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rust/tests/ui/tool-attributes/duplicate-diagnostic.rs

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//@ aux-build: p1.rs
//@ aux-build: p2.rs
#![feature(rustc_attrs)]
extern crate p1;
extern crate p2;
#[rustc_diagnostic_item = "Foo"]
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pub struct Foo {} //~ ERROR duplicate diagnostic item in crate `duplicate_diagnostic`: `Foo`
//~^ NOTE the diagnostic item is first defined in crate `p2`
fn main() {}
//~? ERROR duplicate diagnostic item in crate `p2`
//~? NOTE the diagnostic item is first defined in crate `p1`