gh-109889: fix compiler's redundant NOP detection to look past NOPs with no lineno when looking for the next instruction's lineno (GH-109987)
(cherry picked from commit f580edcc6a)
Co-authored-by: Irit Katriel <1055913+iritkatriel@users.noreply.github.com>
gh-109823: Adjust labels in compiler when removing an empty basic block which is a jump target (GH-109839)
(cherry picked from commit d73c12b88c)
Co-authored-by: Irit Katriel <1055913+iritkatriel@users.noreply.github.com>
gh-109195: fix source location for super load before LOAD_SUPER_ATTR (GH-109289)
(cherry picked from commit ceeb4173ae)
Co-authored-by: Carl Meyer <carl@oddbird.net>
gh-108416: Mark slow test methods with @requires_resource('cpu') (GH-108421)
Only mark tests which spend significant system or user time,
by itself or in subprocesses.
(cherry picked from commit f3ba0a74cd)
Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
gh-107901: Fix missing line number on BACKWARD_JUMP at the end of a for loop (GH-108242)
(cherry picked from commit a1cc74c4ee)
Co-authored-by: Irit Katriel <1055913+iritkatriel@users.noreply.github.com>
GH-107263: Increase C stack limit for most functions, except `_PyEval_EvalFrameDefault()` (GH-107535)
* Set C recursion limit to 1500, set cost of eval loop to 2 frames, and compiler mutliply to 2.
(cherry picked from commit fa45958450)
Co-authored-by: Mark Shannon <mark@hotpy.org>
The os module and the PyUnicode_FSDecoder() function no longer accept
bytes-like paths, like bytearray and memoryview types: only the exact
bytes type is accepted for bytes strings.
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.
* Stores all location info in linetable to conform to PEP 626.
* Remove column table from code objects.
* Remove end-line table from code objects.
* Document new location table format
* Moves the bytecode to the end of the corresponding PyCodeObject, and quickens it in-place.
* Removes the almost-always-unused co_varnames, co_freevars, and co_cellvars member caches
* _PyOpcode_Deopt is a new mapping from all opcodes to their un-quickened forms.
* _PyOpcode_InlineCacheEntries is renamed to _PyOpcode_Caches
* _Py_IncrementCountAndMaybeQuicken is renamed to _PyCode_Warmup
* _Py_Quicken is renamed to _PyCode_Quicken
* _co_quickened is renamed to _co_code_adaptive (and is now a read-only memoryview).
* Do not emit unused nonzero opargs anymore in the compiler.
