Macro expansion mutates original list

[spy16]

1. define a macro that returns [] on expansion : (def my-macro (macro* [& rest] []))
2. create a list that would invoke my-macro when evaluated: (def a-list '(my-macro 1 2 "hello"))
3. a-list represents the list (my-macro 1 2 "hello")
4. evaluate the list: (eval a-list)
5. check the value of a-list which is now result of macro expansion (i.e., (do [])) instead of its original value (my-macro 1 2 "hello").