As the instruction 
of https://github.com/golang/go/wiki/cgo#turning-c-arrays-into-go-slices 
shows, the GC of Go will not release it.
An example as the following, but I have a question about when and how to 
release this `slice`?

import "C"
import "unsafe"
...
        var theCArray *C.YourType = C.getTheArray()
        length := C.getTheArrayLength()
        slice := (*[1 << 
30]C.YourType)(unsafe.Pointer(theCArray))[:length:length]


It is important to keep in mind that the Go garbage collector will not 
> interact with this data, and that if it is freed from the C side of things, 
> the behavior of any Go code using the slice is nondeterministic.
>

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