File: macro-context.rs

package info (click to toggle)
rustc-web 1.85.0%2Bdfsg3-1~deb12u3
  • links: PTS, VCS
  • area: main
  • in suites: bookworm, bookworm-proposed-updates
  • size: 1,759,988 kB
  • sloc: xml: 158,127; python: 35,830; javascript: 19,497; cpp: 19,002; sh: 17,245; ansic: 13,127; asm: 4,376; makefile: 1,056; lisp: 29; perl: 29; ruby: 19; sql: 11
file content (21 lines) | stat: -rw-r--r-- 793 bytes parent folder | download | duplicates (15)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
// (typeof used because it's surprisingly hard to find an unparsed token after a stmt)
macro_rules! m {
    () => ( i ; typeof );   //~ ERROR expected expression, found reserved keyword `typeof`
                            //~| ERROR macro expansion ignores reserved keyword `typeof`
                            //~| ERROR macro expansion ignores `;`
                            //~| ERROR macro expansion ignores `;`
                            //~| ERROR cannot find type `i` in this scope
                            //~| ERROR cannot find value `i` in this scope
                            //~| WARN trailing semicolon in macro
                            //~| WARN this was previously
}

fn main() {
    let a: m!();
    let i = m!();
    match 0 {
        m!() => {}
    }

    m!();
}