memory leak in email message make mixed with long boundary #139827
Description
Bug report
Bug description:
from email.message import MIMEPart
part = MIMEPart()
boundary = 'a'*5000
part.make_mixed(boundary)
print(part)config: JIT + ASan
=================================================================
==799314==ERROR: LeakSanitizer: detected memory leaks
Direct leak of 2008 byte(s) in 1 object(s) allocated from:
#0 0x79df4acac9c7 in malloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:69
#1 0x55ec64b4a6b7 in _PyObject_MallocWithType ../Include/internal/pycore_object_alloc.h:46
#2 0x55ec64b4a6b7 in gc_alloc ../Python/gc.c:2327
#3 0x55ec64b4a6b7 in _PyObject_GC_NewVar ../Python/gc.c:2369
#4 0x55ec64c28e54 in make_executor_from_uops ../Python/optimizer.c:1120
#5 0x55ec64c28e54 in uop_optimize ../Python/optimizer.c:1341
#6 0x55ec64c28e54 in _PyOptimizer_Optimize ../Python/optimizer.c:136
#7 0x55ec645f2940 in _PyEval_EvalFrameDefault ../Python/generated_cases.c.h:7656
#8 0x55ec64ab4e55 in _PyEval_EvalFrame ../Include/internal/pycore_ceval.h:121
#9 0x55ec64ab4e55 in _PyEval_Vector ../Python/ceval.c:1997
#10 0x55ec64742fa3 in _PyObject_VectorcallDictTstate ../Objects/call.c:135
#11 0x55ec6474365c in _PyObject_Call_Prepend ../Objects/call.c:504
#12 0x55ec648cc280 in slot_tp_new ../Objects/typeobject.c:10853
#13 0x55ec648dc148 in type_call ../Objects/typeobject.c:2448
#14 0x55ec6473de4d in _PyObject_MakeTpCall ../Objects/call.c:242
#15 0x55ec645e272c in _PyEval_EvalFrameDefault ../Python/generated_cases.c.h:4021
#16 0x55ec64ab4e55 in _PyEval_EvalFrame ../Include/internal/pycore_ceval.h:121
#17 0x55ec64ab4e55 in _PyEval_Vector ../Python/ceval.c:1997
#18 0x55ec64742fa3 in _PyObject_VectorcallDictTstate ../Objects/call.c:135
#19 0x55ec6474365c in _PyObject_Call_Prepend ../Objects/call.c:504
#20 0x55ec648fa114 in call_method ../Objects/typeobject.c:3076
#21 0x55ec648fa114 in slot_tp_call ../Objects/typeobject.c:10599
#22 0x55ec6473de4d in _PyObject_MakeTpCall ../Objects/call.c:242
#23 0x55ec645e272c in _PyEval_EvalFrameDefault ../Python/generated_cases.c.h:4021
#24 0x55ec64ab4e55 in _PyEval_EvalFrame ../Include/internal/pycore_ceval.h:121
#25 0x55ec64ab4e55 in _PyEval_Vector ../Python/ceval.c:1997
#26 0x55ec648fe657 in _PyObject_VectorcallTstate ../Include/internal/pycore_call.h:169
#27 0x55ec648fe657 in vectorcall_unbound ../Objects/typeobject.c:3033
#28 0x55ec648fe657 in vectorcall_method ../Objects/typeobject.c:3104
#29 0x55ec648fe657 in slot_mp_ass_subscript ../Objects/typeobject.c:10386
#30 0x55ec645fcae8 in _PyEval_EvalFrameDefault ../Python/generated_cases.c.h:11245
#31 0x55ec64ab4686 in _PyEval_EvalFrame ../Include/internal/pycore_ceval.h:121
#32 0x55ec64ab4686 in _PyEval_Vector ../Python/ceval.c:1997
#33 0x55ec64ab4686 in PyEval_EvalCode ../Python/ceval.c:880
#34 0x55ec64c71b0e in run_eval_code_obj ../Python/pythonrun.c:1365
#35 0x55ec64c71b0e in run_mod ../Python/pythonrun.c:1459
#36 0x55ec64c767b7 in pyrun_file ../Python/pythonrun.c:1293
#37 0x55ec64c767b7 in _PyRun_SimpleFileObject ../Python/pythonrun.c:521
#38 0x55ec64c772dc in _PyRun_AnyFileObject ../Python/pythonrun.c:81
#39 0x55ec64cf3bdc in pymain_run_file_obj ../Modules/main.c:410
#40 0x55ec64cf3bdc in pymain_run_file ../Modules/main.c:429
#41 0x55ec64cf3bdc in pymain_run_python ../Modules/main.c:691
#42 0x55ec64cf54be in Py_RunMain ../Modules/main.c:772
#43 0x55ec64cf54be in pymain_main ../Modules/main.c:802
#44 0x55ec64cf54be in Py_BytesMain ../Modules/main.c:826
#45 0x79df4a8de1c9 in __libc_start_call_main ../sysdeps/nptl/libc_start_call_main.h:58
#46 0x79df4a8de28a in __libc_start_main_impl ../csu/libc-start.c:360
#47 0x55ec64617f54 in _start (/home/fuzz/WorkSpace/flowfusion-cpython/cpython/build/python+0x218f54) (BuildId: 3087b1f6c97d85c049f8eaa36e3ac5b15eccf317)
SUMMARY: AddressSanitizer: 2008 byte(s) leaked in 1 allocation(s).
CPython versions tested on:
CPython main branch
Operating systems tested on:
Linux