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Author	SHA1	Message	Date
Pablo Galindo Salgado	d6d850df89	gh-138122: Don't sample partial frame chains (#141912)	2025-12-07 15:53:48 +00:00
Pablo Galindo Salgado	c5b37228af	gh-138122: Improve the profiling section in the 3.15 what's new document (#140156)	2025-12-07 02:46:33 +00:00
Pablo Galindo Salgado	edff5aaa48	gh-142368: Refactor test_external_inspection to reduce flakiness in parallel execution (#142369)	2025-12-07 02:32:20 +00:00
Pablo Galindo Salgado	572c780aa8	gh-138122: Implement frame caching in RemoteUnwinder to reduce memory reads (#142137) ... This PR implements frame caching in the RemoteUnwinder class to significantly reduce memory reads when profiling remote processes with deep call stacks. When cache_frames=True, the unwinder stores the frame chain from each sample and reuses unchanged portions in subsequent samples. Since most profiling samples capture similar call stacks (especially the parent frames), this optimization avoids repeatedly reading the same frame data from the target process. The implementation adds a last_profiled_frame field to the thread state that tracks where the previous sample stopped. On the next sample, if the current frame chain reaches this marker, the cached frames from that point onward are reused instead of being re-read from remote memory. The sampling profiler now enables frame caching by default.	2025-12-06 22:37:34 +00:00
Savannah Ostrowski	332da6295f	GH-142363: Contrast and gradient CSS fixes for Tachyon flamegraph (#142364)	2025-12-06 22:09:10 +00:00
Ivo Bellin Salarin	9d707d8a64	gh-68552: fix defects policy (#138579) ... Extend defect handling via policy to a couple of missed defects. --------- Co-authored-by: Martin Panter <vadmium@users.noreply.github.com> Co-authored-by: Ivo Bellin Salarin <ivo@nilleb.com>	2025-12-06 16:54:29 -05:00
Pablo Galindo Salgado	ed4f78a4b3	gh-142236: Fix incorrect keyword suggestions for syntax errors (#142328) ... The keyword typo suggestion mechanism in traceback would incorrectly suggest replacements when the extracted source code was merely incomplete rather than containing an actual typo. For example, when a missing comma caused a syntax error, the system would suggest replacing 'print' with 'not' because the incomplete code snippet happened to pass validation. The fix adds a validation step that first checks whether the original extracted code raises a SyntaxError. If the code compiles successfully or is simply incomplete (compile_command returns None), the function returns early since there is no way to verify that a keyword replacement would actually fix the problem.	2025-12-06 21:09:35 +00:00
Paresh Joshi	07eff899d8	gh-142006: Fix HeaderWriteError in email.policy.default caused by extra newline (#142008) ... RDM: This fixes a subtle folding error that showed up when a token exactly filled a line and was followed by whitespace and a token with no folding whitespace that was longer than a line. In this particular circumstance the whitespace after the first token got pushed on to the next line, and then stolen to go in front of the next unfoldable token...leaving a completely empty line in the line buffer. That line got turned in to a newline, which is RFC illegal, and the newish security check caught it. The fix is to just delete that empty line from the buffer. Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>	2025-12-06 15:59:35 -05:00
Sanyam Khurana	100e316e53	gh-69113: Fix doctest to report line numbers for __test__ strings (#141624) ... Enhanced the _find_lineno method in doctest to correctly identify and report line numbers for doctests defined in __test__ dictionaries when formatted as triple-quoted strings. Finds a non-blank line in the test string and matches it in the source file, verifying subsequent lines also match to handle duplicate lines. Previously, doctest would report "line None" for __test__ dictionary strings, making it difficult to debug failing tests. Co-authored-by: Jurjen N.E. Bos <jneb@users.sourceforge.net> Co-authored-by: R. David Murray <rdmurray@bitdance.com>	2025-12-06 15:47:08 -05:00
ivonastojanovic	c91c373ef6	gh-140677 Improve heatmap colors (#142241) ... Co-authored-by: Pablo Galindo Salgado <pablogsal@gmail.com>	2025-12-06 20:27:16 +00:00
Kaisheng Xu	14715e3a64	gh-105836: Fix asyncio.run_coroutine_threadsafe leaving underlying cancelled asyncio task running (#141696) ... Co-authored-by: Kumar Aditya <kumaraditya@python.org>	2025-12-06 19:33:25 +00:00
Savannah Ostrowski	56a442d0d8	GH-141565: Add async code awareness to Tachyon (#141533) ... Co-authored-by: Pablo Galindo Salgado <pablogsal@gmail.com>	2025-12-06 19:31:40 +00:00
Kir Chou	35142b18ae	gh-142168: explicitly initialize stack_array in _PyEval_Vector and _PyEvalFramePushAndInit_Ex (#142192) ... Co-authored-by: Kir Chou <note351@hotmail.com>	2025-12-06 19:59:52 +01:00
Savannah Ostrowski	0ed56ed88f	GH-64532: Include parent's required optional arguments in subparser usage (#142355)	2025-12-06 18:30:50 +00:00
Serhiy Storchaka	70c27ce94b	gh-142332: Fix usage formatting for positional arguments in mutually exclusive groups in argparse (GH-142333)	2025-12-06 18:03:45 +00:00
Savannah Ostrowski	5be3405e4e	GH-75949: Fix argparse dropping '|' in mutually exclusive groups on line wrap (#142312)	2025-12-06 15:12:21 +00:00
Y. Z. Chen	61823a5382	Docs: fix RFC index reference for TLS 1.3 (#142262)	2025-12-06 14:05:20 +01:00
Victor Stinner	d119443936	Remove unused imports (#142320)	2025-12-06 11:27:31 +00:00
Brett Cannon	eba449a198	GH-142234: Allow --enable-wasm-dynamic-linking under WASI (GH-142235) ... While CPython doesn't support `--enable-wasm-dynamic-linking`, external tools like componentize-py do and they have to patch around it. Since the flag is off by default, allowing the flag so external users can add/inject dynamic linking support seems acceptable.	2025-12-05 23:27:16 +00:00
Brett Cannon	d49e6f38a7	Extract data from Tools/wasm/wasi that varies between Python versions into a config file (GH-142273) ... This should allow for easier backporting of code.	2025-12-05 14:31:30 -08:00
Brett Cannon	58e1c7a16f	Introduce build-python and build-host subcommands for Tools/wasm/wasi (GH-142266) ... It should make it easier when you need to rebuild just the e.g. host Python, but it requires ./configure to run. Co-authored-by: Emma Smith <emma@emmatyping.dev>	2025-12-05 13:35:50 -08:00
Stan Ulbrych	dcac498e50	gh-142318: Fix typing 'q' at interactive help screen exiting Tachyon (#142319)	2025-12-05 19:36:28 +00:00
Serhiy Storchaka	59f247e43b	gh-115952: Fix a potential virtual memory allocation denial of service in pickle (GH-119204) ... Loading a small data which does not even involve arbitrary code execution could consume arbitrary large amount of memory. There were three issues: * PUT and LONG_BINPUT with large argument (the C implementation only). Since the memo is implemented in C as a continuous dynamic array, a single opcode can cause its resizing to arbitrary size. Now the sparsity of memo indices is limited. * BINBYTES, BINBYTES8 and BYTEARRAY8 with large argument. They allocated the bytes or bytearray object of the specified size before reading into it. Now they read very large data by chunks. * BINSTRING, BINUNICODE, LONG4, BINUNICODE8 and FRAME with large argument. They read the whole data by calling the read() method of the underlying file object, which usually allocates the bytes object of the specified size before reading into it. Now they read very large data by chunks. Also add comprehensive benchmark suite to measure performance and memory impact of chunked reading optimization in PR #119204. Features: - Normal mode: benchmarks legitimate pickles (time/memory metrics) - Antagonistic mode: tests malicious pickles (DoS protection) - Baseline comparison: side-by-side comparison of two Python builds - Support for truncated data and sparse memo attack vectors Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com> Co-authored-by: Gregory P. Smith <greg@krypto.org>	2025-12-05 19:17:01 +02:00
Savannah Ostrowski	4085ff7b32	GH-142267: Cache formatter to avoid repeated _set_color calls (#142268)	2025-12-05 16:47:50 +00:00
Savannah Ostrowski	4b14529730	GH-139862: Remove color from HelpFormatter (#142274) ... Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>	2025-12-05 16:21:31 +00:00
Serhiy Storchaka	100c726d98	Add explanation comments for tests for overlapped ZIP entries (GH-137152)	2025-12-05 18:09:20 +02:00
Serhiy Storchaka	706fdda8b3	gh-141370: Fix undefined behavior when using Py_ABS() (GH-141548) ... Co-authored-by: Sergey B Kirpichev <skirpichev@gmail.com>	2025-12-05 16:24:35 +02:00
Serhiy Storchaka	1d8f3ed2eb	gh-101100: Fix references to the set methods (GH-141857)	2025-12-05 16:22:38 +02:00
Malcolm Smith	cac4b04973	Fix disk space issues in Android CI (#142289)	2025-12-05 13:10:51 +00:00
Sanyam Khurana	4238a975d7	gh-48752: Add readline.get_pre_input_hook() function (#141586) ... Add readline.get_pre_input_hook() to retrieve the current pre-input hook. This allows applications to save and restore the hook without overwriting user settings.	2025-12-05 13:18:54 +01:00
Jelle Zijlstra	53ec7c8fc0	gh-142214: Fix two regressions in dataclasses (#142223)	2025-12-04 20:04:42 -08:00
Zanie Blue	128d31637e	gh-141926: Do not unset RUNSHARED when cross-compiling (#141958)	2025-12-05 02:15:04 +00:00
Ken Jin	b3bf212898	gh-141976: Check stack bounds in JIT optimizer (GH-142201)	2025-12-04 20:28:08 +00:00
Alper	2dac9e6016	gh-116738: Statically initialize special constants in cmath module (gh-142161) ... The initialization during `mod_exec` wasn't thread-safe with multiple interpreters.	2025-12-04 09:21:51 -05:00
Kir Chou	8392095bf9	gh-129483: Make TestLocalTimeDisambiguation's time format locale independent (#142193) ... * Change to update %c to the exact time format. --------- Co-authored-by: Kir Chou <note351@hotmail.com>	2025-12-04 08:32:23 -05:00
Mark Shannon	6825d5c11d	GH-139757: Fix reference leaks introduced in GH-140800 (GH-142257)	2025-12-04 12:27:15 +00:00
Stan Ulbrych	fb404ab575	gh-142225: Fix PyABIInfo_VAR macro (GH-142230)	2025-12-04 10:33:15 +01:00
Peter Bierma	1a7824a927	gh-141004: Add a CI job ensuring that new C APIs include documentation (GH-142102) ... Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>	2025-12-04 03:14:25 +00:00
Brett Cannon	c5252045d3	Being more flexible in when not to explicitly set the sysroot when compiling for WASI (GH-142242)	2025-12-03 15:42:10 -08:00
Sam Gross	547d8daf78	gh-142218: Fix split table dictionary crash (gh-142229) ... This fixes a regression introduced in gh-140558. The interpreter would crash if we inserted a non `str` key into a split table that matches an existing key.	2025-12-03 18:37:35 -05:00
Chris Eibl	618dc36714	GH-142050: Jit stencils on Windows contain debug data (#142052) ... Co-authored-by: Savannah Ostrowski <savannah@python.org>	2025-12-03 22:08:51 +00:00
Sam Gross	c0c65141b3	gh-140482: Avoid changing terminal settings in test_pty (gh-142202) ... The previous test_spawn_doesnt_hang test had a few problems: * It would cause ENV CHANGED failures if other tests were running concurrently due to stty changes * Typing while the test was running could cause it to fail	2025-12-03 15:48:44 -05:00
Mark Shannon	62423c9c36	GH-141794: Limit size of generated machine code. (GH-142228) ... * Factor out bodies of the largest uops, to reduce jit code size. * Factor out common assert, also reducing jit code size. * Limit size of jitted code for a single executor to 1MB.	2025-12-03 17:43:35 +00:00
Petr Viktorin	aea5531583	gh-135676: Reword the f-string (and t-string) section (GH-137469) ... Much of the information was duplicated in stdtypes.rst; this PR keeps lexical/syntactical details in Lexical Analysis and the evaluation & runtime behaviour in Standard types, with cross-references between the two. Since the t-string section only listed differences from f-strings, and the grammar for the two is equivalent, that section was moved to Standard types almost entirely. Co-authored-by: Blaise Pabon <blaise@gmail.com> Co-authored-by: Adam Turner <9087854+AA-Turner@users.noreply.github.com> Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com>	2025-12-03 16:14:53 +01:00
Uwe L. Korn	f6f456f950	gh-142038: Expand guard for types_world_is_stopped() to fix debug builds without assertions (#142039)	2025-12-03 15:24:17 +01:00
Victor Stinner	7e5fcae09b	gh-142217: Remove internal _Py_Identifier functions (#142219) ... Remove internal functions: * _PyDict_ContainsId() * _PyDict_DelItemId() * _PyDict_GetItemIdWithError() * _PyDict_SetItemId() * _PyEval_GetBuiltinId() * _PyObject_CallMethodIdNoArgs() * _PyObject_CallMethodIdObjArgs() * _PyObject_CallMethodIdOneArg() * _PyObject_VectorcallMethodId() * _PyUnicode_EqualToASCIIId() These functions were not exported and so no usable outside CPython.	2025-12-03 14:33:32 +01:00
Petr Viktorin	4172644d78	gh-142206: multiprocessing.resource_tracker: Decode messages using older protocol (GH-142215)	2025-12-03 12:59:14 +00:00
Bartosz Sławecki	88cd5d9850	gh-142170: Add pymanager link to issue template menu (#142199) ... Co-authored-by: Adam Turner <9087854+AA-Turner@users.noreply.github.com>	2025-12-03 11:11:40 +02:00
Seth Michael Larson	08d8e18ad8	gh-142145: Remove quadratic behavior in node ID cache clearing (GH-142146) ... * Remove quadratic behavior in node ID cache clearing Co-authored-by: Jacob Walls <38668450+jacobtylerwalls@users.noreply.github.com> * Add news fragment --------- Co-authored-by: Jacob Walls <38668450+jacobtylerwalls@users.noreply.github.com>	2025-12-02 23:16:37 -08:00
Pablo Galindo Salgado	8801c6dec7	gh-140677 Add heatmap visualization to Tachyon sampling profiler (#140680) ... Co-authored-by: Ivona Stojanovic <stojanovic.i@hotmail.com>	2025-12-02 20:33:40 +00:00