Dereferencing Ptr{Ptr{Int32}}

[abraemer]

@NimaPoshtiban

a = fill(0,(3,3))
a[3,1]=1
array_of_int_pointers = Array{Ptr{Cint}}(undef, 3,3)

for i in 1:3, j in 1:3
    array_of_int_pointers[i, j] = Libc.malloc(Csize_t(sizeof(Cint)))
    unsafe_store!(array_of_int_pointers[i, j],a[i,j])
    
end

Note that this code is subtly different from @GunnarFarneback’s version.
You allocate 9 pieces of memory each fitting a single Int. Whereas Gunnar allocates only 3 pieces of memory each fitting 3 Ints. This will generally not be same - except if your subsequent allocations end up being sequential in memory.

[NimaPoshtiban]

Sharp eyes! You are a disassembler yourself !