FAIL: test_generated_data (test.test_ctypes.test_generated_structs.GeneratedTest.test_generated_data) (name='Packed4')
Check that a ctypes struct/union matches its C equivalent.
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/buildbot/buildarea/3.x.ware-debian-x86.installed/build/target/lib/python3.14/test/test_ctypes/test_generated_structs.py", line 444, in test_generated_data
    self.assertEqual(sizeof(cls), next(expected))
    ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AssertionError: 12 != 16

@register()
class Packed4(Structure):
    _fields_ = [('a', c_int8), ('b', c_int64)]
    _pack_ = 8

./configure --prefix '$(PWD)/target'

CC.version: gcc (Debian 12.2.0-14) 12.2.0

sysconfig[CFLAGS]: -fno-strict-overflow -Wsign-compare -DNDEBUG -g -O3 -Wall

sysconfig[PY_CFLAGS]: -fno-strict-overflow -Wsign-compare -DNDEBUG -g -O3 -Wall

sysconfig[PY_CFLAGS_NODIST]: -std=c11 -Wextra -Wno-unused-parameter -Wno-missing-field-initializers -Wstrict-prototypes -Werror=implicit-function-declaration -fvisibility=hidden -I./Include/internal -I./Include/internal/mimalloc

sysconfig[PY_STDMODULE_CFLAGS]: -fno-strict-overflow -Wsign-compare -DNDEBUG -g -O3 -Wall -std=c11 -Wextra -Wno-unused-parameter -Wno-missing-field-initializers -Wstrict-prototypes -Werror=implicit-function-declaration -fvisibility=hidden -I./Include/internal -I./Include/internal/mimalloc -I. -I./Include