gh-109818: reprlib.recursive_repr copies __type_params__

[sobolevn]

• Issue: reprlib.recursive_repr does not copy __type_params__ #109818

[JelleZijlstra]

Thanks! I think we should backport this to 3.12 but it can wait until 3.12.1.

[miss-islington]

Thanks @sobolevn for the PR, and @JelleZijlstra for merging it 🌮🎉.. I'm working now to backport this PR to: 3.12.
🐍🍒⛏🤖

[miss-islington]

Sorry, @sobolevn and @JelleZijlstra, I could not cleanly backport this to 3.12 due to a conflict.
Please backport using cherry_picker on command line.
cherry_picker f65f9e80fe741c894582a3e413d4e3318c1ed626 3.12

[bedevere-app]

GH-109999 is a backport of this pull request to the 3.12 branch.

[bedevere-bot]

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot PPC64LE RHEL7 LTO + PGO 3.x has failed when building commit f65f9e8.

What do you need to do:

1. Don't panic.
2. Check the buildbot page in the devguide if you don't know what the buildbots are or how they work.
3. Go to the page of the buildbot that failed (https://buildbot.python.org/all/#builders/43/builds/4302) and take a look at the build logs.
4. Check if the failure is related to this commit (f65f9e8) or if it is a false positive.
5. If the failure is related to this commit, please, reflect that on the issue and make a new Pull Request with a fix.

You can take a look at the buildbot page here:

https://buildbot.python.org/all/#builders/43/builds/4302

Failed tests:

• test.test_multiprocessing_fork.test_processes

Summary of the results of the build (if available):

==

Click to see traceback logs

remote: Enumerating objects: 20, done.        
remote: Counting objects:   5% (1/20)        
remote: Counting objects:  10% (2/20)        
remote: Counting objects:  15% (3/20)        
remote: Counting objects:  20% (4/20)        
remote: Counting objects:  25% (5/20)        
remote: Counting objects:  30% (6/20)        
remote: Counting objects:  35% (7/20)        
remote: Counting objects:  40% (8/20)        
remote: Counting objects:  45% (9/20)        
remote: Counting objects:  50% (10/20)        
remote: Counting objects:  55% (11/20)        
remote: Counting objects:  60% (12/20)        
remote: Counting objects:  65% (13/20)        
remote: Counting objects:  70% (14/20)        
remote: Counting objects:  75% (15/20)        
remote: Counting objects:  80% (16/20)        
remote: Counting objects:  85% (17/20)        
remote: Counting objects:  90% (18/20)        
remote: Counting objects:  95% (19/20)        
remote: Counting objects: 100% (20/20)        
remote: Counting objects: 100% (20/20), done.        
remote: Compressing objects:  11% (1/9)        
remote: Compressing objects:  22% (2/9)        
remote: Compressing objects:  33% (3/9)        
remote: Compressing objects:  44% (4/9)        
remote: Compressing objects:  55% (5/9)        
remote: Compressing objects:  66% (6/9)        
remote: Compressing objects:  77% (7/9)        
remote: Compressing objects:  88% (8/9)        
remote: Compressing objects: 100% (9/9)        
remote: Compressing objects: 100% (9/9), done.        
remote: Total 11 (delta 9), reused 3 (delta 2), pack-reused 0        
From https://github.com/python/cpython
 * branch            main       -> FETCH_HEAD
Note: checking out 'f65f9e80fe741c894582a3e413d4e3318c1ed626'.

You are in 'detached HEAD' state. You can look around, make experimental
changes and commit them, and you can discard any commits you make in this
state without impacting any branches by performing another checkout.

If you want to create a new branch to retain commits you create, you may
do so (now or later) by using -b with the checkout command again. Example:

  git checkout -b new_branch_name

HEAD is now at f65f9e8... gh-109818: `reprlib.recursive_repr` copies `__type_params__` (#109819)
Switched to and reset branch 'main'

find: ‘build’: No such file or directory
find: ‘build’: No such file or directory
find: ‘build’: No such file or directory
find: ‘build’: No such file or directory
make[2]: [Makefile:2813: clean-retain-profile] Error 1 (ignored)
In file included from Python/ceval.c:766:
Python/generated_cases.c.h: In function ‘_PyEval_EvalFrameDefault’:
Python/generated_cases.c.h:2634:31: warning: unused variable ‘tp’ [-Wunused-variable]
                 PyTypeObject *tp = Py_TYPE(owner);
                               ^~
Python/generated_cases.c.h:3593:31: warning: unused variable ‘owner_cls’ [-Wunused-variable]
                 PyTypeObject *owner_cls = Py_TYPE(owner);
                               ^~~~~~~~~
Python/generated_cases.c.h:3642:31: warning: unused variable ‘owner_cls’ [-Wunused-variable]
                 PyTypeObject *owner_cls = Py_TYPE(owner);
                               ^~~~~~~~~
In file included from Python/executor.c:87:
Python/executor_cases.c.h: In function ‘_PyUopExecute’:
Python/executor_cases.c.h:1739:27: warning: unused variable ‘tp’ [-Wunused-variable]
             PyTypeObject *tp = Py_TYPE(owner);
                           ^~
Python/executor_cases.c.h:2302:27: warning: unused variable ‘owner_cls’ [-Wunused-variable]
             PyTypeObject *owner_cls = Py_TYPE(owner);
                           ^~~~~~~~~
Python/executor_cases.c.h:2348:27: warning: unused variable ‘owner_cls’ [-Wunused-variable]
             PyTypeObject *owner_cls = Py_TYPE(owner);
                           ^~~~~~~~~
./Modules/_testcapi/unicode.c: In function ‘test_string_from_format’:
./Modules/_testcapi/unicode.c:1538:1: note: variable tracking size limit exceeded with -fvar-tracking-assignments, retrying without
 test_string_from_format(PyObject *self, PyObject *Py_UNUSED(ignored))
 ^~~~~~~~~~~~~~~~~~~~~~~
./Modules/_testcapi/unicode.c: In function ‘test_string_from_format’:
./Modules/_testcapi/unicode.c:1538:1: note: variable tracking size limit exceeded with -fvar-tracking-assignments, retrying without
 test_string_from_format(PyObject *self, PyObject *Py_UNUSED(ignored))
 ^
./Include/internal/pycore_semaphore.h:57:18: warning: type of ‘_PySemaphore_Init’ does not match original declaration [-Wlto-type-mismatch]
 PyAPI_FUNC(void) _PySemaphore_Init(_PySemaphore *sema);
                  ^
Python/parking_lot.c:53:1: note: ‘_PySemaphore_Init’ was previously declared here
 _PySemaphore_Init(_PySemaphore *sema)
 ^
Python/parking_lot.c:53:1: note: code may be misoptimized unless -fno-strict-aliasing is used
./Include/internal/pycore_semaphore.h:49:1: warning: type of ‘_PySemaphore_Wait’ does not match original declaration [-Wlto-type-mismatch]
 _PySemaphore_Wait(_PySemaphore *sema, _PyTime_t timeout_ns, int detach);
 ^
Python/parking_lot.c:178:1: note: ‘_PySemaphore_Wait’ was previously declared here
 _PySemaphore_Wait(_PySemaphore *sema, _PyTime_t timeout, int detach)
 ^
Python/parking_lot.c:178:1: note: code may be misoptimized unless -fno-strict-aliasing is used
./Include/internal/pycore_semaphore.h:58:18: warning: type of ‘_PySemaphore_Destroy’ does not match original declaration [-Wlto-type-mismatch]
 PyAPI_FUNC(void) _PySemaphore_Destroy(_PySemaphore *sema);
                  ^
Python/parking_lot.c:81:1: note: ‘_PySemaphore_Destroy’ was previously declared here
 _PySemaphore_Destroy(_PySemaphore *sema)
 ^
Python/parking_lot.c:81:1: note: code may be misoptimized unless -fno-strict-aliasing is used
./Include/internal/pycore_semaphore.h:54:1: warning: type of ‘_PySemaphore_Wakeup’ does not match original declaration [-Wlto-type-mismatch]
 _PySemaphore_Wakeup(_PySemaphore *sema);
 ^
Python/parking_lot.c:197:1: note: ‘_PySemaphore_Wakeup’ was previously declared here
 _PySemaphore_Wakeup(_PySemaphore *sema)
 ^
Python/parking_lot.c:197:1: note: code may be misoptimized unless -fno-strict-aliasing is used
./Modules/_decimal/libmpdec/context.c:57: warning: mpd_setminalloc: ignoring request to set MPD_MINALLOC a second time

./Modules/_decimal/libmpdec/context.c:57: warning: mpd_setminalloc: ignoring request to set MPD_MINALLOC a second time

In file included from Python/ceval.c:766:
Python/generated_cases.c.h: In function ‘_PyEval_EvalFrameDefault’:
Python/generated_cases.c.h:2634:31: warning: unused variable ‘tp’ [-Wunused-variable]
                 PyTypeObject *tp = Py_TYPE(owner);
                               ^~
Python/generated_cases.c.h:3593:31: warning: unused variable ‘owner_cls’ [-Wunused-variable]
                 PyTypeObject *owner_cls = Py_TYPE(owner);
                               ^~~~~~~~~
Python/generated_cases.c.h:3642:31: warning: unused variable ‘owner_cls’ [-Wunused-variable]
                 PyTypeObject *owner_cls = Py_TYPE(owner);
                               ^~~~~~~~~
In file included from Python/executor.c:87:
Python/executor_cases.c.h: In function ‘_PyUopExecute’:
Python/executor_cases.c.h:1739:27: warning: unused variable ‘tp’ [-Wunused-variable]
             PyTypeObject *tp = Py_TYPE(owner);
                           ^~
Python/executor_cases.c.h:2302:27: warning: unused variable ‘owner_cls’ [-Wunused-variable]
             PyTypeObject *owner_cls = Py_TYPE(owner);
                           ^~~~~~~~~
Python/executor_cases.c.h:2348:27: warning: unused variable ‘owner_cls’ [-Wunused-variable]
             PyTypeObject *owner_cls = Py_TYPE(owner);
                           ^~~~~~~~~
./Include/internal/pycore_semaphore.h:54:1: warning: type of ‘_PySemaphore_Wakeup’ does not match original declaration [-Wlto-type-mismatch]
 _PySemaphore_Wakeup(_PySemaphore *sema);
 ^
Python/parking_lot.c:197:1: note: ‘_PySemaphore_Wakeup’ was previously declared here
 _PySemaphore_Wakeup(_PySemaphore *sema)
 ^
Python/parking_lot.c:197:1: note: code may be misoptimized unless -fno-strict-aliasing is used
./Include/internal/pycore_semaphore.h:57:18: warning: type of ‘_PySemaphore_Init’ does not match original declaration [-Wlto-type-mismatch]
 PyAPI_FUNC(void) _PySemaphore_Init(_PySemaphore *sema);
                  ^
Python/parking_lot.c:53:1: note: ‘_PySemaphore_Init’ was previously declared here
 _PySemaphore_Init(_PySemaphore *sema)
 ^
Python/parking_lot.c:53:1: note: code may be misoptimized unless -fno-strict-aliasing is used
./Include/internal/pycore_semaphore.h:49:1: warning: type of ‘_PySemaphore_Wait’ does not match original declaration [-Wlto-type-mismatch]
 _PySemaphore_Wait(_PySemaphore *sema, _PyTime_t timeout_ns, int detach);
 ^
Python/parking_lot.c:178:1: note: ‘_PySemaphore_Wait’ was previously declared here
 _PySemaphore_Wait(_PySemaphore *sema, _PyTime_t timeout, int detach)
 ^
Python/parking_lot.c:178:1: note: code may be misoptimized unless -fno-strict-aliasing is used
./Include/internal/pycore_semaphore.h:58:18: warning: type of ‘_PySemaphore_Destroy’ does not match original declaration [-Wlto-type-mismatch]
 PyAPI_FUNC(void) _PySemaphore_Destroy(_PySemaphore *sema);
                  ^
Python/parking_lot.c:81:1: note: ‘_PySemaphore_Destroy’ was previously declared here
 _PySemaphore_Destroy(_PySemaphore *sema)
 ^
Python/parking_lot.c:81:1: note: code may be misoptimized unless -fno-strict-aliasing is used

make: *** [Makefile:2032: buildbottest] Error 5