[rustc.git] / src / librustc_error_codes / error_codes / E0770.md

The type of a const parameter references other generic parameters.

Erroneous code example:

```compile_fail,E0770
#![feature(const_generics)]
fn foo<T, const N: T>() {} // error!
```

To fix this error, use a concrete type for the const parameter:

```
#![feature(const_generics)]
fn foo<T, const N: usize>() {}
```
Commit	Line	Data
3dfed10e XL	1	The type of a const parameter references other generic parameters.
	2
	3	Erroneous code example:
	4
	5	```compile_fail,E0770
	6	#![feature(const_generics)]
	7	fn foo<T, const N: T>() {} // error!
	8	```
	9
	10	To fix this error, use a concrete type for the const parameter:
	11
	12	```
	13	#![feature(const_generics)]
	14	fn foo<T, const N: usize>() {}
	15	```