src/test/ui/enum-discriminant/issue-70453-generics-in-discr-ice-2.rs

   1 #![feature(core_intrinsics)]
   2
   3 extern crate core;
   4 use core::intrinsics::discriminant_value;
   5
   6 #[repr(usize)]
   7 enum MyWeirdOption<T> {
   8     None = 0,
   9     Some(T) = std::mem::size_of::<T>(),
  10     //~^ ERROR generic parameters may not be used in const operations
  11 }
  12
  13 fn main() {
  14     assert_eq!(discriminant_value(&MyWeirdOption::<u8>::None), 0);
  15     assert_eq!(discriminant_value(&MyWeirdOption::Some(0u8)), 1);
  16 }