mirror of https://github.com/rust-lang/rust
107 lines
2.4 KiB
Rust
107 lines
2.4 KiB
Rust
// Test for issue 81576
|
|
// Remove generic arguments if no method is found for all possible generic argument
|
|
|
|
use std::marker::PhantomData;
|
|
|
|
struct Wrapper2<'a, T, const C: usize> {
|
|
x: &'a T,
|
|
}
|
|
|
|
impl<'a, const C: usize> Wrapper2<'a, i8, C> {
|
|
fn method(&self) {}
|
|
}
|
|
|
|
impl<'a, const C: usize> Wrapper2<'a, i16, C> {
|
|
fn method(&self) {}
|
|
}
|
|
|
|
impl<'a, const C: usize> Wrapper2<'a, i32, C> {
|
|
fn method(&self) {}
|
|
}
|
|
struct Wrapper<T>(T);
|
|
|
|
impl Wrapper<i8> {
|
|
fn method(&self) {}
|
|
}
|
|
|
|
impl Wrapper<i16> {
|
|
fn method(&self) {}
|
|
}
|
|
|
|
impl Wrapper<i32> {
|
|
fn method(&self) {}
|
|
}
|
|
|
|
impl Wrapper<i64> {
|
|
fn method(&self) {}
|
|
}
|
|
|
|
impl Wrapper<u8> {
|
|
fn method(&self) {}
|
|
}
|
|
|
|
impl Wrapper<u16> {
|
|
fn method(&self) {}
|
|
}
|
|
|
|
struct Point<T> {
|
|
x: T,
|
|
y: T,
|
|
}
|
|
|
|
impl Point<f64> {
|
|
fn distance(&self) -> f64 {
|
|
self.x.hypot(self.y)
|
|
}
|
|
}
|
|
|
|
struct Other;
|
|
|
|
impl Other {
|
|
fn other(&self) {}
|
|
}
|
|
|
|
struct Struct<T> {
|
|
_phatom: PhantomData<T>,
|
|
}
|
|
|
|
impl<T> Default for Struct<T> {
|
|
fn default() -> Self {
|
|
Self { _phatom: PhantomData }
|
|
}
|
|
}
|
|
|
|
impl<T: Clone + Copy + PartialEq + Eq + PartialOrd + Ord> Struct<T> {
|
|
fn method(&self) {}
|
|
}
|
|
|
|
fn main() {
|
|
let point_f64 = Point { x: 1_f64, y: 1_f64 };
|
|
let d = point_f64.distance();
|
|
let point_i32 = Point { x: 1_i32, y: 1_i32 };
|
|
let d = point_i32.distance();
|
|
//~^ ERROR no method named `distance` found for struct `Point<i32>
|
|
let d = point_i32.other();
|
|
//~^ ERROR no method named `other` found for struct `Point
|
|
let v = vec![1, 2, 3];
|
|
v.iter().map(Box::new(|x| x * x) as Box<dyn Fn(&i32) -> i32>).extend(std::iter::once(100));
|
|
//~^ ERROR no method named `extend` found for struct `Map
|
|
let wrapper = Wrapper(true);
|
|
wrapper.method();
|
|
//~^ ERROR no method named `method` found for struct `Wrapper<bool>
|
|
wrapper.other();
|
|
//~^ ERROR no method named `other` found for struct `Wrapper
|
|
let boolean = true;
|
|
let wrapper = Wrapper2::<'_, _, 3> { x: &boolean };
|
|
wrapper.method();
|
|
//~^ ERROR no method named `method` found for struct `Wrapper2<'_, bool, 3>
|
|
wrapper.other();
|
|
//~^ ERROR no method named `other` found for struct `Wrapper2
|
|
let a = vec![1, 2, 3];
|
|
a.not_found();
|
|
//~^ ERROR no method named `not_found` found for struct `Vec
|
|
let s = Struct::<f64>::default();
|
|
s.method();
|
|
//~^ ERROR the method `method` exists for struct `Struct<f64>`, but its trait bounds were not satisfied
|
|
}
|