tests/ui/issues/issue-15783.rs

   1 pub fn foo(params: Option<&[&str]>) -> usize {
   2     params.unwrap().first().unwrap().len()
   3 }
   4
   5 fn main() {
   6     let name = "Foo";
   7     let x = Some(&[name]);
   8     let msg = foo(x);
   9     //~^ ERROR mismatched types
  10     //~| expected enum `Option<&[&str]>`
  11     //~| found enum `Option<&[&str; 1]>`
  12     //~| expected slice `[&str]`, found array `[&str; 1]`
  13     assert_eq!(msg, 3);
  14 }