extract_as_lword
content = extract_as_lword(&state, &fdesc);
lw = extract_as_lword(state, &layout->pr_effective);
lw = extract_as_lword(state, &layout->pr_inherit);
lw = extract_as_lword(state, &layout->pr_lower);
lw = extract_as_lword(state, &layout->pr_upper);