// the file header and TOC. (0x7e -> 0x7f)
		b[0x11]++
		b[0x9d]++

		// TODO(bradfitz): add a new test that only corrupts
		// one of these values, and verify that that's also an
		// error. Currently, the reader code doesn't verify the
		// fileheader and TOC's crc32 match if they're both
		// non-zero and only the second line above, the TOC,
		// is what matters.
	})
}

		writeErrorResponse(ctx, w, toAPIError(ctx, errs[0]), r.URL)
		return
	}

	for i := range errs {
		// DeleteMarkerVersionID is not used specifically to avoid
		// lookup errors, since DeleteMarkerVersionID is only
		// created during DeleteMarker creation when client didn't
		// specify a versionID.
		objToDel := ObjectToDelete{
			ObjectV: ObjectV{
				ObjectName: decodeDirObject(dObjects[i].ObjectName),

		t.Errorf("NewWriterSize's Writer.Size = %d; want %d", got, want)
	}
}

// An onlyReader only implements io.Reader, no matter what other methods the underlying implementation may have.
type onlyReader struct {
	io.Reader
}

// An onlyWriter only implements io.Writer, no matter what other methods the underlying implementation may have.
type onlyWriter struct {
	io.Writer
}

	{file: "myobject", offset: 1000, length: 1001, algorithm: BLAKE2b512, expError: nil},        // 15
}

// TestXLStorageReadFile with bitrot verification - tests the xlStorage level
// ReadFile API with a BitrotVerifier. Only tests hashing related
// functionality. Other functionality is tested with
// TestXLStorageReadFile.
func TestXLStorageReadFileWithVerify(t *testing.T) {
	volume, object := "test-vol", "myobject"