src/test/ui/consts/const-eval/promoted_errors.rs

   1 // build-pass
   2 // ignore-pass (emit codegen-time warnings and verify that they are indeed warnings and not errors)
   3 // compile-flags: -O
   4
   5 #![warn(const_err)]
   6
   7 fn main() {
   8     println!("{}", 0u32 - 1);
   9     let _x = 0u32 - 1;
  10     //~^ WARN const_err
  11     println!("{}", 1 / (1 - 1));
  12     //~^ WARN attempt to divide by zero [const_err]
  13     //~| WARN const_err
  14     //~| WARN erroneous constant used [const_err]
  15     let _x = 1 / (1 - 1);
  16     //~^ WARN const_err
  17     println!("{}", 1 / (false as u32));
  18     //~^ WARN attempt to divide by zero [const_err]
  19     //~| WARN const_err
  20     //~| WARN erroneous constant used [const_err]
  21     let _x = 1 / (false as u32);
  22     //~^ WARN const_err
  23 }