32 lines
866 B
Go
32 lines
866 B
Go
package main
|
|
|
|
import (
|
|
"fmt"
|
|
"unsafe"
|
|
)
|
|
|
|
func main() {
|
|
myVar := 3.14
|
|
myPointer := &myVar
|
|
fmt.Println("Address:", myPointer, &myVar)
|
|
fmt.Printf("Address: %p %p\n", myPointer, &myVar)
|
|
|
|
var addr64 int64
|
|
var addr32 int32
|
|
ptr := unsafe.Pointer(myPointer)
|
|
if unsafe.Sizeof(ptr) <= unsafe.Sizeof(addr64) {
|
|
addr64 = int64(uintptr(ptr))
|
|
fmt.Printf("Pointer stored in int64: %#016x\n", addr64)
|
|
}
|
|
if unsafe.Sizeof(ptr) <= unsafe.Sizeof(addr32) {
|
|
// Only runs on architectures where a pointer is <= 32 bits
|
|
addr32 = int32(uintptr(ptr))
|
|
fmt.Printf("Pointer stored in int32: %#08x\n", addr32)
|
|
}
|
|
addr := uintptr(ptr)
|
|
fmt.Printf("Pointer stored in uintptr: %#08x\n", addr)
|
|
|
|
fmt.Println("value as float:", myVar)
|
|
i := (*int32)(unsafe.Pointer(&myVar))
|
|
fmt.Printf("value as int32: %#08x\n", *i)
|
|
}
|