File: wf-normalization-sized.rs

package info (click to toggle)
rustc 1.85.0%2Bdfsg2-3
  • links: PTS, VCS
  • area: main
  • in suites: forky, 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 (26 lines) | stat: -rw-r--r-- 1,008 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
26
//@ revisions: current next
//@[next] compile-flags: -Znext-solver
//@ ignore-compare-mode-next-solver (explicit revisions)
//@[current] check-pass
//@[current] known-bug: #100041

// Should fail. Normalization can bypass well-formedness checking.
// `[[[[[[u8]]]]]]` is not a well-formed type since size of type `[u8]` cannot
// be known at compile time (since `Sized` is not implemented for `[u8]`).

trait WellUnformed {
    type RequestNormalize;
}

impl<T: ?Sized> WellUnformed for T {
    type RequestNormalize = ();
}

const _: <[[[[[[u8]]]]]] as WellUnformed>::RequestNormalize = ();
//[next]~^ the size for values of type `[[[[[u8]]]]]` cannot be known at compilation time
//[next]~| the size for values of type `[[[[[u8]]]]]` cannot be known at compilation time
const _: <Vec<str> as WellUnformed>::RequestNormalize = ();
//[next]~^ the size for values of type `str` cannot be known at compilation time
//[next]~| the size for values of type `str` cannot be known at compilation time

fn main() {}