tests/ui/consts/auxiliary/external_macro.rs

   1 #![feature(allow_internal_unstable)]
   2
   3 // Macro to help ensure CONST_ERR lint errors
   4 // are not silenced in external macros.
   5 // https://github.com/rust-lang/rust/issues/65300
   6
   7 #[macro_export]
   8 #[allow_internal_unstable(type_ascription)]
   9 macro_rules! static_assert {
  10     ($test:expr) => {
  11         #[allow(dead_code)]
  12         const _: () = [()][!($test: bool) as usize];
  13     }
  14 }