pmgo % go run pmgo.go
# golang.org/x/sys/unix
../../../go/pkg/mod/golang.org/x/sys@v0.0.0-20191026070338-33540a1f6037/unix/syscall_darwin.1_13.go:25:3: //go:linkname must refer to declared function or variable
../../../go/pkg/mod/golang.org/x/sys@v0.0.0-20191026070338-33540a1f6037/unix/zsyscall_darwin_arm64.1_13.go:27:3: //go:linkname must refer to declared function or variable
../../../go/pkg/mod/golang.org/x/sys@v0.0.0-20191026070338-33540a1f6037/unix/zsyscall_darwin_arm64.1_13.go:40:3: //go:linkname must refer to declared function or variable
../../../go/pkg/mod/golang.org/x/sys@v0.0.0-20191026070338-33540a1f6037/unix/zsyscall_darwin_arm64.go:28:3: //go:linkname must refer to declared function or variable
../../../go/pkg/mod/golang.org/x/sys@v0.0.0-20191026070338-33540a1f6037/unix/zsyscall_darwin_arm64.go:43:3: //go:linkname must refer to declared function or variable
../../../go/pkg/mod/golang.org/x/sys@v0.0.0-20191026070338-33540a1f6037/unix/zsyscall_darwin_arm64.go:59:3: //go:linkname must refer to declared function or variable
../../../go/pkg/mod/golang.org/x/sys@v0.0.0-20191026070338-33540a1f6037/unix/zsyscall_darwin_arm64.go:75:3: //go:linkname must refer to declared function or variable
../../../go/pkg/mod/golang.org/x/sys@v0.0.0-20191026070338-33540a1f6037/unix/zsyscall_darwin_arm64.go:90:3: //go:linkname must refer to declared function or variable
../../../go/pkg/mod/golang.org/x/sys@v0.0.0-20191026070338-33540a1f6037/unix/zsyscall_darwin_arm64.go:105:3: //go:linkname must refer to declared function or variable
../../../go/pkg/mod/golang.org/x/sys@v0.0.0-20191026070338-33540a1f6037/unix/zsyscall_darwin_arm64.go:121:3: //go:linkname must refer to declared function or variable
../../../go/pkg/mod/golang.org/x/sys@v0.0.0-20191026070338-33540a1f6037/unix/zsyscall_darwin_arm64.go:121:3: too many errors