* gh-109118: Fix runtime crash when NameError happens in PEP 695 function (#109123)
(cherry picked from commit 17f994174d)
* [3.12] gh-109118: Fix runtime crash when NameError happens in PEP 695 function (GH-109123).
(cherry picked from commit 17f994174d)
Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com>
* Remove assert that should've been DEOPT_IF
The assert(method != NULL) in CALL_NO_KW_LIST_APPEND is wrong --
this condition should lead to a deoptimization, and indeed there
is a DEOPT_IF two lines later that will trigger if method == NULL.
This would crash in a devious repro scenario (first seen live
in boto3 tests) when compiled with assertions enabled.
In a production version there is no crash, so impact is limited.
(The crash also appears in main; I will prepare a separate PR.)
* Add back a different assert(self != NULL)
* 📜🤖 Added by blurb_it.
---------
Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@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>
This implements PEP 695, Type Parameter Syntax. It adds support for:
- Generic functions (def func[T](): ...)
- Generic classes (class X[T](): ...)
- Type aliases (type X = ...)
- New scoping when the new syntax is used within a class body
- Compiler and interpreter changes to support the new syntax and scoping rules
Co-authored-by: Marc Mueller <30130371+cdce8p@users.noreply.github.com>
Co-authored-by: Eric Traut <eric@traut.com>
Co-authored-by: Larry Hastings <larry@hastings.org>
Co-authored-by: Alex Waygood <Alex.Waygood@Gmail.com>
When monitoring LINE events, instrument all instructions that can have a predecessor on a different line.
Then check that the a new line has been hit in the instrumentation code.
This brings the behavior closer to that of 3.11, simplifying implementation and porting of tools.
This speeds up `super()` (by around 85%, for a simple one-level
`super().meth()` microbenchmark) by avoiding allocation of a new
single-use `super()` object on each use.
* The majority of the monitoring code is in instrumentation.c
* The new instrumentation bytecodes are in bytecodes.c
* legacy_tracing.c adapts the new API to the old sys.setrace and sys.setprofile APIs
* Eliminate all remaining uses of Py_SIZE and Py_SET_SIZE on PyLongObject, adding asserts.
* Change layout of size/sign bits in longobject to support future addition of immortal ints and tagged medium ints.
* Add functions to hide some internals of long object, and for setting sign and digit count.
* Replace uses of IS_MEDIUM_VALUE macro with _PyLong_IsCompact().
* Rename local variables, names and consts, from the interpeter loop. Will allow non-code objects in frames for better introspection of C builtins and extensions.
* Remove unused dummy variables.
* Make sure that the current exception is always normalized.
* Remove redundant type and traceback fields for the current exception.
* Add new API functions: PyErr_GetRaisedException, PyErr_SetRaisedException
* Add new API functions: PyException_GetArgs, PyException_SetArgs
