gh-156939: Detect buffer overflow in bytearray - #157382
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Add bytearray_check_consistency() and bytearray_check_trailing_null_byte() functions in call them in most bytearray methods.
Reset the trailing byte before destroying the bytes/bytearray object.
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Add bytearray_check_consistency() and
bytearray_check_trailing_null_byte() functions in call them in most bytearray methods.