[go-nuts] Is the memory allocated for x in f guaranteed to be reachable after a GC call?

[T L]

package main

import "fmt"
import "unsafe"
import "runtime"

func f() **int {
    for false{} // avoid f being inlined.
    
    s := make([]byte, unsafe.Sizeof((*int)(nil))) // enough memory to hold 
a pointer
    pp := (**int)(unsafe.Pointer(&s[0]))
    x := 123
    *pp = &x
    return pp
}

var a []int

func main() {
    p := f()
    
    runtime.GC()
    
    // Is the memory allocated for x in f
    // guaranteed to be reachable at this moment?
    
    a = make([]int, 10)
    fmt.Println(**p, a)
}


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