src/test/ui/const-generics/const_evaluatable_checked/fn_call.rs

   1 // run-pass
   2 #![feature(const_generics, const_evaluatable_checked)]
   3 #![allow(incomplete_features)]
   4
   5 const fn test_me<T>(a: usize, b: usize) -> usize {
   6     if a < b {
   7         std::mem::size_of::<T>()
   8     } else {
   9         usize::MAX
  10     }
  11 }
  12
  13 fn test_simple<T>() -> [u8; std::mem::size_of::<T>()]
  14 where
  15     [u8; std::mem::size_of::<T>()]: Sized,
  16 {
  17     [0; std::mem::size_of::<T>()]
  18 }
  19
  20 fn test_with_args<T, const N: usize>() -> [u8; test_me::<T>(N, N + 1) + N]
  21 where
  22     [u8; test_me::<T>(N, N + 1) + N]: Sized,
  23 {
  24     [0; test_me::<T>(N, N + 1) + N]
  25 }
  26
  27 fn main() {
  28     assert_eq!([0; 8], test_simple::<u64>());
  29     assert_eq!([0; 12], test_with_args::<u64, 4>());
  30 }