LibC - free mallocd memory

[perfecto25]

according to this post, setting pointer to null allows Crystal GC to clean out the memory?

How to manually free allocated memory (Pointer.malloc)

You can un-reference (pointer going out of the scope, pointer assigned to some other value/reference etc) the pointer so that GC can re-claim the memory. Another possibility here could be you invoke Pointer#realloc with lower size or 0. # un-reference @arr = Pointer(Floa64).null # OR # re-allocate pointer size @arr = @arr.realloc(0)

Is this correct?

    avg = Pointer(Float64).malloc(3)
   
    # Call the C function to get load averages
    if LibC.getloadavg(avg, 3) != -1
      load_avg = [avg[0], avg[1], avg[2]]
      
      # free the mallocd memory
      avg = Pointer(Float64).null