rust/tests/ui/used.rs

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#[used]
static FOO: u32 = 0; // OK
#[used] //~ ERROR attribute must be applied to a `static` variable
fn foo() {}
#[used] //~ ERROR attribute must be applied to a `static` variable
struct Foo {}
#[used] //~ ERROR attribute must be applied to a `static` variable
trait Bar {}
#[used] //~ ERROR attribute must be applied to a `static` variable
impl Bar for Foo {}
fn main() {}