julia> corrupt_stacktrace() = error("destroy stacktrace")

julia> f() = error("expected")
f (generic function with 1 method)

julia> try
        f()
       finally
        try; corrupt_stacktrace(); end
       end
ERROR: 
Stacktrace:
 [1] error at ./error.jl:33 [inlined]
 [2] corrupt_stacktrace at ./REPL[8]:1 [inlined] # should have been f!
 [3] macro expansion at ./REPL[14]:4 [inlined]
 [4] top-level scope at ./<missing>:0