src/test/ui/dyn-keyword/issue-56327-dyn-trait-in-macro-is-okay.rs

   1 // check-pass
   2
   3 // rust-lang/rust#56327: Some occurrences of `dyn` within a macro are
   4 // not instances of identifiers, and thus should *not* be caught by the
   5 // keyword_ident lint.
   6 //
   7 // Otherwise, rustfix replaces the type `Box<dyn Drop>` with
   8 // `Box<r#dyn Drop>`, which is injecting a bug rather than fixing
   9 // anything.
  10
  11 #![deny(rust_2018_compatibility)]
  12
  13 macro_rules! foo {
  14     () => {
  15         fn generated_foo() {
  16             let _x: Box<dyn Drop>;
  17         }
  18     }
  19 }
  20
  21 foo!();
  22
  23 fn main() {
  24     generated_foo();
  25 }