syscall.Mount crashes in Go

[fhs]

Steps to reproduce

Build this program in unix and run in harvey:

package main
import "syscall"
func main() {
	if err := syscall.Mount(0, 0, "", 0, ""); err != nil {
		println(err.Error())
	}
}

To build: GOOS=plan9 go build mount.go

Expected behavior

Program should print an error. On 9front:

cpu% ./mount
inappropriate use of fd

Actual behavior

Program crashes:

cpu% ./mount
mount 1063: suicide: invalid address 0x0/1 in sys call pc=0x25d980