File: amp-raw-without-mut-const-is-a-normal-borrow.rs

package info (click to toggle)
rustc 1.85.0%2Bdfsg3-1
  • links: PTS, VCS
  • area: main
  • in suites: experimental, 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 (30 lines) | stat: -rw-r--r-- 873 bytes parent folder | download | duplicates (3)
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
29
30
//! The token sequence `&raw` *only* starts a raw borrow expr if it's immediately
//! followed by either `const` or `mut`. If that's not the case, the `&` denotes
//! the start of a normal borrow expr where `raw` is interpreted as a regular
//! identifier and thus denotes the start of a path expr.
//!
//! This test ensures that we never commit too early/overzealously in the parser
//! when encountering the sequence `&raw` (even during parse error recovery) so
//! as not to regress preexisting code.

//@ check-pass

fn main() { // the odd formatting in here is intentional
    let raw = 0;
    let _ = &raw;

    let raw = 0;
    let local = 1;
    let _: i32 = &raw *local;

    let raw = |_| ();
    let local = [0];
    let () = &raw (local[0]);
}

macro_rules! check {
    ($e:expr) => { compile_error!("expr"); };
    (&raw $e:expr) => {};
}

check!(&raw local);