`ARM Raspbian Linux Asan 3.x` buildbot failure: "warning: array subscript 0 is outside array bounds"

Crash report

Reported in https://github.com/python/cpython/pull/137281#issuecomment-3148282100
Link: https://buildbot.python.org/#/builders/1811/builds/69

Log:

HEAD is now at 158b28dd190 gh-137191: Fix how type parameters are collected from `Protocol` and `Generic` bases with parameters (#137281)
Switched to and reset branch 'main'

configure: WARNING: no system libmpdec found; falling back to pure-Python version for the decimal module

In file included from ./Include/internal/pycore_dict.h:11,
                 from Objects/typeobject.c:7:
In function ‘Py_DECREF_MORTAL’,
    inlined from ‘PyStackRef_XCLOSE’ at ./Include/internal/pycore_stackref.h:730:9,
    inlined from ‘_PyThreadState_PopCStackRef’ at ./Include/internal/pycore_stackref.h:810:5,
    inlined from ‘vectorcall_maybe’ at Objects/typeobject.c:3107:9:
./Include/internal/pycore_object.h:481:8: warning: array subscript 0 is outside array bounds of ‘PyObject[0]’ {aka ‘struct _object[]’} [-Warray-bounds]
  481 |     if (--op->ob_refcnt == 0) {
      |        ^

Timeout (0:05:00)!
Thread 0x0000007f7ceef100 [Thread-2] (most recent call first):
  File "/home/buildbot/buildarea/3.x.pablogsal-rasp.asan/build/Lib/subprocess.py", line 2044 in _wait
  File "/home/buildbot/buildarea/3.x.pablogsal-rasp.asan/build/Lib/subprocess.py", line 1277 in wait
  File "/home/buildbot/buildarea/3.x.pablogsal-rasp.asan/build/Lib/test/libregrtest/run_workers.py", line 194 in _run_process
  File "/home/buildbot/buildarea/3.x.pablogsal-rasp.asan/build/Lib/test/libregrtest/run_workers.py", line 299 in run_tmp_files
  File "/home/buildbot/buildarea/3.x.pablogsal-rasp.asan/build/Lib/test/libregrtest/run_workers.py", line 363 in _runtest
  File "/home/buildbot/buildarea/3.x.pablogsal-rasp.asan/build/Lib/test/libregrtest/run_workers.py", line 403 in run
  File "/home/buildbot/buildarea/3.x.pablogsal-rasp.asan/build/Lib/threading.py", line 1074 in _bootstrap_inner
  File "/home/buildbot/buildarea/3.x.pablogsal-rasp.asan/build/Lib/threading.py", line 1036 in _bootstrap

Thread 0x0000007f7d6ff100 [Thread-1] (most recent call first):
  File "/home/buildbot/buildarea/3.x.pablogsal-rasp.asan/build/Lib/subprocess.py", line 2057 in _wait
  File "/home/buildbot/buildarea/3.x.pablogsal-rasp.asan/build/Lib/subprocess.py", line 1277 in wait
  File "/home/buildbot/buildarea/3.x.pablogsal-rasp.asan/build/Lib/test/libregrtest/run_workers.py", line 194 in _run_process
  File "/home/buildbot/buildarea/3.x.pablogsal-rasp.asan/build/Lib/test/libregrtest/run_workers.py", line 299 in run_tmp_files
  File "/home/buildbot/buildarea/3.x.pablogsal-rasp.asan/build/Lib/test/libregrtest/run_workers.py", line 363 in _runtest
  File "/home/buildbot/buildarea/3.x.pablogsal-rasp.asan/build/Lib/test/libregrtest/run_workers.py", line 403 in run
  File "/home/buildbot/buildarea/3.x.pablogsal-rasp.asan/build/Lib/threading.py", line 1074 in _bootstrap_inner
  File "/home/buildbot/buildarea/3.x.pablogsal-rasp.asan/build/Lib/threading.py", line 1036 in _bootstrap

Thread 0x0000007f893fa6c0 [python] (most recent call first):
  File "/home/buildbot/buildarea/3.x.pablogsal-rasp.asan/build/Lib/test/libregrtest/utils.py", line 82 in format_duration
  File "/home/buildbot/buildarea/3.x.pablogsal-rasp.asan/build/Lib/test/libregrtest/run_workers.py", line 464 in get_running
  File "/home/buildbot/buildarea/3.x.pablogsal-rasp.asan/build/Lib/test/libregrtest/run_workers.py", line 551 in _get_result
  File "/home/buildbot/buildarea/3.x.pablogsal-rasp.asan/build/Lib/test/libregrtest/run_workers.py", line 610 in run
  File "/home/buildbot/buildarea/3.x.pablogsal-rasp.asan/build/Lib/test/libregrtest/main.py", line 455 in _run_tests_mp
  File "/home/buildbot/buildarea/3.x.pablogsal-rasp.asan/build/Lib/test/libregrtest/main.py", line 561 in _run_tests
  File "/home/buildbot/buildarea/3.x.pablogsal-rasp.asan/build/Lib/test/libregrtest/main.py", line 598 in run_tests
  File "/home/buildbot/buildarea/3.x.pablogsal-rasp.asan/build/Lib/test/libregrtest/main.py", line 767 in main
  File "/home/buildbot/buildarea/3.x.pablogsal-rasp.asan/build/Lib/test/libregrtest/main.py", line 775 in main
  File "/home/buildbot/buildarea/3.x.pablogsal-rasp.asan/build/Lib/test/__main__.py", line 2 in <module>
  File "<frozen runpy>", line 88 in _run_code
  File "<frozen runpy>", line 198 in _run_module_as_main
make: *** [Makefile:2494: buildbottest] Error 1

Bắt đầu với nhật ký buildbot cho builder 1811, sau đó kiểm tra Objects/typeobject.c và các header được tham chiếu là pycore_object.h và pycore_stackref.h xung quanh vectorcall_maybe. Tái hiện bản build ARM Raspbian Linux ASAN và điều tra cảnh báo về giới hạn mảng cùng timeout kiểm thử năm phút. Được xem là hoàn tất khi buildbot hoàn thành mà không có cảnh báo hoặc timeout này.