if err != nil {
		fmt.Println(err)
		os.Exit(1)
	}
	f.Close()

	out := run("go", "tool", "compile", "-p=p", "-o", f.Name(), "-S", "a.go")
	os.Remove(f.Name())

	// 6g/8g print the offset as dec, but 5g/9g print the offset as hex.
	patterns := []string{
		`rel 0\+\d t=R_ADDR p\.x\+8\r?\n`,       // y = &x.b
		`rel 0\+\d t=R_ADDR p\.x\+(28|1c)\r?\n`, // z = &x.d.q
		`rel 0\+\d t=R_ADDR p\.b\+5\r?\n`,       // c = &b[5]

000000a0  2d 00 02 01 01 00 33 00  26 00 24 00 1d 00 20 89  |-.....3.&.$... .|
000000b0  77 64 a7 d7 9f 30 4d 07  5c 4c f5 3b 67 a3 f2 e3  |wd...0M.\L.;g...|
000000c0  55 bb bb 9f 2e 18 26 04  b2 1a a2 64 c5 39 67     |U.....&....d.9g|
>>> Flow 2 (server to client)
00000000  16 03 03 00 7a 02 00 00  76 03 03 00 00 00 00 00  |....z...v.......|
00000010  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|