cycle from the _struct module to the cache to Struct objects to the Struct type back to the module. If _struct.Struct is not gc-tracked, that cycle is never collected. This PR makes _struct.Struct GC-tracked, and adds a regression test.
* gh-91320: Use _PyCFunction_CAST() (#92251)Victor Stinner2022-05-031-4/+4
| | | | | | | | | | Replace "(PyCFunction)(void(*)(void))func" cast with _PyCFunction_CAST(func). Change generated by the command: sed -i -e \ 's!(PyCFunction)(void(\*)(void)) *\([A-Za-z0-9_]\+\)!_PyCFunction_CAST(\1)!g' \ $(find -name "*.c")
* bpo-46906: Add PyFloat_Pack8() to the C API (GH-31657)Victor Stinner2022-03-111-11/+8
| | | | | | | | | | | | | | | | | | | | | | Add new functions to pack and unpack C double (serialize and deserialize): * PyFloat_Pack2(), PyFloat_Pack4(), PyFloat_Pack8() * PyFloat_Unpack2(), PyFloat_Unpack4(), PyFloat_Unpack8() Document these functions and add unit tests. Rename private functions and move them from the internal C API to the public C API: * _PyFloat_Pack2() => PyFloat_Pack2() * _PyFloat_Pack4() => PyFloat_Pack4() * _PyFloat_Pack8() => PyFloat_Pack8() * _PyFloat_Unpack2() => PyFloat_Unpack2() * _PyFloat_Unpack4() => PyFloat_Unpack4() * _PyFloat_Unpack8() => PyFloat_Unpack8() Replace the "unsigned char*" type with "char*" which is more common and easy to use.
* bpo-46613: Add PyType_GetModuleByDef to the public API (GH-31081)Petr Viktorin2022-02-111-1/+1
| | | | | * Make PyType_GetModuleByDef public (remove underscore) Co-authored-by: Victor Stinner <vstinner@python.org>
* bpo-46670: Remove unused macros in the Modules directory (GH-31194)Victor Stinner2022-02-071-2/+0
| | | | | * bpo-46670: Remove unused macros in the Modules directory * Add again LINKAT_DIR_FD_CONVERTER: generated by Argument Clinic
* bpo-43974: Move Py_BUILD_CORE_MODULE into module code (GH-29157)Christian Heimes2021-10-221-0/+4
| | | | | | | | | | | | | | setup.py no longer defines Py_BUILD_CORE_MODULE. Instead every module defines the macro before #include "Python.h" unless Py_BUILD_CORE_BUILTIN is already defined. Py_BUILD_CORE_BUILTIN is defined for every module that is built by Modules/Setup. The PR also simplifies Modules/Setup. Makefile and makesetup already define Py_BUILD_CORE_BUILTIN and include Modules/internal for us. Signed-off-by: Christian Heimes <christian@python.org>
* bpo-35134: Add Include/cpython/floatobject.h (GH-28957)Victor Stinner2021-10-141-0/+1
| | | | | Split Include/floatobject.h into sub-files: add Include/cpython/floatobject.h and Include/internal/pycore_floatobject.h.
* bpo-45407: Remove outdated XXX comment from Struct___init___impl (GH-28805)Jeong YunWon2021-10-081-1/+0
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* bpo-45034: Fix how upper limit is formatted for `struct.pack("H", ...)` ↵Nikita Sobolev2021-09-071-6/+6
| | | | | | (GH-28178) Co-authored-by: Mark Dickinson <dickinsm@gmail.com> Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
* bpo-40137: Add pycore_moduleobject.h internal header (GH-25507)Victor Stinner2021-04-211-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add pycore_moduleobject.h internal header file with static inline functions to access module members: * _PyModule_GetDict() * _PyModule_GetDef() * _PyModule_GetState() These functions don't check at runtime if their argument has a valid type and can be inlined even if Python is not built with LTO. _PyType_GetModuleByDef() uses _PyModule_GetDef(). Replace PyModule_GetState() with _PyModule_GetState() in the extension modules, considered as performance sensitive: * _abc * _functools * _operator * _pickle * _queue * _random * _sre * _struct * _thread * _winapi * array * posix The following extensions are now built with the Py_BUILD_CORE_MODULE macro defined, to be able to use the internal pycore_moduleobject.h header: _abc, array, _operator, _queue, _sre, _struct.
* Use Py_NewRef in Modules/_struct.c (GH-23981)Pablo Galindo2020-12-281-2/+1
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* bpo-42519: Replace PyMem_MALLOC() with PyMem_Malloc() (GH-23586)Victor Stinner2020-12-011-3/+3
| | | | | | | | | | | 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().
* bpo-1635741: Fix _struct for build bot error (GH-23402)Dong-hee Na2020-11-191-1/+1
| | | Automerge-Triggered-By: GH:tiran
* bpo-1635741: Port _struct to multiphase initialization (GH-23398)Christian Heimes2020-11-191-233/+265
| | | Signed-off-by: Christian Heimes <christian@python.org>
* bpo-40792: Make the result of PyNumber_Index() always having exact type int. ↵Serhiy Storchaka2020-05-281-1/+1
| | | | | | | | | | | | (GH-20443) Previously, the result could have been an instance of a subclass of int. Also revert bpo-26202 and make attributes start, stop and step of the range object having exact type int. Add private function _PyNumber_Index() which preserves the old behavior of PyNumber_Index() for performance to use it in the conversion functions like PyLong_AsLong().
* bpo-40217: Ensure Py_VISIT(Py_TYPE(self)) is always called for ↵Pablo Galindo2020-05-271-0/+1
| | | | | | | | | PyType_FromSpec types (reverts GH-19414) (GH-20264) Heap types now always visit the type in tp_traverse. See added docs for details. This reverts commit 0169d3003be3d072751dd14a5c84748ab63a249f. Automerge-Triggered-By: @encukou
* bpo-35714: Reject null characters in struct format strings (GH-16928)Zackery Spytz2020-05-251-0/+5
| | | | struct.error is now raised if there is a null character in a struct format string.
* bpo-40268: Remove unused structmember.h includes (GH-19530)Victor Stinner2020-04-151-1/+1
| | | | | | If only offsetof() is needed: include stddef.h instead. When structmember.h is used, add a comment explaining that PyMemberDef is used.
* bpo-39943: Add the const qualifier to pointers on non-mutable PyBytes data. ↵Serhiy Storchaka2020-04-121-2/+2
| | | | (GH-19472)
* bpo-39689: Do not use native packing for format "?" with standard size ↵Stefan Krah2020-03-241-0/+3
| | | | (GH-18969)
* bpo-39968: Convert extension modules' macros of get_module_state() to inline ↵Hai Shi2020-03-161-11/+23
| | | | functions (GH-19017)
* bpo-39573: Clean up modules and headers to use Py_IS_TYPE() function (GH-18521)Dong-hee Na2020-02-171-1/+1
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