File: hrtb-malformed-lifetime-generics.rs

package info (click to toggle)
rustc 1.85.0%2Bdfsg3-1
  • links: PTS, VCS
  • area: main
  • in suites: experimental, forky, sid, trixie
  • size: 893,396 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; perl: 29; lisp: 29; ruby: 19; sql: 11
file content (20 lines) | stat: -rw-r--r-- 747 bytes parent folder | download | duplicates (9)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
// Test that Fn-family traits with lifetime parameters shouldn't compile and
// we suggest the usage of higher-rank trait bounds instead.

fn fa(_: impl Fn<'a>(&'a str) -> bool) {}
//~^ ERROR `Fn` traits cannot take lifetime parameters

fn fb(_: impl FnMut<'a, 'b>(&'a str, &'b str) -> bool) {}
//~^ ERROR `Fn` traits cannot take lifetime parameters

fn fc(_: impl std::fmt::Display + FnOnce<'a>(&'a str) -> bool + std::fmt::Debug) {}
//~^ ERROR `Fn` traits cannot take lifetime parameters

use std::ops::Fn as AliasedFn;
fn fd(_: impl AliasedFn<'a>(&'a str) -> bool) {}
//~^ ERROR `Fn` traits cannot take lifetime parameters

fn fe<F>(_: F) where F: Fn<'a>(&'a str) -> bool {}
//~^ ERROR `Fn` traits cannot take lifetime parameters

fn main() {}