src/test/ui/intrinsics/const-eval-select-stability.rs

   1 #![feature(staged_api)]
   2 #![feature(const_eval_select)]
   3 #![feature(core_intrinsics)]
   4 #![stable(since = "1.0", feature = "ui_test")]
   5
   6 use std::intrinsics::const_eval_select;
   7
   8 fn log() {
   9     println!("HEY HEY HEY")
  10 }
  11
  12 const fn nothing(){}
  13
  14 #[stable(since = "1.0", feature = "hey")]
  15 #[rustc_const_stable(since = "1.0", feature = "const_hey")]
  16 pub const unsafe fn hey() {
  17     const_eval_select((), nothing, log);
  18     //~^ ERROR `const_eval_select` is not yet stable as a const fn
  19 }
  20
  21 fn main() {}