src/test/ui/single-use-lifetime/one-use-in-struct.rs

   1 // Test that we do not warn for named lifetimes in structs,
   2 // even when they are only used once (since to not use a named
   3 // lifetime is illegal!)
   4 //
   5 // build-pass (FIXME(62277): could be check-pass?)
   6
   7 #![deny(single_use_lifetimes)]
   8 #![allow(dead_code)]
   9 #![allow(unused_variables)]
  10
  11 struct Foo<'f> {
  12     data: &'f u32
  13 }
  14
  15 enum Bar<'f> {
  16     Data(&'f u32)
  17 }
  18
  19 trait Baz<'f> { }
  20
  21 // `Derive`d impls shouldn't trigger a warning, either (Issue #53738).
  22
  23 #[derive(Debug)]
  24 struct Quux<'a> {
  25     priors: &'a u32,
  26 }
  27
  28 fn main() { }