tests/ui/query-system/query_depth.rs

   1 // build-fail
   2
   3 #![recursion_limit = "64"]
   4 type Byte = Option<Option<Option<Option< Option<Option<Option<Option<
   5     Option<Option<Option<Option< Option<Option<Option<Option<
   6         Option<Option<Option<Option< Option<Option<Option<Option<
   7             Option<Option<Option<Option< Option<Option<Option<Option<
   8                 Option<Option<Option<Option< Option<Option<Option<Option<
   9                     Option<Option<Option<Option< Option<Option<Option<Option<
  10                         Option<Option<Option<Option< Option<Option<Option<Option<
  11                             Option<Option<Option<Option< Option<Option<Option<Option<
  12                                 Option<Option<Option<Option< Option<Option<Option<Option<
  13                                     Option<Option<Option<Option< Option<Option<Option<Option<
  14                                         Option<Option<Option<Option< Option<Option<Option<Option<
  15                                             Box<String>
  16                                         >>>> >>>>
  17                                     >>>> >>>>
  18                                 >>>> >>>>
  19                             >>>> >>>>
  20                         >>>> >>>>
  21                     >>>> >>>>
  22                 >>>> >>>>
  23             >>>> >>>>
  24         >>>> >>>>
  25     >>>> >>>>
  26 >>>> >>>>;
  27
  28 fn main() {
  29 //~^ ERROR: queries overflow the depth limit!
  30     println!("{}", std::mem::size_of::<Byte>());
  31 }