assert(_struct->fields->len == _struct->declaration->fields->len);
for (i = 0; i < _struct->fields->len; i++) {
struct definition *field = g_ptr_array_index(_struct->fields, i);
assert(_struct->fields->len == _struct->declaration->fields->len);
for (i = 0; i < _struct->fields->len; i++) {
struct definition *field = g_ptr_array_index(_struct->fields, i);