Why does the following program crash?
package main
import "fmt"
import "unsafe"
import "reflect"
func main() {
s := "keep"
hdr := (*reflect.StringHeader)(unsafe.Pointer(&s))
byteSequence := (*byte)(unsafe.Pointer(hdr.Data))
fmt.Println(*byteSequence) // k
*byteSequence = 'j' // crash here
fmt.Println(s) // expect: jeep
}
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