File: illegal-proc-macro-derive-use.rs

package info (click to toggle)
rustc-web 1.78.0%2Bdfsg1-2~deb12u3
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,245,420 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 (15 lines) | stat: -rw-r--r-- 355 bytes parent folder | download | duplicates (18) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
 
extern crate proc_macro;

#[proc_macro_derive(Foo)]
//~^ ERROR: only usable with crates of the `proc-macro` crate type
pub fn foo(a: proc_macro::TokenStream) -> proc_macro::TokenStream {
    a
}

// Issue #37590
#[proc_macro_derive(Foo)]
//~^ ERROR: the `#[proc_macro_derive]` attribute may only be used on bare functions
pub struct Foo {
}

fn main() {}