src/test/ui/union/union-lint-dead-code.rs

   1 #![deny(dead_code)]
   2
   3 union Foo {
   4     x: usize,
   5     b: bool, //~ ERROR: field is never read
   6     _unused: u16,
   7 }
   8
   9 fn field_read(f: Foo) -> usize {
  10     unsafe { f.x }
  11 }
  12
  13 fn main() {
  14     let _ = field_read(Foo { x: 2 });
  15 }