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* gh-96512: Move int_max_str_digits setting to PyConfig (#96944)Gregory P. Smith2022-10-031-1/+2
| | | | | | | | | | | It had to live as a global outside of PyConfig for stable ABI reasons in the pre-3.12 backports. This removes the `_Py_global_config_int_max_str_digits` and gets rid of the equivalent field in the internal `struct _is PyInterpreterState` as code can just use the existing nested config struct within that. Adds tests to verify unique settings and configs in subinterpreters.
* gh-96848: Fix -X int_max_str_digits option parsing (#96988)Victor Stinner2022-09-261-0/+2
| | | | | Fix command line parsing: reject "-X int_max_str_digits" option with no value (invalid) when the PYTHONINTMAXSTRDIGITS environment variable is set to a valid limit.
* gh-95778: CVE-2020-10735: Prevent DoS by very large int() (#96499)Gregory P. Smith2022-09-021-0/+33
| | | | | | | | | | | | | | | | Integer to and from text conversions via CPython's bignum `int` type is not safe against denial of service attacks due to malicious input. Very large input strings with hundred thousands of digits can consume several CPU seconds. This PR comes fresh from a pile of work done in our private PSRT security response team repo. Signed-off-by: Christian Heimes [Red Hat] <christian@python.org> Tons-of-polishing-up-by: Gregory P. Smith [Google] <greg@krypto.org> Reviews via the private PSRT repo via many others (see the NEWS entry in the PR). <!-- gh-issue-number: gh-95778 --> * Issue: gh-95778 <!-- /gh-issue-number --> I wrote up [a one pager for the release managers](https://docs.google.com/document/d/1KjuF_aXlzPUxTK4BMgezGJ2Pn7uevfX7g0_mvgHlL7Y/edit#). Much of that text wound up in the Issue. Backports PRs already exist. See the issue for links.
* bpo-45445: Revert "bpo-45445: Fail if an invalid X-option is provided in the ↵Pablo Galindo Salgado2022-07-311-11/+2
| | | | command line (GH-28823)" (#94745)
* gh-90300: split --help output into separate options (#30331)Éric2022-06-011-12/+33
| | | | | | Make --help output shorter and add new help options. --help-env, --help-xoptions and --help-all command-line options are added to complement --help.
* gh-69443: Add test.support.Py_DEBUG constant (#93226)Victor Stinner2022-05-251-8/+5
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* gh-57684: Update tests for PYTHONSAFEPATH=1 (#92358)Victor Stinner2022-05-061-1/+4
| | | | | Fix tests failing with the PYTHONSAFEPATH=1 env var. Enhance also -P help in Python usage (python --help).
* gh-57684: Add -P cmdline option and PYTHONSAFEPATH env var (#31542)Victor Stinner2022-05-051-4/+6
| | | | | | | | | | | | Add the -P command line option and the PYTHONSAFEPATH environment variable to not prepend a potentially unsafe path to sys.path. * Add sys.flags.safe_path flag. * Add PyConfig.safe_path member. * Programs/_bootstrap_python.c uses config.safe_path=0. * Update subprocess._optim_args_from_interpreter_flags() to handle the -P command line option. * Modules/getpath.py sets safe_path to 1 if a "._pth" file is present.
* gh-91156: Use `locale.getencoding()` instead of getpreferredencoding (GH-91732)Inada Naoki2022-04-221-1/+1
| | | Co-authored-by: Victor Stinner <vstinner@python.org>
* bpo-46421: Fix unittest filename evaluation when called as a module (GH-30654)Bader Zaidan2022-03-171-0/+11
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* bpo-1635741: test_embed cheks that Python does not leak (GH-31555)Victor Stinner2022-02-241-1/+1
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* bpo-40280: Skip subprocess-based tests on wasm32-emscripten (GH-30615)Christian Heimes2022-01-251-0/+2
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* bpo-46417: Clear symtable identifiers at exit (GH-30809)Victor Stinner2022-01-221-1/+4
| | | | | | Add _PySymtable_Fini() function, called by finalize_interp_clear(). Update test_cmd_line.test_showrefcount() to tolerate negative reference count.
* bpo-45020: Add tests for the -X "frozen_modules" option. (gh-28997)Eric Snow2021-10-251-0/+15
| | | | | We hadn't explicitly added any tests for this, so here they are. https://bugs.python.org/issue45020
* bpo-45445: Fail if an invalid X-option is provided in the command line ↵Pablo Galindo Salgado2021-10-131-2/+11
| | | | (GH-28823)
* bpo-45229: Remove test_main in many tests (GH-28405)Serhiy Storchaka2021-09-191-3/+4
| | | | | | | | | Instead of explicitly enumerate test classes for run_unittest() use the unittest ability to discover tests. This also makes these tests discoverable and runnable with unittest. load_tests() can be used for dynamic generating tests and adding doctests. setUpModule(), tearDownModule() and addModuleCleanup() can be used for running code before and after all module tests.
* bpo-43825: Fix deprecation warnings in test_cmd_line and test_collections ↵Karthikeyan Singaravelan2021-04-141-1/+1
| | | | | | (GH-25380) * Fix deprecation warnings due to invalid escape sequences. * Use self.assertEqual instead of deprecated self.assertEquals.
* bpo-43651: PEP 597: Fix EncodingWarning in some tests (GH-25145)Inada Naoki2021-04-041-3/+3
| | | | | | | | | | | | | | | | | | | * test_asyncio * test_bz2 * test_math * test_cmath * test_cmd_line * test_cmd_line_script * test_compile * test_contextlib * test_profile * ctypes/test/test_find * test_multiprocessing * test_configparser * test_csv * test_dbm_dumb * test_decimal * test_difflib * os.fdopen() calls io.text_encoding() to emit EncodingWarning for right place.
* bpo-43591: Fix error location in interactive mode for errors at the end of ↵Pablo Galindo2021-03-221-2/+8
| | | | | the line (GH-24973) Co-authored-by: Erlend Egeberg Aasland
* bpo-35883: Py_DecodeLocale() escapes invalid Unicode characters (GH-24843)Victor Stinner2021-03-171-26/+60
| | | | | | | | | | 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-43410: Fix crash in the parser when producing syntax errors when reading ↵Pablo Galindo2021-03-141-1/+8
| | | | from stdin (GH-24763)
* bpo-32381: pymain_run_command() uses PyCF_IGNORE_COOKIE (GH-23724)Victor Stinner2020-12-231-0/+8
| | | | | | | | | | The coding cookie (ex: "# coding: latin1") is now ignored in the command passed to the -c command line option. Since pymain_run_command() uses UTF-8, pass PyCF_IGNORE_COOKIE compiler flag to the parser. pymain_run_python() no longer propages compiler flags between function calls.
* bpo-41525: Make the Python program help ASCII-only (GH-21836)Serhiy Storchaka2020-09-091-1/+5
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* bpo-40275: Use new test.support helper submodules in tests (GH-20849)Hai Shi2020-06-251-7/+9
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* bpo-40527: Fix command line argument parsing (GH-19955)Victor Stinner2020-05-061-0/+11
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* bpo-13601: always use line-buffering for sys.stderr (GH-17646)Jendrik Seipp2020-01-011-0/+16
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* bpo-38991: Remove test.support.strip_python_stderr() (GH-17490)Victor Stinner2019-12-081-3/+3
| | | | | test.support: run_python_until_end(), assert_python_ok() and assert_python_failure() functions no longer strip whitespaces from stderr.
* Remove unused imports in tests (GH-14518)Victor Stinner2019-07-011-1/+0
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* bpo-31904: Port test_cmd_line to VxWorks (#12648)Lihua Zhao2019-04-171-0/+2
| | | subprocess.Popen doesn't support preexec on VxWorks.
* Revert "bpo-34589: Add -X coerce_c_locale command line option (GH-9378)" ↵Victor Stinner2018-09-191-5/+2
| | | | | | | | | | | | | | | | (GH-9430) * Revert "bpo-34589: Add -X coerce_c_locale command line option (GH-9378)" This reverts commit dbdee0073cf0b88fe541980ace1f650900f455cc. * Revert "bpo-34589: C locale coercion off by default (GH-9073)" This reverts commit 7a0791b6992d420dc52536257f2f093851ed7215. * Revert "bpo-34589: Make _PyCoreConfig.coerce_c_locale private (GH-9371)" This reverts commit 188ebfa475a6f6aa2d0ea14ca8e1fbe7865b6d27.
* bpo-34589: Add -X coerce_c_locale command line option (GH-9378)Victor Stinner2018-09-181-2/+5
| | | | Add a new -X coerce_c_locale command line option to control C locale coercion (PEP 538).
* bpo-34170: Enhance _PyCoreConfig_Read() (GH-8468)Victor Stinner2018-07-261-3/+1
| | | | | | | | | | | | * Inline cmdline_get_env_flags() into config_read_env_vars(): _PyCoreConfig_Read() now reads much more environment variables like PYTHONVERBOSE. * Allow to override faulthandler and allocator even if dev_mode=1. PYTHONMALLOC is now the priority over PYTHONDEVMODE. * Fix _PyCoreConfig_Copy(): copy also install_signal_handlers, coerce_c_locale and coerce_c_locale_warn * _PyCoreConfig.install_signal_handlers default is now 1: install signals by default * Fix also a compiler warning: don't define _PyPathConfig type twice.
* bpo-34170: Add _PyCoreConfig.bytes_warning (GH-8447)Victor Stinner2018-07-241-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Add more fields to _PyCoreConfig: * _check_hash_pycs_mode * bytes_warning * debug * inspect * interactive * legacy_windows_fs_encoding * legacy_windows_stdio * optimization_level * quiet * unbuffered_stdio * user_site_directory * verbose * write_bytecode Changes: * Remove pymain_get_global_config() and pymain_set_global_config() which became useless. These functions have been replaced by _PyCoreConfig_GetGlobalConfig() and _PyCoreConfig_SetGlobalConfig(). * sys.flags.dont_write_bytecode value is now restricted to 1 even if -B option is specified multiple times on the command line. * PyThreadState_Clear() now uses the config from the current interpreter rather than using global Py_VerboseFlag
* Revert "bpo-33671: Add support.MS_WINDOWS and support.MACOS (GH-7800)" (GH-7919)Victor Stinner2018-06-261-2/+2
| | | This reverts commit 8fbbdf0c3107c3052659e166f73990b466eacbb0.
* bpo-33671: Add support.MS_WINDOWS and support.MACOS (GH-7800)Victor Stinner2018-06-221-2/+2
| | | | | | | | * Add support.MS_WINDOWS: True if Python is running on Microsoft Windows. * Add support.MACOS: True if Python is running on Apple macOS. * Replace support.is_android with support.ANDROID * Replace support.is_jython with support.JYTHON * Cleanup code to initialize unix_shell
* bpo-33499: Add PYTHONPYCACHEPREFIX env var for alt bytecode cache location. ↵Carl Meyer2018-06-161-0/+26
| | | | | | | | | | | | | | | (GH-6834) In some development setups it is inconvenient or impossible to write bytecode caches to the code tree, but the bytecode caches are still useful. The PYTHONPYCACHEPREFIX environment variable allows specifying an alternate location for cached bytecode files, within which a directory tree mirroring the code tree will be created. This cache tree is then used (for both reading and writing) instead of the local `__pycache__` subdirectory within each source directory. Exposed at runtime as sys.pycache_prefix (defaulting to None), and can be set from the CLI as "-X pycache_prefix=path". Patch by Carl Meyer.
* bpo-32457: Improves handling of denormalized executable path when launching ↵Steve Dower2018-02-221-0/+11
| | | | Python (GH-5756)
* Improves the ability to build in CI (GH-5728)Steve Dower2018-02-181-5/+5
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* bpo-31975 (PEP 565): Show DeprecationWarning in __main__ (GH-4458)Nick Coghlan2018-01-081-0/+2
| | | | | | | | | | | | | - primary change is to add a new default filter entry for 'default::DeprecationWarning:__main__' - secondary change is an internal one to cope with plain strings in the warning module's internal filter list (this avoids the need to create a compiled regex object early on during interpreter startup) - assorted documentation updates, including many more examples of configuring the warnings settings - additional tests to ensure that both the pure Python and the C accelerated warnings modules have the expected default configuration
* bpo-29240, bpo-32030: Py_Main() re-reads config if encoding changes (#4899)Victor Stinner2017-12-161-1/+1
| | | | | | | | | | | | | | | | | | bpo-29240, bpo-32030: If the encoding change (C locale coerced or UTF-8 Mode changed), Py_Main() now reads again the configuration with the new encoding. Changes: * Add _Py_UnixMain() called by main(). * Rename pymain_free_pymain() to pymain_clear_pymain(), it can now be called multipled times. * Rename pymain_parse_cmdline_envvars() to pymain_read_conf(). * Py_Main() now clears orig_argc and orig_argv at exit. * Remove argv_copy2, Py_Main() doesn't modify argv anymore. There is no need anymore to get two copies of the wchar_t** argv. * _PyCoreConfig: add coerce_c_locale and coerce_c_locale_warn. * Py_UTF8Mode is now initialized to -1. * Locale coercion (PEP 538) now respects -I and -E options.
* bpo-32329: Fix -R option for hash randomization (#4873)Victor Stinner2017-12-141-2/+10
| | | | | | | | | | | | bpo-32329, bpo-32030: * The -R option now turns on hash randomization when the PYTHONHASHSEED environment variable is set to 0 Previously, the option was ignored. * sys.flags.hash_randomization is now properly set to 0 when hash randomization is turned off by PYTHONHASHSEED=0. * _PyCoreConfig_ReadEnv() now reads the PYTHONHASHSEED environment variable. _Py_HashRandomization_Init() now only apply the configuration, it doesn't read PYTHONHASHSEED anymore.
* bpo-32230: Set sys.warnoptions with -X dev (#4820)Victor Stinner2017-12-121-21/+60
| | | | | | | | | | | | | | Rather than supporting dev mode directly in the warnings module, this instead adjusts the initialisation code to add an extra 'default' entry to sys.warnoptions when dev mode is enabled. This ensures that dev mode behaves *exactly* as if `-Wdefault` had been passed on the command line, including in the way it interacts with `sys.warnoptions`, and with other command line flags like `-bb`. Fix also bpo-20361: have -b & -bb options take precedence over any other warnings options. Patch written by Nick Coghlan, with minor modifications of Victor Stinner.
* bpo-32101: Add PYTHONDEVMODE environment variable (#4624)Victor Stinner2017-11-301-2/+35
| | | | | | * bpo-32101: Add sys.flags.dev_mode flag Rename also the "Developer mode" to the "Development mode". * bpo-32101: Add PYTHONDEVMODE environment variable Mention it in the development chapiter.
* bpo-32030: Rework memory allocators (#4625)Victor Stinner2017-11-291-2/+50
| | | | | | | | | | | | | | | | | | | | * Fix _PyMem_SetupAllocators("debug"): always restore allocators to the defaults, rather than only caling _PyMem_SetupDebugHooks(). * Add _PyMem_SetDefaultAllocator() helper to set the "default" allocator. * Add _PyMem_GetAllocatorsName(): get the name of the allocators * main() now uses debug hooks on memory allocators if Py_DEBUG is defined, rather than calling directly malloc() * Document default memory allocators in C API documentation * _Py_InitializeCore() now fails with a fatal user error if PYTHONMALLOC value is an unknown memory allocator, instead of failing with a fatal internal error. * Add new tests on the PYTHONMALLOC environment variable * Add support.with_pymalloc() * Add the _testcapi.WITH_PYMALLOC constant and expose it as support.with_pymalloc(). * sysconfig.get_config_var('WITH_PYMALLOC') doesn't work on Windows, so replace it with support.with_pymalloc(). * pythoninfo: add _testcapi collector for pymem
* bpo-32089: Use default action for ResourceWarning (#4584)Victor Stinner2017-11-271-17/+4
| | | | | In development and debug mode, use the "default" action, rather than the "always" action, for ResourceWarning in the default warnings filters.
* bpo-32089: Fix warnings filters in dev mode (#4482)Victor Stinner2017-11-211-6/+46
| | | | | | | | | | The developer mode (-X dev) now creates all default warnings filters to order filters in the correct order to always show ResourceWarning and make BytesWarning depend on the -b option. Write a functional test to make sure that ResourceWarning is logged twice at the same location in the developer mode. Add a new 'dev_mode' field to _PyCoreConfig.
* bpo-32043: New "developer mode": "-X dev" option (#4413)Victor Stinner2017-11-161-14/+55
| | | | | | | | | | | | | Add a new "developer mode": new "-X dev" command line option to enable debug checks at runtime. Changes: * Add unit tests for -X dev * test_cmd_line: replace test.support with support. * Fix _PyRuntimeState_Fini(): Use the same memory allocator than _PyRuntimeState_Init(). * Fix _PyMem_GetDefaultRawAllocator()
* bpo-31845: Fix reading flags from environment (GH-4105)Nick Coghlan2017-10-251-1/+34
| | | | | | | | | | The startup refactoring means command line settings are now applied after settings are read from the environment. This updates the way command line settings are applied to account for that, ensures more settings are first read from the environment in _PyInitializeCore, and adds a simple test case covering the flags that are easy to check.
* bpo-30404: The -u option now makes the stdout and stderr streams totally ↵Serhiy Storchaka2017-10-041-4/+3
| | | | unbuffered. (#1667)
* bpo-28180: Implementation for PEP 538 (#659)Nick Coghlan2017-06-111-2/+4
| | | | | | | | | | - new PYTHONCOERCECLOCALE config setting - coerces legacy C locale to C.UTF-8, C.utf8 or UTF-8 by default - always uses C.UTF-8 on Android - uses `surrogateescape` on stdin and stdout in the coercion target locales - configure option to disable locale coercion at build time - configure option to disable C locale warning at build time
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