1 warning: underscore literal suffix is not allowed
2 --> $DIR/underscore-suffix-for-string.rs:4:18
7 = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
8 = note: see issue #42326 <https://github.com/rust-lang/rust/issues/42326> for more information
10 warning: 1 warning emitted