[rustc.git] / src / librustc_error_codes / error_codes / E0604.md

A cast to `char` was attempted on a type other than `u8`.

Erroneous code example:

```compile_fail,E0604
0u32 as char; // error: only `u8` can be cast as `char`, not `u32`
```

As the error message indicates, only `u8` can be cast into `char`. Example:

```
let c = 86u8 as char; // ok!
assert_eq!(c, 'V');
```

For more information about casts, take a look at the Type cast section in
[The Reference Book][1].

[1]: https://doc.rust-lang.org/reference/expressions/operator-expr.html#type-cast-expressions
Commit	Line	Data
60c5eb7d XL	1	A cast to `char` was attempted on a type other than `u8`.
	2
	3	Erroneous code example:
	4
	5	```compile_fail,E0604
	6	0u32 as char; // error: only `u8` can be cast as `char`, not `u32`
	7	```
	8
	9	As the error message indicates, only `u8` can be cast into `char`. Example:
	10
	11	```
	12	let c = 86u8 as char; // ok!
	13	assert_eq!(c, 'V');
	14	```
	15
	16	For more information about casts, take a look at the Type cast section in
	17	[The Reference Book][1].
	18
	19	[1]: https://doc.rust-lang.org/reference/expressions/operator-expr.html#type-cast-expressions