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patch 9.1.0784: there are several problems with python 3.13

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Problem:  there are several problems with python 3.13
Solution: fix the problems in the python3 interface (Boris Staletic)

This commit does the following things:
1) Since python 3.13.0b1, all statically defined objects are "immortal".
   Besides never getting garbage collected, this also affects reference
   counting:

   - Immportal objects have a reference count of 2^32-1.
   - Reference counting is a no-op.

   All this is considered implementation details by cpython, so
   documentation is next to non-existent.

   Relevant CPython source code:
   https://github.com/python/cpython/blob/v3.13.0/Include/object.h#L62-L107
   https://github.com/python/cpython/blob/v3.13.0/Include/object.h#L389-L391

2) Opt-out of ANSI-painted python stack traces

3) Make python error message severity more consistent

fixes: #15838
closes: #15842

Signed-off-by: Boris Staletic <boris.staletic@protonmail.com>
Signed-off-by: puremourning <puremourning@users.noreply.github.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
This commit is contained in:
Boris Staletic
2024-10-14 20:28:39 +02:00
committed by Christian Brabandt
parent 322ad0c953
commit 83a06705dc
4 changed files with 20 additions and 9 deletions
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8
src/if_py_both.h
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@@ -635,13 +635,14 @@ PythonIO_Flush(void)
if (old_fn != NULL && io_ga.ga_len > 0)
{
((char *)io_ga.ga_data)[io_ga.ga_len] = NUL;
// We don't know what emsg_severe should be here, so ... hope?
old_fn((char *)io_ga.ga_data);
}
io_ga.ga_len = 0;
}
static void
writer(writefn fn, char_u *str, PyInt n)
writer(writefn fn, char_u *str, PyInt n, int severe)
{
char_u *ptr;
@@ -665,6 +666,7 @@ writer(writefn fn, char_u *str, PyInt n)
mch_memmove(((char *)io_ga.ga_data) + io_ga.ga_len, str, (size_t)len);
((char *)io_ga.ga_data)[io_ga.ga_len + len] = NUL;
emsg_severe = severe;
fn((char *)io_ga.ga_data);
str = ptr + 1;
n -= len + 1;
@@ -692,9 +694,7 @@ write_output(OutputObject *self, PyObject *string)
Py_BEGIN_ALLOW_THREADS
Python_Lock_Vim();
if (error)
emsg_severe = TRUE;
writer((writefn)(error ? emsg : msg), (char_u *)str, len);
writer((writefn)(error ? emsg : msg), (char_u *)str, len, error);
Python_Release_Vim();
Py_END_ALLOW_THREADS
PyMem_Free(str);