src/test/ui/consts/const-fn-type-name-any.rs

   1 // run-pass
   2
   3 #![feature(const_type_name)]
   4 #![allow(dead_code)]
   5
   6 const fn type_name_wrapper<T>(_: &T) -> &'static str {
   7     std::any::type_name::<T>()
   8 }
   9
  10 struct Struct<TA, TB, TC> {
  11     a: TA,
  12     b: TB,
  13     c: TC,
  14 }
  15
  16 type StructInstantiation = Struct<i8, f64, bool>;
  17
  18 const CONST_STRUCT: StructInstantiation = StructInstantiation { a: 12, b: 13.7, c: false };
  19
  20 const CONST_STRUCT_NAME: &'static str = type_name_wrapper(&CONST_STRUCT);
  21
  22 fn main() {
  23     let non_const_struct = StructInstantiation { a: 87, b: 65.99, c: true };
  24
  25     let non_const_struct_name = type_name_wrapper(&non_const_struct);
  26
  27     assert_eq!(CONST_STRUCT_NAME, non_const_struct_name);
  28 }