How to `unsafe_wrap()` with array of struct?

General Usage
,
1

I have C code that returns an array of struct using pointer:

mutable struct Result
    value :: Cdouble
    len_sequence :: Cint    # length of sequence[]
    sequence :: Ptr{Cint}
end

mutable struct ResultList
    len_list :: Cint        # length of list[]
    list :: Ptr{Result}
end

Basically, ResultList is a vector of Result.

After ccall(), I have result_list :: ResultList on hand. The following works:

# result_list :: ResultList
for i in 1:result_list.len_list
    result = unsafe_load(result_list.list, i)                              # result :: Result
    seq = unsafe_wrap(Vector{Cint}, result.sequence, result.len_sequence)  # seq :: Vector{Cint}
    @show seq # works as intended
end

But the following produces segfault:

unsafe_wrap(Array, result_list.list, result_list.len_list)

What am I doing wrong? Is it not possible to use unsafe_wrap() in this case?