rust/tests/ui/nll/user-annotations/adt-nullary-enums.rs

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// Unit test for the "user substitutions" that are annotated on each
// node.
#![allow(warnings)]
use std::cell::Cell;
enum SomeEnum<T> {
SomeVariant(T),
SomeOtherVariant,
}
fn combine<T>(_: T, _: T) { }
fn no_annot() {
let c = 66;
combine(SomeEnum::SomeVariant(Cell::new(&c)), SomeEnum::SomeOtherVariant);
}
fn annot_underscore() {
let c = 66;
combine(SomeEnum::SomeVariant(Cell::new(&c)), SomeEnum::SomeOtherVariant::<Cell<_>>);
}
fn annot_reference_any_lifetime() {
let c = 66;
combine(SomeEnum::SomeVariant(Cell::new(&c)), SomeEnum::SomeOtherVariant::<Cell<&u32>>);
}
fn annot_reference_static_lifetime() {
let c = 66;
combine(
SomeEnum::SomeVariant(Cell::new(&c)), //~ ERROR
SomeEnum::SomeOtherVariant::<Cell<&'static u32>>,
);
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}
fn annot_reference_named_lifetime<'a>(_d: &'a u32) {
let c = 66;
combine(
SomeEnum::SomeVariant(Cell::new(&c)), //~ ERROR
SomeEnum::SomeOtherVariant::<Cell<&'a u32>>,
);
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}
fn annot_reference_named_lifetime_ok<'a>(c: &'a u32) {
combine(SomeEnum::SomeVariant(Cell::new(c)), SomeEnum::SomeOtherVariant::<Cell<&'a u32>>);
}
fn annot_reference_named_lifetime_in_closure<'a>(_: &'a u32) {
let _closure = || {
let c = 66;
combine(
SomeEnum::SomeVariant(Cell::new(&c)), //~ ERROR
SomeEnum::SomeOtherVariant::<Cell<&'a u32>>,
);
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};
}
fn annot_reference_named_lifetime_in_closure_ok<'a>(c: &'a u32) {
let _closure = || {
combine(
SomeEnum::SomeVariant(Cell::new(c)),
SomeEnum::SomeOtherVariant::<Cell<&'a u32>>,
);
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};
}
fn main() { }