What version of Go are you using (go version)?

PS C:\Users\cliente\Desktop\gostudies> go version
go version go1.15.3 windows/amd64

Does this issue reproduce with the latest release?

Yes.

What operating system and processor architecture are you using (go env)?

$ go env

What did you do?

I'm studying about the unsafe.Pointer when working with pointers.

I looked that the unsafe.Pointer should return a float, or an int into another format, for example:

If I have an int64 variable pointer, I should transform into int32 by the (*int32)(unsafe.Pointer(t.value)) usage.

package main

import (
	"fmt"
	"unsafe"
)

type test struct {
	value *int64
}

func main() {
	var v int64
	v = 123
	t := test{&v}

	var ptest = (*int32)(unsafe.Pointer(t.value))
	fmt.Println(ptest)
	fmt.Println(*ptest + 10)
}

This is good behavior.

So, I tried to change the int32 of the unsafe.Pointer to string like this function:

package main

import (
	"fmt"
	"unsafe"
)

type test struct {
	value *string
}

func main() {
	var v string
	v = "123"
	t := test{&v}

	var ptest = (*int32)(unsafe.Pointer(t.value))
	fmt.Println(ptest)
	fmt.Println(*ptest + 10)
}

When I did it, I am getting the following response from execution:

PS C:\Users\cliente\Desktop\gostudies> go run main.go
0xc00004a1f0
17736171

What did you expect to see?

I expected to convert my "123" to 123 integer to sum with my 10 number.

What did you see instead?

This number 17736171 is a "random" number.

What does the 17736171 meaning in this case?