summaryrefslogtreecommitdiffstats
path: root/Lib/test/test_sys.py
Commit message (Collapse)AuthorAgeFilesLines
* [3.8] gh-95778: CVE-2020-10735: Prevent DoS by very large int() (#96503)Gregory P. Smith2022-09-051-2/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * Correctly pre-check for int-to-str conversion Converting a large enough `int` to a decimal string raises `ValueError` as expected. However, the raise comes _after_ the quadratic-time base-conversion algorithm has run to completion. For effective DOS prevention, we need some kind of check before entering the quadratic-time loop. Oops! =) The quick fix: essentially we catch _most_ values that exceed the threshold up front. Those that slip through will still be on the small side (read: sufficiently fast), and will get caught by the existing check so that the limit remains exact. The justification for the current check. The C code check is: ```c max_str_digits / (3 * PyLong_SHIFT) <= (size_a - 11) / 10 ``` In GitHub markdown math-speak, writing $M$ for `max_str_digits`, $L$ for `PyLong_SHIFT` and $s$ for `size_a`, that check is: $$\left\lfloor\frac{M}{3L}\right\rfloor \le \left\lfloor\frac{s - 11}{10}\right\rfloor$$ From this it follows that $$\frac{M}{3L} < \frac{s-1}{10}$$ hence that $$\frac{L(s-1)}{M} > \frac{10}{3} > \log_2(10).$$ So $$2^{L(s-1)} > 10^M.$$ But our input integer $a$ satisfies $|a| \ge 2^{L(s-1)}$, so $|a|$ is larger than $10^M$. This shows that we don't accidentally capture anything _below_ the intended limit in the check. <!-- gh-issue-number: gh-95778 --> * Issue: gh-95778 <!-- /gh-issue-number --> Co-authored-by: Gregory P. Smith [Google LLC] <greg@krypto.org> Co-authored-by: Christian Heimes <christian@python.org> Co-authored-by: Mark Dickinson <dickinsm@gmail.com>
* bpo-43660: Fix crash when displaying exceptions with custom values for ↵Miss Islington (bot)2021-03-291-0/+15
| | | | | | | sys.stderr (GH-25075) (cherry picked from commit 09b90a037d18f5d4acdf1b14082e57bda78e85d3) Co-authored-by: Pablo Galindo <Pablogsal@gmail.com>
* Remove unused imports in tests (GH-14518) (GH-14520)Victor Stinner2019-07-011-1/+0
| | | (cherry picked from commit 8f4ef3b019ce380022018587571b0f970e668de3)
* bpo-37467: Fix PyErr_Display() for bytes filename (GH-14504)Miss Islington (bot)2019-07-011-47/+76
| | | | | | | | | | | | | | | | | Fix sys.excepthook() and PyErr_Display() if a filename is a bytes string. For example, for a SyntaxError exception where the filename attribute is a bytes string. Cleanup also test_sys: * Sort imports. * Rename numruns global var to INTERN_NUMRUNS. * Add DisplayHookTest and ExceptHookTest test case classes. * Don't save/restore sys.stdout and sys.displayhook using setUp()/tearDown(): do it in each test method. * Test error case (call hook with no argument) after the success case. (cherry picked from commit f9b7457bd7f438263e0d2dd1f70589ad56a2585e) Co-authored-by: Victor Stinner <vstinner@redhat.com>
* [3.8] bpo-37250: put back tp_print for backwards compatibility (GH-14193)Jeroen Demeyer2019-06-251-1/+1
| | | | | | This is a 3.8-only compatibility measure for third-party Cython-based sdists. https://bugs.python.org/issue37250
* bpo-20602: Do not clear sys.flags and sys.float_info during shutdown (GH-8096)Zackery Spytz2019-05-301-0/+16
| | | There is no need to clear these immutable objects during shutdown.
* bpo-36974: implement PEP 590 (GH-13185)Jeroen Demeyer2019-05-291-4/+4
| | | | | Co-authored-by: Jeroen Demeyer <J.Demeyer@UGent.be> Co-authored-by: Mark Shannon <mark@hotpy.org>
* bpo-36829: Add _PyErr_WriteUnraisableMsg() (GH-13488)Victor Stinner2019-05-271-17/+27
| | | | | * sys.unraisablehook: add 'err_msg' field to UnraisableHookArgs. * Use _PyErr_WriteUnraisableMsg() in _ctypes _DictRemover_call() and gc delete_garbage().
* bpo-36829: PyErr_WriteUnraisable() normalizes exception (GH-13507)Victor Stinner2019-05-221-10/+5
| | | | | | PyErr_WriteUnraisable() now creates a traceback object if there is no current traceback. Moreover, call PyErr_NormalizeException() and PyException_SetTraceback() to normalize the exception value. Ignore silently any error.
* bpo-36829: Add test.support.catch_unraisable_exception() (GH-13490)Victor Stinner2019-05-221-0/+41
| | | | | | * Copy test_exceptions.test_unraisable() to test_sys.UnraisableHookTest(). * Use catch_unraisable_exception() in test_coroutines, test_exceptions, test_generators.
* bpo-36829: Add sys.unraisablehook() (GH-13187)Victor Stinner2019-05-221-4/+76
| | | | | | | | | | | | | | | | | | | Add new sys.unraisablehook() function which can be overridden to control how "unraisable exceptions" are handled. It is called when an exception has occurred but there is no way for Python to handle it. For example, when a destructor raises an exception or during garbage collection (gc.collect()). Changes: * Add an internal UnraisableHookArgs type used to pass arguments to sys.unraisablehook. * Add _PyErr_WriteUnraisableDefaultHook(). * The default hook now ignores exception on writing the traceback. * test_sys now uses unittest.main() to automatically discover tests: remove test_main(). * Add _PyErr_Init(). * Fix PyErr_WriteUnraisable(): hold a strong reference to sys.stderr while using it
* bpo-36611: Fix test_sys.test_getallocatedblocks() (GH-12797)Victor Stinner2019-04-121-2/+7
| | | | | | | | | | | | | | | | Fix test_sys.test_getallocatedblocks() when tracemalloc is enabled. If the name of Python memory allocators cannot get read, consider that pymalloc is disabled. Fix the following error: ./python -X tracemalloc -m test test_sys -v -m test_getallocatedblocks ERROR: test_getallocatedblocks (test.test_sys.SysModuleTest) ------------------------------------------------------------ Traceback (most recent call last): File "Lib/test/test_sys.py", line 770, in test_getallocatedblocks alloc_name = _testcapi.pymem_getallocatorsname() RuntimeError: cannot get allocators name
* bpo-30040: new empty dict uses key-sharing dict (GH-1080)Inada Naoki2019-03-121-1/+3
| | | | Sizeof new empty dict becomes 72 bytes from 240 bytes (amd64). It is same size to empty dict created by dict.clear().
* bpo-35202: Remove unused imports in Lib directory. (GH-10446)Srinivas Thatiparthy (శ్రీనివాస్ తాటిపర్తి)2018-11-101-1/+0
|
* Revert "bpo-34589: Add -X coerce_c_locale command line option (GH-9378)" ↵Victor Stinner2018-09-191-5/+3
| | | | | | | | | | | | | | | | (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 Stinner2018-09-181-3/+5
| | | | Add a new -X coerce_c_locale command line option to control C locale coercion (PEP 538).
* bpo-34523: Add _PyCoreConfig.filesystem_encoding (GH-8963)Victor Stinner2018-08-291-0/+10
| | | | | | | | | | | | | | | | | | | | | | | _PyCoreConfig_Read() is now responsible to choose the filesystem encoding and error handler. Using Py_Main(), the encoding is now chosen even before calling Py_Initialize(). _PyCoreConfig.filesystem_encoding is now the reference, instead of Py_FileSystemDefaultEncoding, for the Python filesystem encoding. Changes: * Add filesystem_encoding and filesystem_errors to _PyCoreConfig * _PyCoreConfig_Read() now reads the locale encoding for the file system encoding. * PyUnicode_EncodeFSDefault() and PyUnicode_DecodeFSDefaultAndSize() now use the interpreter configuration rather than Py_FileSystemDefaultEncoding and Py_FileSystemDefaultEncodeErrors global configuration variables. * Add _Py_SetFileSystemEncoding() and _Py_ClearFileSystemEncoding() private functions to only modify Py_FileSystemDefaultEncoding and Py_FileSystemDefaultEncodeErrors in coreconfig.c. * _Py_CoerceLegacyLocale() now takes an int rather than _PyCoreConfig for the warning.
* bpo-34485: stdout uses surrogateescape on POSIX locale (GH-8986)Victor Stinner2018-08-291-9/+15
| | | | | | | Standard streams like sys.stdout now use the "surrogateescape" error handler, instead of "strict", on the POSIX locale (when the C locale is not coerced and the UTF-8 Mode is disabled). Add tests on sys.stdout.errors with LC_ALL=POSIX.
* bpo-34485: Enhance init_sys_streams() (GH-8978)Victor Stinner2018-08-281-3/+3
| | | | | | | | | | | | | | | Python now gets the locale encoding with C code to initialize the encoding of standard streams like sys.stdout. Moreover, the encoding is now initialized to the Python codec name to get a normalized encoding name and to ensure that the codec is loaded. The change avoids importing _bootlocale and _locale modules at startup by default. When the PYTHONIOENCODING environment variable only contains an encoding, the error handler is now is now set explicitly to "strict". Rename also get_default_standard_stream_error_handler() to get_stdio_errors(). Reduce the buffer to format the "cpXXX" string (Windows locale encoding).
* bpo-33128 Fix duplicated call to importlib._install_external_importers ↵Pablo Galindo2018-04-251-0/+3
| | | | | | | | | (GH-6273) External importers were being added in both phases of the import system initialisation. They're only supposed to be added in the second phase, after the import machinery has been appropriately configured.
* bpo-29240: PEP 540: Add a new UTF-8 Mode (#855)Victor Stinner2017-12-131-3/+5
| | | | | | | | | | | | | | | | | | | | | | * Add -X utf8 command line option, PYTHONUTF8 environment variable and a new sys.flags.utf8_mode flag. * If the LC_CTYPE locale is "C" at startup: enable automatically the UTF-8 mode. * Add _winapi.GetACP(). encodings._alias_mbcs() now calls _winapi.GetACP() to get the ANSI code page * locale.getpreferredencoding() now returns 'UTF-8' in the UTF-8 mode. As a side effect, open() now uses the UTF-8 encoding by default in this mode. * Py_DecodeLocale() and Py_EncodeLocale() now use the UTF-8 encoding in the UTF-8 Mode. * Update subprocess._args_from_interpreter_flags() to handle -X utf8 * Skip some tests relying on the current locale if the UTF-8 mode is enabled. * Add test_utf8mode.py. * _Py_DecodeUTF8_surrogateescape() gets a new optional parameter to return also the length (number of wide characters). * pymain_get_global_config() and pymain_set_global_config() now always copy flag values, rather than only copying if the new value is greater than the old value.
* bpo-32101: Add PYTHONDEVMODE environment variable (#4624)Victor Stinner2017-11-301-2/+4
| | | | | | * 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 Stinner2017-11-291-1/+8
| | | | | | | | | | | | | | | | | | | | * 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-31949: Fixed several issues in printing tracebacks ↵Serhiy Storchaka2017-11-151-0/+33
| | | | | | | | | | | | (PyTraceBack_Print()). (#4289) * Setting sys.tracebacklimit to 0 or less now suppresses printing tracebacks. * Setting sys.tracebacklimit to None now causes using the default limit. * Setting sys.tracebacklimit to an integer larger than LONG_MAX now means using the limit LONG_MAX rather than the default limit. * Fixed integer overflows in the case of more than 2**31 traceback items on Windows. * Fixed output errors handling.
* Fix the sizeof test for dicts with shared keys. (#4311)Serhiy Storchaka2017-11-071-5/+10
| | | | By accident the size of the empty dict keys object matched the size of values array.
* Move exc state to generator. Fixes bpo-25612 (#1773)Mark Shannon2017-10-221-2/+2
| | | Move exception state information from frame objects to coroutine (generator/thread) object where it belongs.
* bpo-31344: Per-frame control of trace events (GH-3417)Nick Coghlan2017-09-081-1/+1
| | | | | | | | | f_trace_lines: enable/disable line trace events f_trace_opcodes: enable/disable opcode trace events These are intended primarily for testing of the interpreter itself, as they make it much easier to emulate signals arriving at unfortunate times.
* bpo-31370: Remove support for threads-less builds (#3385)Antoine Pitrou2017-09-071-30/+2
| | | | | | * Remove Setup.config * Always define WITH_THREAD for compatibility.
* bpo-28180: Implementation for PEP 538 (#659)Nick Coghlan2017-06-111-0/+1
| | | | | | | | | | - 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
* bpo-12414: Update code_sizeof() to take in account co_extra memory. (#1168)Dong-hee Na2017-04-201-3/+5
|
* bpo-29919: Remove unused imports found by pyflakes (#137)Victor Stinner2017-03-271-1/+0
| | | Make also minor PEP8 coding style fixes on modified imports.
* bpo-6532: Make the thread id an unsigned integer. (#781)Serhiy Storchaka2017-03-231-0/+3
| | | | | | | | | | | * bpo-6532: Make the thread id an unsigned integer. From C API side the type of results of PyThread_start_new_thread() and PyThread_get_thread_ident(), the id parameter of PyThreadState_SetAsyncExc(), and the thread_id field of PyThreadState changed from "long" to "unsigned long". * Restore a check in thread_get_ident().
* Issue #18896: Python function can now have more than 255 parameters.Serhiy Storchaka2016-12-161-1/+1
| | | | collections.namedtuple() now supports tuples with more than 255 elements.
* Add sys.getandroidapilevel()Victor Stinner2016-12-021-0/+7
| | | | | | | Issue #28740: Add sys.getandroidapilevel(): return the build time API version of Android as an integer. Function only available on Android.
* Try to fix sizeof unit tests on dictVictor Stinner2016-09-101-3/+3
| | | | Issue #28056 and issue #26058.
* Issue #28003: Implement PEP 525 -- Asynchronous Generators.Yury Selivanov2016-09-091-0/+26
|
* Issue #24254: Drop cls.__definition_order__.Eric Snow2016-09-081-1/+1
|
* Add a new private version to the builtin dict typeVictor Stinner2016-09-081-3/+3
| | | | | | | Issue #26058: Add a new private version to the builtin dict type, incremented at each dictionary creation and at each dictionary change. Implementation of the PEP 509.
* Fixes tests broken by issue #27781.Steve Dower2016-09-081-2/+3
|
* Implement compact dictVictor Stinner2016-09-081-5/+5
| | | | | | | | | | | | Issue #27350: `dict` implementation is changed like PyPy. It is more compact and preserves insertion order. _PyDict_Dummy() function has been removed. Disable test_gdb: python-gdb.py is not updated yet to the new structure of compact dictionaries (issue #28023). Patch written by INADA Naoki.
* fix expected layout of code objectsBenjamin Peterson2016-09-071-3/+3
|
* Issue #24254: Preserve class attribute definition order.Eric Snow2016-09-051-1/+1
|
* Issue #19527: Fixed tests with defined COUNT_ALLOCS.Serhiy Storchaka2016-07-031-2/+6
|
* Issue #26778: Fixed "a/an/and" typos in code comment and documentation.Serhiy Storchaka2016-04-171-1/+1
|
* Issue #25339: PYTHONIOENCODING now has priority over locale in setting theSerhiy Storchaka2016-04-101-4/+23
| | | | error handler for stdin and stdout.
* Fixed sizeof tests for dict and type (they were passed by accident).Serhiy Storchaka2015-12-201-11/+22
| | | | Added tests for dict views iterators.
* Don't create non-needed file.Serhiy Storchaka2015-12-201-5/+0
|
* Use correct PyGC_Head size in tests for issue #25421.Serhiy Storchaka2015-12-191-1/+1
|
* Issue #25421: __sizeof__ methods of builtin types now use dynamic basic size.Serhiy Storchaka2015-12-191-0/+30
| | | | | This allows sys.getsize() to work correctly with their subclasses with __slots__ defined.
* sys.setrecursionlimit() now raises RecursionErrorVictor Stinner2015-10-121-7/+45
| | | | | | | Issue #25274: sys.setrecursionlimit() now raises a RecursionError if the new recursion limit is too low depending at the current recursion depth. Modify also the "lower-water mark" formula to make it monotonic. This mark is used to decide when the overflowed flag of the thread state is reset.
generated by cgit v0.12 at 2025-09-06 12:10:28 (GMT)