1 error[E0277]: the size for values of type `str` cannot be known at compilation time
2 --> $DIR/issue-38954.rs:11:23
4 LL | fn _test(ref _p: str) {}
5 | ^ doesn't have a size known at compile-time
7 = help: the trait `std::marker::Sized` is not implemented for `str`
8 = note: to learn more, visit <https://doc.rust-lang.org/book/second-edition/ch19-04-advanced-types.html#dynamically-sized-types-and-the-sized-trait>
10 error: aborting due to previous error
12 For more information about this error, try `rustc --explain E0277`.