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* gh-67877: Fix memory leaks in terminated RE matching (GH-126840)Serhiy Storchaka2024-11-181-5/+127
| | | | | | | | If SRE(match) function terminates abruptly, either because of a signal or because memory allocation fails, allocated SRE_REPEAT blocks might be never released. Co-authored-by: <wjssz@users.noreply.github.com>
* gh-122854: Add Py_HashBuffer() function (#122855)Victor Stinner2024-08-301-1/+1
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* gh-121645: Add PyBytes_Join() function (#121646)Victor Stinner2024-08-301-2/+2
| | | | * Replace _PyBytes_Join() with PyBytes_Join(). * Keep _PyBytes_Join() as an alias to PyBytes_Join().
* Update PyObject_Del() documentation (#122597)Victor Stinner2024-08-021-1/+1
| | | Replace PyMem_Del() with PyMem_Free().
* gh-119344: Make critical section API public (#119353)Sam Gross2024-06-211-1/+1
| | | | | | | | | | This makes the following macros public as part of the non-limited C-API for locking a single object or two objects at once. * `Py_BEGIN_CRITICAL_SECTION(op)` / `Py_END_CRITICAL_SECTION()` * `Py_BEGIN_CRITICAL_SECTION2(a, b)` / `Py_END_CRITICAL_SECTION2()` The supporting functions and structs used by the macros are also exposed for cases where C macros are not available.
* gh-120155: Add assertion to sre.c match_getindex() (#120402)Victor Stinner2024-06-121-0/+2
| | | | Add an assertion to help static analyzers to detect that i*2 cannot overflow.
* gh-120244: Fix re.sub() reference leak (GH-120245)neonene2024-06-081-0/+1
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* 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-112075: Add critical sections for most dict APIs (#114508)Dino Viehland2024-02-061-12/+15
| | | | | | | | | Starts adding thread safety to dict objects. Use @critical_section for APIs which are exposed via argument clinic and don't directly correlate with a public C API which needs to acquire the lock Use a _lock_held suffix for keeping changes to complicated functions simple and just wrapping them with a critical section Acquire and release the lock in an existing function where it won't be overly disruptive to the existing logic
* Output more details in the re tracing (GH-111357)Serhiy Storchaka2023-10-261-0/+3
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* gh-109747: Improve errors for unsupported look-behind patterns (GH-109859)Serhiy Storchaka2023-10-141-2/+0
| | | | | | Now re.error is raised instead of OverflowError or RuntimeError for too large width of look-behind pattern. The limit is increased to 2**32-1 (was 2**31-1).
* gh-110590: Fix a bug where _sre.compile would overwrite exceptions (#110591)Nikita Sobolev2023-10-101-0/+3
| | | | TypeError would be overwritten by OverflowError if 'code' param contained non-ints.
* gh-108765: Python.h no longer includes <ctype.h> (#108831)Victor Stinner2023-09-031-5/+33
| | | | | | | | | | | | | | | | | | | | | | | 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-106320: Remove private _PyDict functions (#108449)Victor Stinner2023-08-241-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | Move private functions to the internal C API (pycore_dict.h): * _PyDictView_Intersect() * _PyDictView_New() * _PyDict_ContainsId() * _PyDict_DelItemId() * _PyDict_DelItem_KnownHash() * _PyDict_GetItemIdWithError() * _PyDict_GetItem_KnownHash() * _PyDict_HasSplitTable() * _PyDict_NewPresized() * _PyDict_Next() * _PyDict_Pop() * _PyDict_SetItemId() * _PyDict_SetItem_KnownHash() * _PyDict_SizeOf() No longer export most of these functions. Move also the _PyDictViewObject structure to the internal C API. Move dict_getitem_knownhash() function from _testcapi to the _testinternalcapi extension. Update test_capi.test_dict for this change.
* gh-106869: Use new PyMemberDef constant names (#106871)Victor Stinner2023-07-251-10/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 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-86493: Use PyModule_Add() instead of PyModule_AddObjectRef() (GH-106860)Serhiy Storchaka2023-07-181-6/+1
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* gh-106508: Improve debugging of the _sre module (GH-106509)Serhiy Storchaka2023-07-081-5/+27
| | | | | | | Now the VERBOSE macro can control tracing on per-pattern basis: * 0 -- disabled * 1 -- only if the DEBUG flag set * 2 -- always
* gh-106524: Fix a crash in _sre.template() (GH-106525)Radislav Chugunov2023-07-081-0/+2
| | | | | | Some items remained uninitialized if _sre.template() was called with invalid indices. Then attempt to clear them in the destructor led to dereferencing of uninitialized pointer.
* gh-104922: remove PY_SSIZE_T_CLEAN (#106315)Inada Naoki2023-07-021-2/+0
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* gh-105687: Remove deprecated objects from `re` module (#105688)Nikita Sobolev2023-06-141-1/+0
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* gh-92536: Remove PyUnicode_READY() calls (#105210)Victor Stinner2023-06-011-2/+0
| | | | Since Python 3.12, PyUnicode_READY() does nothing and always returns 0.
* 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-99300: Use Py_NewRef() in Modules/ directory (#99468)Victor Stinner2022-11-141-52/+27
| | | | Replace Py_INCREF() and Py_XINCREF() with Py_NewRef() and Py_XNewRef() in test C files of the Modules/ directory.
* gh-98740: Fix validation of conditional expressions in RE (GH-98764)Serhiy Storchaka2022-11-031-27/+29
| | | | | | | | | | | In very rare circumstances the JUMP opcode could be confused with the argument of the opcode in the "then" part which doesn't end with the JUMP opcode. This led to incorrect detection of the final JUMP opcode and incorrect calculation of the size of the subexpression. NOTE: Changed return value of functions _validate_inner() and _validate_charset() in Modules/_sre/sre.c. Now they return 0 on success, -1 on failure, and 1 if the last op is JUMP (which usually is a failure). Previously they returned 1 on success and 0 on failure.
* gh-91524: Speed up the regular expression substitution (#91525)Serhiy Storchaka2022-10-231-41/+277
| | | | | | | | | Functions re.sub() and re.subn() and corresponding re.Pattern methods are now 2-3 times faster for replacement strings containing group references. Closes #91524 Primarily authored by serhiy-storchaka Serhiy Storchaka Minor-cleanups-by: Gregory P. Smith [Google] <greg@krypto.org>
* gh-91404: Revert "bpo-23689: re module, fix memory leak when a match is ↵Gregory P. Smith2022-06-171-43/+22
| | | | | | | | | | | | terminated by a signal or allocation failure (GH-32283) (#93882) Revert "bpo-23689: re module, fix memory leak when a match is terminated by a signal or memory allocation failure (GH-32283)" This reverts commit 6e3eee5c11b539e9aab39cff783acf57838c355a. Manual fixups to increase the MAGIC number and to handle conflicts with a couple of changes that landed after that. Thanks for reviews by Ma Lin and Serhiy Storchaka.
* gh-93741: Add private C API _PyImport_GetModuleAttrString() (GH-93742)Serhiy Storchaka2022-06-141-11/+1
| | | | | | It combines PyImport_ImportModule() and PyObject_GetAttrString() and saves 4-6 lines of code on every use. Add also _PyImport_GetModuleAttr() which takes Python strings as arguments.
* gh-92728: Restore re.template, but deprecate it (GH-93161)Miro Hrončok2022-05-251-0/+1
| | | | | | Revert "bpo-47211: Remove function re.template() and flag re.TEMPLATE (GH-32300)" This reverts commit b09184bf05b07b77c5ecfedd4daa846be3cbf0a9.
* bpo-47211: Remove function re.template() and flag re.TEMPLATE (GH-32300)Serhiy Storchaka2022-04-061-1/+0
| | | They were undocumented and never working.
* bpo-47152: Move sources of the _sre module into a subdirectory (GH-32290)Serhiy Storchaka2022-04-041-0/+3063
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