src/test/ui/rust-2021/reserved-prefixes-migration.rs

   1 // check-pass
   2 // run-rustfix
   3 // compile-flags: -Z unstable-options --edition 2018
   4
   5 #![warn(rust_2021_prefixes_incompatible_syntax)]
   6
   7 macro_rules! m2 {
   8     ($a:tt $b:tt) => {};
   9 }
  10
  11 macro_rules! m3 {
  12     ($a:tt $b:tt $c:tt) => {};
  13 }
  14
  15 fn main() {
  16     m2!(z"hey");
  17     //~^ WARNING prefix `z` is unknown [rust_2021_prefixes_incompatible_syntax]
  18     //~| WARNING hard error in Rust 2021
  19     m2!(prefix"hey");
  20     //~^ WARNING prefix `prefix` is unknown [rust_2021_prefixes_incompatible_syntax]
  21     //~| WARNING hard error in Rust 2021
  22     m3!(hey#123);
  23     //~^ WARNING prefix `hey` is unknown [rust_2021_prefixes_incompatible_syntax]
  24     //~| WARNING hard error in Rust 2021
  25     m3!(hey#hey);
  26     //~^ WARNING prefix `hey` is unknown [rust_2021_prefixes_incompatible_syntax]
  27     //~| WARNING hard error in Rust 2021
  28 }
  29
  30 macro_rules! quote {
  31     (# name = # kind # value) => {};
  32 }
  33
  34 quote! {
  35     #name = #kind#value
  36     //~^ WARNING prefix `kind` is unknown [rust_2021_prefixes_incompatible_syntax]
  37     //~| WARNING hard error in Rust 2021
  38 }