importjsondefbad_encoder1(*args):returnNoneenc=json.encoder.c_make_encoder(None,lambdaobj:str(obj),bad_encoder1,r'\udcff',': ',r'\udfff',False,-(2**64),False)enc({'spam':10**1000},4)

===================================================================3279101==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x502000004bb0 at pc 0x7079e3b05e0e bp 0x7ffc65d9ea20 sp 0x7ffc65d9ea10READ of size 8 at 0x502000004bb0 thread T0    #0 0x7079e3b05e0d in update_indent_cache ../Modules/_json.c:1411    #1 0x7079e3b05e0d in get_item_separator ../Modules/_json.c:1440    #2 0x7079e3b1118e in encoder_listencode_dict ../Modules/_json.c:1855    #3 0x7079e3b1118e in encoder_listencode_obj ../Modules/_json.c:1624    #4 0x7079e3b121b4 in encoder_call ../Modules/_json.c:1483    #5 0x5ebc8e985c5d in _PyObject_MakeTpCall ../Objects/call.c:242    #6 0x5ebc8e828ad2 in _PyEval_EvalFrameDefault ../Python/generated_cases.c.h:1620    #7 0x5ebc8ed07fb6 in _PyEval_EvalFrame ../Include/internal/pycore_ceval.h:121    #8 0x5ebc8ed07fb6 in _PyEval_Vector ../Python/ceval.c:2005    #9 0x5ebc8ed07fb6 in PyEval_EvalCode ../Python/ceval.c:888    #10 0x5ebc8eec63fe in run_eval_code_obj ../Python/pythonrun.c:1365    #11 0x5ebc8eec63fe in run_mod ../Python/pythonrun.c:1459    #12 0x5ebc8eecb0a7 in pyrun_file ../Python/pythonrun.c:1293    #13 0x5ebc8eecb0a7 in _PyRun_SimpleFileObject ../Python/pythonrun.c:521    #14 0x5ebc8eecbbcc in _PyRun_AnyFileObject ../Python/pythonrun.c:81    #15 0x5ebc8ef3e3cc in pymain_run_file_obj ../Modules/main.c:410    #16 0x5ebc8ef3e3cc in pymain_run_file ../Modules/main.c:429    #17 0x5ebc8ef3e3cc in pymain_run_python ../Modules/main.c:691    #18 0x5ebc8ef3fcae in Py_RunMain ../Modules/main.c:772    #19 0x5ebc8ef3fcae in pymain_main ../Modules/main.c:802    #20 0x5ebc8ef3fcae in Py_BytesMain ../Modules/main.c:826    #21 0x7079e43e21c9  (/lib/x86_64-linux-gnu/libc.so.6+0x2a1c9) (BuildId: 282c2c16e7b6600b0b22ea0c99010d2795752b5f)    #22 0x7079e43e228a in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2a28a) (BuildId: 282c2c16e7b6600b0b22ea0c99010d2795752b5f)0x502000004bb0 is located 56 bytes after 8-byte region [0x502000004b70,0x502000004b78)allocated by thread T0 here:    #0 0x7079e47b0340 in calloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:77    #1 0x5ebc8ea1cccc in PyList_New ../Objects/listobject.c:262    #2 0x7079e3b12108 in create_indent_cache ../Modules/_json.c:1393    #3 0x7079e3b12108 in encoder_call ../Modules/_json.c:1477    #4 0x5ebc8e985c5d in _PyObject_MakeTpCall ../Objects/call.c:242    #5 0x5ebc8e828ad2 in _PyEval_EvalFrameDefault ../Python/generated_cases.c.h:1620    #6 0x5ebc8ed07fb6 in _PyEval_EvalFrame ../Include/internal/pycore_ceval.h:121    #7 0x5ebc8ed07fb6 in _PyEval_Vector ../Python/ceval.c:2005    #8 0x5ebc8ed07fb6 in PyEval_EvalCode ../Python/ceval.c:888    #9 0x5ebc8eec63fe in run_eval_code_obj ../Python/pythonrun.c:1365    #10 0x5ebc8eec63fe in run_mod ../Python/pythonrun.c:1459    #11 0x5ebc8eecb0a7 in pyrun_file ../Python/pythonrun.c:1293    #12 0x5ebc8eecb0a7 in _PyRun_SimpleFileObject ../Python/pythonrun.c:521    #13 0x5ebc8eecbbcc in _PyRun_AnyFileObject ../Python/pythonrun.c:81    #14 0x5ebc8ef3e3cc in pymain_run_file_obj ../Modules/main.c:410    #15 0x5ebc8ef3e3cc in pymain_run_file ../Modules/main.c:429    #16 0x5ebc8ef3e3cc in pymain_run_python ../Modules/main.c:691    #17 0x5ebc8ef3fcae in Py_RunMain ../Modules/main.c:772    #18 0x5ebc8ef3fcae in pymain_main ../Modules/main.c:802    #19 0x5ebc8ef3fcae in Py_BytesMain ../Modules/main.c:826    #20 0x7079e43e21c9  (/lib/x86_64-linux-gnu/libc.so.6+0x2a1c9) (BuildId: 282c2c16e7b6600b0b22ea0c99010d2795752b5f)    #21 0x7079e43e228a in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2a28a) (BuildId: 282c2c16e7b6600b0b22ea0c99010d2795752b5f)SUMMARY: AddressSanitizer: heap-buffer-overflow ../Modules/_json.c:1411 in update_indent_cacheShadow bytes around the buggy address:  0x502000004900: fa fa fd fa fa fa fd fa fa fa fd fa fa fa fd fa  0x502000004980: fa fa fd fa fa fa fd fa fa fa fd fa fa fa fd fd  0x502000004a00: fa fa fd fa fa fa fd fa fa fa fd fa fa fa fd fa  0x502000004a80: fa fa fd fa fa fa fd fd fa fa fd fa fa fa fd fd  0x502000004b00: fa fa fd fa fa fa fd fa fa fa fd fa fa fa 00 fa=>0x502000004b80: fa fa fa fa fa fa[fa]fa fa fa fa fa fa fa fa fa  0x502000004c00: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa  0x502000004c80: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa  0x502000004d00: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa  0x502000004d80: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa  0x502000004e00: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa faShadow byte legend (one shadow byte represents 8 application bytes):  Addressable:           00  Partially addressable: 01 02 03 04 05 06 07   Heap left redzone:       fa  Freed heap region:       fd  Stack left redzone:      f1  Stack mid redzone:       f2  Stack right redzone:     f3  Stack after return:      f5  Stack use after scope:   f8  Global redzone:          f9  Global init order:       f6  Poisoned by user:        f7  Container overflow:      fc  Array cookie:            ac  Intra object redzone:    bb  ASan internal:           fe  Left alloca redzone:     ca  Right alloca redzone:    cb==3279101==ABORTING