tests/ui/proc-macro/auxiliary/derive-union.rs

   1 // force-host
   2 // no-prefer-dynamic
   3
   4 #![crate_type = "proc-macro"]
   5
   6 extern crate proc_macro;
   7
   8 use proc_macro::TokenStream;
   9
  10 #[proc_macro_derive(UnionTest)]
  11 pub fn derive(input: TokenStream) -> TokenStream {
  12     let input = input.to_string();
  13     assert!(input.contains("#[repr(C)]"));
  14     assert!(input.contains("union Test {"));
  15     assert!(input.contains("a : u8,"));
  16     assert!(input.contains("}"));
  17     "".parse().unwrap()
  18 }