rust/tests/ui/impl-trait/impl-trait-plus-priority.rs
Nicholas Nethercote 76adf05cfb Rename -Zparse-only.
I was surprised to find that running with `-Zparse-only` only parses the
crate root file. Other files aren't parsed because that happens later
during expansion.

This commit renames the option and updates the help message to make this
clearer.
2024-11-29 06:10:15 +11:00

49 lines
1.3 KiB
Rust

//@ compile-flags: -Z parse-crate-root-only
fn f() -> impl A + {} // OK
fn f() -> impl A + B {} // OK
fn f() -> dyn A + B {} // OK
fn f() -> A + B {} // OK
impl S {
fn f(self) -> impl A + { // OK
let _ = |a, b| -> impl A + {}; // OK
}
fn f(self) -> impl A + B { // OK
let _ = |a, b| -> impl A + B {}; // OK
}
fn f(self) -> dyn A + B { // OK
let _ = |a, b| -> dyn A + B {}; // OK
}
fn f(self) -> A + B { // OK
let _ = |a, b| -> A + B {}; // OK
}
}
type A = fn() -> impl A +;
//~^ ERROR ambiguous `+` in a type
type A = fn() -> impl A + B;
//~^ ERROR ambiguous `+` in a type
type A = fn() -> dyn A + B;
//~^ ERROR ambiguous `+` in a type
type A = fn() -> A + B;
//~^ ERROR expected a path on the left-hand side of `+`, not `fn() -> A`
type A = Fn() -> impl A +;
//~^ ERROR ambiguous `+` in a type
type A = Fn() -> impl A + B;
//~^ ERROR ambiguous `+` in a type
type A = Fn() -> dyn A + B;
//~^ ERROR ambiguous `+` in a type
type A = Fn() -> A + B; // OK, interpreted as `(Fn() -> A) + B` for compatibility
type A = &impl A +;
//~^ ERROR ambiguous `+` in a type
type A = &impl A + B;
//~^ ERROR ambiguous `+` in a type
type A = &dyn A + B;
//~^ ERROR ambiguous `+` in a type
type A = &A + B;
//~^ ERROR expected a path on the left-hand side of `+`, not `&A`
fn main() {}