size_t const r = fread (_data.get(), 1, _size, f);
if (r != size_t (_size)) {
fclose (f);
throw FileError (_("could not read from file"), file);
}
size_t const r = fread (_data.get(), 1, _size, f);
if (r != size_t (_size)) {
fclose (f);
throw FileError (_("could not read from file"), file);
}