src/test/ui/parser/require-parens-for-chained-comparison.rs

   1 fn f<T>() {}
   2 struct X;
   3
   4 fn main() {
   5     false == false == false;
   6     //~^ ERROR comparison operators cannot be chained
   7     //~| HELP split the comparison into two
   8
   9     false == 0 < 2;
  10     //~^ ERROR comparison operators cannot be chained
  11     //~| HELP parenthesize the comparison
  12
  13     f<X>();
  14     //~^ ERROR comparison operators cannot be chained
  15     //~| HELP use `::<...>` instead of `<...>` to specify type arguments
  16
  17     f<Result<Option<X>, Option<Option<X>>>(1, 2);
  18     //~^ ERROR comparison operators cannot be chained
  19     //~| HELP use `::<...>` instead of `<...>` to specify type arguments
  20
  21     use std::convert::identity;
  22     let _ = identity<u8>;
  23     //~^ ERROR comparison operators cannot be chained
  24     //~| HELP use `::<...>` instead of `<...>` to specify type arguments
  25     //~| HELP or use `(...)` if you meant to specify fn arguments
  26 }