File: const-param-placeholder.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 (21 lines) | stat: -rw-r--r-- 402 bytes parent folder | download | duplicates (6) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
 
//@ compile-flags: -Znext-solver
//@ revisions: pass fail
//@[pass] check-pass

struct Wrapper<T, const N: usize>([T; N]);

trait Foo {}
fn needs_foo<F: Foo>() {}

#[cfg(fail)]
impl<T> Foo for [T; 1] {}

#[cfg(pass)]
impl<T, const N: usize> Foo for [T; N] {}

fn test<T, const N: usize>() {
    needs_foo::<[T; N]>();
    //[fail]~^ ERROR the trait bound `[T; N]: Foo` is not satisfied
}

fn main() {}