import_testcapi,csv,io# Persistent failure ensures the allocation inside _set_str failsforninrange(1,30):print(n)_testcapi.set_nomemory(n,0)try:w=csv.writer(io.StringIO())w.writerow(["a","b"])_testcapi.remove_mem_hooks()breakexceptMemoryError:_testcapi.remove_mem_hooks()

Program received signal SIGSEGV, Segmentation fault.dialect_check_char (name=0x7ffff7fa39e5 "delimiter", c=44, dialect=dialect@entry=0x7ffff74dadb0, allowspace=true) at ./Modules/_csv.c:353353             PyUnicode_GET_LENGTH(dialect->lineterminator), 1) >= 0)#0  dialect_check_char (name=0x7ffff7fa39e5 "delimiter", c=44, dialect=dialect@entry=0x7ffff74dadb0, allowspace=true) at ./Modules/_csv.c:353#1  0x00007ffff7f9ee52 in dialect_new (type=0x555555f539b0, args=0x555555d62c40 <_PyRuntime+135440>, kwargs=0x0) at ./Modules/_csv.c:543#2  0x000055555576bd44 in type_call (self=0x555555f539b0, args=<optimized out>, kwds=<optimized out>) at Objects/typeobject.c:2441#3  0x00005555556a34b4 in _PyObject_MakeTpCall (tstate=0x555555d99c08 <_PyRuntime+360664>, callable=0x555555f539b0, args=0x0, nargs=0, keywords=0x0) at Objects/call.c:242#4  0x00007ffff7fa19d3 in _call_dialect (module_state=0x7ffff72d4cc0, dialect_inst=0x0, kwargs=0x0) at ./Modules/_csv.c:646#5  csv_writer (module=0x7ffff72b47a0, args=0x7ffff7477cf0, keyword_args=0x0) at ./Modules/_csv.c:1581#6  0x00005555557210e2 in cfunction_call (func=0x7ffff72cf170, args=0x7ffff7477cf0, kwargs=0x0) at Objects/methodobject.c:564#7  0x00005555556a34b4 in _PyObject_MakeTpCall (tstate=0x555555d99c08 <_PyRuntime+360664>, callable=0x7ffff72cf170, args=0x7fffffffb628, nargs=1, keywords=0x0) at Objects/call.c:242#8  0x000055555583f29d in _Py_VectorCall_StackRefSteal (callable=callable@entry=..., arguments=0x7ffff7fa7090, total_args=total_args@entry=1, kwnames=kwnames@entry=...) at Python/ceval.c:733#9  0x00005555558556d6 in _PyEval_EvalFrameDefault (tstate=tstate@entry=0x555555d99c08 <_PyRuntime+360664>, frame=<optimized out>, frame@entry=0x7ffff7fa7020, throwflag=throwflag@entry=0)    at Python/generated_cases.c.h:4170#10 0x000055555583f08b in _PyEval_EvalFrame (tstate=0x555555d99c08 <_PyRuntime+360664>, frame=0x7ffff7fa7020, throwflag=0) at ./Include/internal/pycore_ceval.h:118#11 _PyEval_Vector (tstate=tstate@entry=0x555555d99c08 <_PyRuntime+360664>, func=func@entry=0x7ffff7466690, locals=locals@entry=0x7ffff746a4b0, args=args@entry=0x0,    argcount=argcount@entry=0, kwnames=kwnames@entry=0x0) at Python/ceval.c:2130#12 0x000055555583ee1e in PyEval_EvalCode (co=co@entry=0x555555f396d0, globals=globals@entry=0x7ffff746a4b0, locals=locals@entry=0x7ffff746a4b0) at Python/ceval.c:686#13 0x00005555559c8f8e in run_eval_code_obj (tstate=0x555555d99c08 <_PyRuntime+360664>, co=co@entry=0x555555f396d0, globals=globals@entry=0x7ffff746a4b0, locals=locals@entry=0x7ffff746a4b0)    at Python/pythonrun.c:1368#14 0x00005555559c8adb in run_mod (mod=mod@entry=0x555555f40fa0, filename=filename@entry=0x7ffff74e8580, globals=globals@entry=0x7ffff746a4b0, locals=locals@entry=0x7ffff746a4b0,    flags=0x7fffffffc950, arena=arena@entry=0x7ffff74dad40, interactive_src=0x0, generate_new_source=0) at Python/pythonrun.c:1471