src/test/ui/lint/unused_braces.fixed

   1 // check-pass
   2 // run-rustfix
   3
   4 #![warn(unused_braces, unused_parens)]
   5 #![allow(unreachable_code, unused_unsafe)] // for rustfix
   6
   7 fn consume<T>(_: T) {}
   8
   9 fn main() {
  10     let _ = 7;
  11     //~^WARN unnecessary parentheses
  12
  13     // Do not emit a lint in these cases,
  14     // as we have to be careful with
  15     // `ref` patterns.
  16     {
  17         let _ = { 7 };
  18
  19         if let 7 = { 7 } { }
  20
  21         match { 7 } {
  22             _ => (),
  23         }
  24     }
  25
  26     if true {
  27         //~^ WARN unnecessary braces
  28     }
  29
  30     while false {
  31         //~^ WARN unnecessary braces
  32     }
  33
  34     let _: [u8; 3];
  35     //~^ WARN unnecessary braces
  36
  37     consume(7);
  38     //~^ WARN unnecessary braces
  39
  40     // Do not emit lint for multiline blocks.
  41     let _ = {
  42         7
  43     };
  44
  45     // Do not emit lint for unsafe blocks.
  46     let _ = unsafe { 7 };
  47
  48     // Do not emit lint, as the `{` would then
  49     // be parsed as part of the `return`.
  50     if { return } {
  51
  52     }
  53 }