}

	ehdrFlags = initEhdrFlags

	base := f.Offset()

	var hdrbuf [64]byte
	if _, err := io.ReadFull(f, hdrbuf[:]); err != nil {
		return errorf("malformed elf file: %v", err)
	}

	var e binary.ByteOrder
	switch elf.Data(hdrbuf[elf.EI_DATA]) {
	case elf.ELFDATA2LSB:
		e = binary.LittleEndian

	case elf.ELFDATA2MSB:
		e = binary.BigEndian

			r, idxCB := newS2CompressReader(bytes.NewReader(tt.data), int64(len(tt.data)), false)
			defer r.Close()

			var rdrBuf bytes.Buffer
			_, err := io.CopyBuffer(&rdrBuf, r, buf)
			if err != nil {
				t.Fatal(err)
			}
			r.Close()
			idx := idxCB()
			if !tt.wantIdx && len(idx) > 0 {
				t.Errorf("index returned above threshold")
			}