[rustc.git] / src / librustc_error_codes / error_codes / E0565.md

A literal was used in a built-in attribute that doesn't support literals.

Erroneous code example:

```compile_fail,E0565
#[repr("C")] // error: meta item in `repr` must be an identifier
struct Repr {}

fn main() {}
```

Literals in attributes are new and largely unsupported in built-in attributes.
Work to support literals where appropriate is ongoing. Try using an unquoted
name instead:

```
#[repr(C)] // ok!
struct Repr {}

fn main() {}
```
Commit	Line	Data
60c5eb7d XL	1	A literal was used in a built-in attribute that doesn't support literals.
	2
	3	Erroneous code example:
	4
74b04a01 XL	5	```compile_fail,E0565
	6	#[repr("C")] // error: meta item in `repr` must be an identifier
	7	struct Repr {}
	8
	9	fn main() {}
60c5eb7d XL	10	```
	11
	12	Literals in attributes are new and largely unsupported in built-in attributes.
	13	Work to support literals where appropriate is ongoing. Try using an unquoted
	14	name instead:
	15
	16	```
74b04a01 XL	17	#[repr(C)] // ok!
	18	struct Repr {}
	19
	20	fn main() {}
60c5eb7d	21	```