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//@ compile-flags: --crate-type=lib
// When we get multiple `#[default]` variants, we emit several tool-only suggestions
// to remove all except one of the `#[default]`s.
#[derive(Default)] //~ ERROR multiple declared defaults
enum A {
#[default] //~ HELP make `B` default
#[default] //~ HELP make `A` default
A,
#[default] // also "HELP make `A` default", but compiletest can't handle multispans
B,
}
// Originally, we took each defaulted variant and emitted the suggestion for every variant
// with a different identifier, causing an ICE when multiple variants have the same identifier:
// https://github.com/rust-lang/rust/pull/105106
#[derive(Default)] //~ ERROR multiple declared defaults
enum E {
#[default] //~ HELP make `A` default
A,
#[default] //~ HELP make `A` default
A, //~ ERROR defined multiple times
}
// Then, we took each defaulted variant and emitted the suggestion for every variant
// with a different span, causing an ICE when multiple variants have the same span:
// https://github.com/rust-lang/rust/issues/118119
macro_rules! m {
{ $($id:ident)* } => {
#[derive(Default)] //~ ERROR multiple declared defaults
enum F {
$(
#[default]
$id,
)*
}
}
}
m! { A B }
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