File: associate-type-bound-normalization.rs

package info (click to toggle)
rustc-web 1.85.0%2Bdfsg3-1~deb12u3
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,759,988 kB
  • sloc: xml: 158,127; python: 35,830; javascript: 19,497; cpp: 19,002; sh: 17,245; ansic: 13,127; asm: 4,376; makefile: 1,056; lisp: 29; perl: 29; ruby: 19; sql: 11
file content (25 lines) | stat: -rw-r--r-- 538 bytes parent folder | download | duplicates (7)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
// Make sure that we normalize bounds on associated types before checking them
// as candidates.

//@ check-pass

trait Mul<T> {
    type Output;
}

trait Matrix: Mul<<Self as Matrix>::Row, Output = ()> {
    type Row;

    type Transpose: Matrix<Row = Self::Row>;
}

fn is_mul<S, T: Mul<S, Output = ()>>() {}

fn f<T: Matrix>() {
    // The unnormalized bound on `T::Transpose` is
    // `Mul<<T::Transpose as Matrix>::Row` which has to be normalized to be
    // equal to `T::Row`.
    is_mul::<T::Row, T::Transpose>();
}

fn main() {}