src/test/ui/const-generics/wf-misc.rs

   1 // Tests miscellaneous well-formedness examples.
   2 // revisions: full min
   3
   4 #![cfg_attr(full, feature(const_generics))]
   5 #![cfg_attr(full, allow(incomplete_features))]
   6 #![cfg_attr(min, feature(min_const_generics))]
   7
   8 pub fn arr_len<const N: usize>() {
   9     let _: [u8; N + 1];
  10     //[full]~^ ERROR constant expression depends on a generic parameter
  11     //[min]~^^ ERROR generic parameters may not be used in const operations
  12 }
  13
  14 struct Const<const N: usize>;
  15
  16 pub fn func_call<const N: usize>() {
  17     let _: Const::<{N + 1}>;
  18     //[full]~^ ERROR constant expression depends on a generic parameter
  19     //[min]~^^ ERROR generic parameters may not be used in const operations
  20 }
  21
  22 fn main() {}