Move signals_pending from _PyRuntime.ceval toPyInterpreterState.ceval.

Move gil_drop_request member from _PyRuntimeState.ceval toPyInterpreterState.ceval.

…-19926)Add --with-experimental-isolated-subinterpreters build option toconfigure: 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 characterAutomerge-Triggered-By:@gvanrossum

Move recursion_limit member from _PyRuntimeState.ceval toPyInterpreterState.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 anexception 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 commit4e01946.

…GH-19933)When Python is built in the experimental isolated subinterpretersmode, disable Unicode singletons and Unicode interned strings sincethey 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, disabletuple, 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 isnow 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 commitd60040b.

…ode for the AST (pythonGH-19952)

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

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

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

…nGH-19963)

*first* is repeated twice.

…thonGH-19964)

…thonGH-20076)Co-authored-by: Lysandros Nikolaou <lisandrosnik@gmail.com>

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 lineThe 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 themunchanged. Importing tests imports docutils which importspkg_resources which adds a warnings filter.

OpenSSL 3.0.0-alpha2 was released today. The FIPS_mode() function hasbeen deprecated and removed. It no longer makes sense with the newprovider and context system in OpenSSL 3.0.0.EVP_default_properties_is_fips_enabled() is good enough for our needs inunit 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 OpenSSL3.0.0.Signed-off-by: Christian Heimes <christian@python.org>Automerge-Triggered-By:@tiran

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