src/test/ui/feature-gates/feature-gate-c_variadic.stderr

   1 error[E0658]: C-variadic functions are unstable
   2   --> $DIR/feature-gate-c_variadic.rs:3:1
   3    |
   4 LL | pub unsafe extern "C" fn test(_: i32, ap: ...) { }
   5    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   6    |
   7    = note: see issue #44930 <https://github.com/rust-lang/rust/issues/44930> for more information
   8    = help: add `#![feature(c_variadic)]` to the crate attributes to enable
   9
  10 error: aborting due to previous error
  11
  12 For more information about this error, try `rustc --explain E0658`.