File: projection-discr-kind.rs

package info (click to toggle)
rustc 1.85.0%2Bdfsg2-3
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 893,176 kB
  • sloc: xml: 158,127; python: 35,830; javascript: 19,497; cpp: 19,002; sh: 17,245; ansic: 13,127; asm: 4,376; makefile: 1,051; lisp: 29; perl: 29; ruby: 19; sql: 11
file content (18 lines) | stat: -rw-r--r-- 407 bytes parent folder | download | duplicates (6) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
 
//@ compile-flags: -Znext-solver

// Check that `<T::Assoc as DiscriminantKind>::Discriminant` doesn't normalize
// to itself and cause overflow/ambiguity.

trait Foo {
    type Assoc;
}

trait Bar {}
fn needs_bar(_: impl Bar) {}

fn foo<T: Foo>(x: T::Assoc) {
    needs_bar(std::mem::discriminant(&x));
    //~^ ERROR the trait bound `Discriminant<<T as Foo>::Assoc>: Bar` is not satisfied
}

fn main() {}