| // run-pass |
| |
| #![feature(const_fn)] |
| #![feature(const_type_name)] |
| #![allow(dead_code)] |
| |
| const fn type_name_wrapper<T>(_: &T) -> &'static str { |
| std::any::type_name::<T>() |
| } |
| |
| struct Struct<TA, TB, TC> { |
| a: TA, |
| b: TB, |
| c: TC, |
| } |
| |
| type StructInstantiation = Struct<i8, f64, bool>; |
| |
| const CONST_STRUCT: StructInstantiation = StructInstantiation { a: 12, b: 13.7, c: false }; |
| |
| const CONST_STRUCT_NAME: &'static str = type_name_wrapper(&CONST_STRUCT); |
| |
| fn main() { |
| let non_const_struct = StructInstantiation { a: 87, b: 65.99, c: true }; |
| |
| let non_const_struct_name = type_name_wrapper(&non_const_struct); |
| |
| assert_eq!(CONST_STRUCT_NAME, non_const_struct_name); |
| } |