File: issue-34796.rs

package info (click to toggle)
rustc-web 1.78.0%2Bdfsg1-2~deb11u3
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 1,245,360 kB
  • sloc: xml: 147,985; javascript: 18,022; sh: 11,083; python: 10,265; ansic: 6,172; cpp: 5,023; asm: 4,390; makefile: 4,269
file content (28 lines) | stat: -rw-r--r-- 812 bytes parent folder | download | duplicates (10)
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
27
28
//@ run-pass
#![allow(dead_code)]
// This test case exposes conditions where the encoding of a trait object type
// with projection predicates would differ between this crate and the upstream
// crate, because the predicates were encoded in different order within each
// crate. This led to different symbol hashes of functions using these type,
// which in turn led to linker errors because the two crates would not agree on
// the symbol name.
// The fix was to make the order in which predicates get encoded stable.

//@ aux-build:issue-34796-aux.rs
extern crate issue_34796_aux;

fn mk<T>() -> T { loop {} }

struct Data<T, E> {
    data: T,
    error: E,
}

fn main() {
    issue_34796_aux::bar(|()| {
        Data::<(), std::io::Error> {
            data: mk(),
            error: mk(),
        }
    })
}