Go Systems Programming

Unsafe code

Unsafe code is Go code that bypasses the type safety and memory security of Go and requires the use of the unsafe package. You will most likely never need to use unsafe code in your Go programs but if for some strange reason you ever need to, it will probably have to do with pointers.

Using unsafe code can be dangerous for your programs, so only use it when it is absolutely necessary. If you are not completely sure that you need it, then do not use it.

The example code in this subsection is saved as unsafe.go and will be presented in two parts.

The first part is as follows:

package main 
 
import ( 
   "fmt" 
   "unsafe" 
) 
 
func main() { 
   var value int64 = 5 
   var p1 = &value 
   var p2 = (*int32)(unsafe.Pointer(p1)) 

You first create a new int64 ...