rust/tests/ui/did_you_mean/dont-suggest-hygienic-fields.rs
2023-10-04 21:36:04 +02:00

48 lines
1.3 KiB
Rust

// Regression test for issue #116334.
// Don't include hygienic fields from different syntax contexts in
// the list of available or similarly named fields.
#![feature(decl_macro)]
macro compound($Ty:ident) {
#[derive(Default)]
struct $Ty {
field: u32, // field `field` is hygienic
}
}
macro component($Ty:ident) {
struct $Ty(u64); // field `0` is hygienic (but still accessible via the constructor)
}
compound! { Compound }
component! { Component }
fn main() {
let ty = Compound::default();
let _ = ty.field; //~ ERROR no field `field` on type `Compound`
let _ = ty.fieeld; //~ ERROR no field `fieeld` on type `Compound`
let Compound { field } = ty;
//~^ ERROR struct `Compound` does not have a field named `field`
//~| ERROR pattern requires `..` due to inaccessible fields
//~| HELP ignore the inaccessible and unused fields
let ty = Component(90);
let _ = ty.0; //~ ERROR no field `0` on type `Component`
}
environment!();
macro environment() {
struct Crate { field: () }
// Here, we do want to suggest `field` even though it's hygienic
// precisely because they come from the same syntax context.
const CRATE: Crate = Crate { fiel: () };
//~^ ERROR struct `Crate` has no field named `fiel`
//~| HELP a field with a similar name exists
}