golang从dll返回char *作为返回值

char* fn()

package main

import (
    "fmt"
    "syscall"
    "unsafe"
)

func main() {
    dll := syscall.MustLoadDLL("my.dll")
    fn := dll.MustFindProc("fn")

    r, _, _ := fn.Call()

    p := (*byte)(unsafe.Pointer(r))
    // define a slice to fill with the p string
    data := make([]byte, 0)

    // loop until find '\0'
    for *p != 0 {
        data = append(data, *p)        // append 1 byte
        r += unsafe.Sizeof(byte(0))    // move r to next byte
        p = (*byte)(unsafe.Pointer(r)) // get the byte value
    }
    name := string(data) // convert to Golang string
    fmt.Println(name)
}

I have some questions:

append()unsafe.Pointer(r)possible misuse of unsafe.Pointer-unsafeptr=falsegovetlet g:ale_go_govet_options = '-unsafeptr=false'