@kurator88 @danilax86 что-то вроде:

R* result = ERROR;

A* a = create_a_or_fail();
if (!a) goto cleanup_a;

B* b = create_b_or_fail();
if (!b) goto cleanup_b();

C* c = get_c_or_fail();
if (!c) goto cleanup_c;

result = do_stuff(a, b, c);

cleanup_c:
destroy_c(c);

cleanup_b:
destroy_b(b);

cleanup_a:
destroy_a(a);

return result;