rust/tests/ui/constructor-lifetime-args.rs
Michael Howell a5b639dc01 diagnostics: remove inconsistent English article "this" from E0107
Consider `tests/ui/const-generics/generic_const_exprs/issue-102768.stderr`,
the error message where it gives additional notes about where the associated
type is defined, and how the dead code lint doesn't have an article,
like in `tests/ui/lint/dead-code/issue-85255.stderr`. They don't have
articles, so it seems unnecessary to have one here.
2023-02-23 10:27:06 -07:00

27 lines
961 B
Rust

// All lifetime parameters in struct constructors are currently considered early bound,
// i.e., `S::<ARGS>` is interpreted kinda like an associated item `S::<ARGS>::ctor`.
// This behavior is a bit weird, because if equivalent constructor were written manually
// it would get late bound lifetime parameters.
// Variant constructors behave in the same way, lifetime parameters are considered
// belonging to the enum and being early bound.
// https://github.com/rust-lang/rust/issues/30904
struct S<'a, 'b>(&'a u8, &'b u8);
enum E<'a, 'b> {
V(&'a u8),
U(&'b u8),
}
fn main() {
S(&0, &0); // OK
S::<'static>(&0, &0);
//~^ ERROR struct takes 2 lifetime arguments
S::<'static, 'static, 'static>(&0, &0);
//~^ ERROR struct takes 2 lifetime arguments
E::V(&0); // OK
E::V::<'static>(&0);
//~^ ERROR enum takes 2 lifetime arguments
E::V::<'static, 'static, 'static>(&0);
//~^ ERROR enum takes 2 lifetime arguments
}