src/test/ui/mismatched_types/wrap-suggestion-privacy.rs

   1 mod inner {
   2     pub struct Wrapper<T>(T);
   3 }
   4
   5 fn needs_wrapper(t: inner::Wrapper<i32>) {}
   6 fn needs_wrapping(t: std::num::Wrapping<i32>) {}
   7 fn needs_ready(t: std::future::Ready<i32>) {}
   8
   9 fn main() {
  10     // Suggest wrapping expression because type is local
  11     // and its privacy can be easily changed
  12     needs_wrapper(0);
  13     //~^ ERROR mismatched types
  14     //~| HELP  try wrapping the expression in `inner::Wrapper`
  15
  16     // Suggest wrapping expression because field is accessible
  17     needs_wrapping(0);
  18     //~^ ERROR mismatched types
  19     //~| HELP  try wrapping the expression in `std::num::Wrapping`
  20
  21     // Do not suggest wrapping expression
  22     needs_ready(Some(0));
  23     //~^ ERROR mismatched types
  24 }