File: no-patterns-in-args-macro.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 (26 lines) | stat: -rw-r--r-- 513 bytes parent folder | download | duplicates (27) 
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
 
macro_rules! m {
    ($pat: pat) => {
        trait Tr {
            fn trait_method($pat: u8);
        }

        type A = fn($pat: u8);

        extern "C" {
            fn foreign_fn($pat: u8);
        }
    };
}

mod good_pat {
    m!(good_pat); // OK
}

mod bad_pat {
    m!((bad, pat));
    //~^ ERROR patterns aren't allowed in function pointer types
    //~| ERROR patterns aren't allowed in foreign function declarations
    //~| ERROR patterns aren't allowed in functions without bodies
}

fn main() {}