Move signals_pending from _PyRuntime.ceval to PyInterpreterState.ceval.

Move gil_drop_request member from _PyRuntimeState.ceval to PyInterpreterState.ceval.

…-19926) Add --with-experimental-isolated-subinterpreters build option to configure: better isolate subinterpreters, experimental build mode. When used, force the usage of the libc malloc() memory allocator, since pymalloc relies on the unique global interpreter lock (GIL).

`sally` is not a Simpsons character Automerge-Triggered-By: @gvanrossum

Move recursion_limit member from _PyRuntimeState.ceval to PyInterpreterState.ceval. * Py_SetRecursionLimit() now only sets _Py_CheckRecursionLimit of ceval.c if the current Python thread is part of the main interpreter. * Inline _Py_MakeEndRecCheck() into _Py_LeaveRecursiveCall(). * Convert _Py_RecursionLimitLowerWaterMark() macro into a static inline function.

_PyErr_ChainExceptions() now ensures that the first parameter is an exception type, as done by _PyErr_SetObject(). * The following function now check PyExceptionInstance_Check() in an assertion using a new _PyBaseExceptionObject_cast() helper function: * PyException_GetTraceback(), PyException_SetTraceback() * PyException_GetCause(), PyException_SetCause() * PyException_GetContext(), PyException_SetContext() * PyExceptionClass_Name() now checks PyExceptionClass_Check() with an assertion. * Remove XXX comment and add gi_exc_state variable to _gen_throw(). * Remove comment from test_generators

Automerge-Triggered-By: @corona10

…ythonGH-19932) This reverts commit 4e01946.

…GH-19933) When Python is built in the experimental isolated subinterpreters mode, disable Unicode singletons and Unicode interned strings since they are shared by all interpreters. Temporary workaround until these caches are made per-interpreter.

… Windows (pythonGH-19845)

When Python is built with experimental isolated interpreters, disable tuple, dict and free free lists. Temporary workaround until these caches are made per-interpreter. Add frame_alloc() and frame_get_builtins() subfunctions to simplify _PyFrame_New_NoTrack().

In the experimental isolated subinterpreters build mode, _PyThreadState_GET() gets the autoTSSkey variable and _PyThreadState_Swap() sets the autoTSSkey variable. * Add _PyThreadState_GetTSS() * _PyRuntimeState_GetThreadState() and _PyThreadState_GET() return _PyThreadState_GetTSS() * PyEval_SaveThread() sets the autoTSSkey variable to current Python thread state rather than NULL. * eval_frame_handle_pending() doesn't check that _PyThreadState_Swap() result is NULL. * _PyThreadState_Swap() gets the current Python thread state with _PyThreadState_GetTSS() rather than _PyRuntimeGILState_GetThreadState(). * PyGILState_Ensure() no longer checks _PyEval_ThreadsInitialized() since it cannot access the current interpreter.

Fix also code to handle init_interp_main() failure.

In the experimental isolated subinterpreters build mode, the GIL is now per-interpreter. Move gil from _PyRuntimeState.ceval to PyInterpreterState.ceval. new_interpreter() always get the config from the main interpreter.

…-19944) In the experimental isolated subinterpreters build mode, _xxsubinterpreters.run_string() now releases the GIL.

…Dict nodes (pythonGH-19868) Co-authored-by: Pablo Galindo <Pablogsal@gmail.com>

…xy objects (pythonGH-19946)

bpo-40480: create different regexps in the presence of multiple `*` patterns to prevent fnmatch() from taking exponential time.

…thon#19928)" (python#19950) This reverts commit d60040b.

…ode for the AST (pythonGH-19952)

When Python is built with experimental isolated interpreters, disable the type method cache. Temporary workaround until the cache is made per-interpreter.

When Python is built with experimental isolated interpreters, a garbage collection now does nothing in an isolated interpreter. Temporary workaround until subinterpreters stop sharing Python objects.

When Python is built with experimental isolated interpreters, disable the list free list. Temporary workaround until this cache is made per-interpreter.

…nGH-19963)

*first* is repeated twice.

…thonGH-19964)

pythonGH-20097) Signed-off-by: Filipe Laíns <lains@archlinux.org>

…GH-20072) This fixes both the traceback.py module and the C code for formatting syntax errors (in Python/pythonrun.c). They now both consistently do the following: - Suppress caret if it points left of text - Allow caret pointing just past end of line - If caret points past end of line, clip to *just* past end of line The syntax error formatting code in traceback.py was mostly rewritten; small, subtle changes were applied to the C code in pythonrun.c. There's still a difference when the text contains embedded newlines. Neither handles these very well, and I don't think the case occurs in practice. Automerge-Triggered-By: @gvanrossum

Change spelling of a #define in _tkinter.c from HAVE_LIBTOMMAMTH to HAVE_LIBTOMMATH, since this is used to keep track of tclTomMath.h, not tclTomMamth.h. No other file seems to refer to this variable.

…-20095) distutils.tests now saves/restores warnings filters to leave them unchanged. Importing tests imports docutils which imports pkg_resources which adds a warnings filter.

OpenSSL 3.0.0-alpha2 was released today. The FIPS_mode() function has been deprecated and removed. It no longer makes sense with the new provider and context system in OpenSSL 3.0.0. EVP_default_properties_is_fips_enabled() is good enough for our needs in unit tests. It's an internal API, too. Signed-off-by: Christian Heimes <christian@python.org>

* 1.0.2u (EOL) * 1.1.0l (EOL) * 1.1.1g * 3.0.0-alpha2 (disabled for now) Build the FIPS provider and create a FIPS configuration file for OpenSSL 3.0.0. Signed-off-by: Christian Heimes <christian@python.org> Automerge-Triggered-By: @tiran

…/python/cpython into revert-19108-remove-cElementTree