File: expect-future_breakage-crash-issue-126521.rs

package info (click to toggle)
rustc 1.88.0%2Bdfsg1-1
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid
  • size: 934,128 kB
  • sloc: xml: 158,127; python: 36,062; javascript: 19,855; sh: 19,700; cpp: 18,947; ansic: 12,993; asm: 4,792; makefile: 690; lisp: 29; perl: 29; ruby: 19; sql: 11
file content (38 lines) | stat: -rw-r--r-- 885 bytes parent folder | download | duplicates (14)
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
31
32
33
34
35
36
37
38
//@ check-pass

// This test covers similar crashes from both #126521 and #126751.

macro_rules! foo {
    ($val:ident) => {
        true;
    };
}

macro_rules! bar {
    ($val:ident) => {
        (5_i32.overflowing_sub(3));
    };
}

fn allow() {
    #[allow(semicolon_in_expressions_from_macros)]
    let _ = foo!(x);

    #[allow(semicolon_in_expressions_from_macros)]
    let _ = bar!(x);
}

// The `semicolon_in_expressions_from_macros` lint seems to be emitted even if the
// lint level is `allow` as shown in the function above. The behavior of `expect`
// should mirror this behavior. However, no `unfulfilled_lint_expectation` lint
// is emitted, since the expectation is theoretically fulfilled.
fn expect() {
    #[expect(semicolon_in_expressions_from_macros)]
    let _ = foo!(x);

    #[expect(semicolon_in_expressions_from_macros)]
    let _ = bar!(x);
}

fn main() {
}