// binary, no reading
		return info, nil
	}

	f, err := ctxt.openFile(info.name)
	if err != nil {
		return nil, err
	}

	if strings.HasSuffix(name, ".go") {
		err = readGoInfo(f, info)
		if strings.HasSuffix(name, "_test.go") {
			binaryOnly = nil // ignore //go:binary-only-package comments in _test.go files
		}
	} else {