rust/src/test/rustdoc-ui/display-output.rs

// Test that `--show-output` has an effect and `allow(unused)` can be overriden.

// check-pass
// edition:2018
// compile-flags:--test --test-args=--show-output
// normalize-stdout-test: "src/test/rustdoc-ui" -> "$$DIR"
// normalize-stdout-test "finished in \d+\.\d+s" -> "finished in $$TIME"

/// ```
/// #![warn(unused)]
/// let x = 12;
///
/// fn foo(x: &std::fmt::Display) {}
/// ```
pub fn foo() {}