// Symbol data may be read-only. Apply relocations in a
		// temporary buffer, and immediately write it out.
		P := ldr.Data(s)
		relocs := ldr.Relocs(s)
		if relocs.Count() != 0 {
			relocbuf = append(relocbuf[:0], P...)
			P = relocbuf
			st.relocsym(s, P)
		}
		if _, err := z.Write(P); err != nil {
			log.Fatalf("compression failed: %s", err)
		}
		for i := ldr.SymSize(s) - int64(len(P)); i > 0; {