rust/tests/ui/attributes/unused-item-in-attr.stderr

error: attribute value must be a literal
  --> $DIR/unused-item-in-attr.rs:1:7
   |
LL | #[w = { extern crate alloc; }]
   |       ^^^^^^^^^^^^^^^^^^^^^^^

error: cannot find attribute `w` in this scope
  --> $DIR/unused-item-in-attr.rs:1:3
   |
LL | #[w = { extern crate alloc; }]
   |   ^

error: aborting due to 2 previous errors
Improve an error involving attribute values. Attribute values must be literals. The error you get when that doesn't hold is pretty bad, e.g.: ``` unexpected expression: 1 + 1 ``` You also get the same error if the attribute value is a literal, but an invalid literal, e.g.: ``` unexpected expression: "foo"suffix ``` This commit does two things. - Changes the error message to "attribute value must be a literal", which gives a better idea of what the problem is and how to fix it. It also no longer prints the invalid expression, because the carets below highlight it anyway. - Separates the "not a literal" case from the "invalid literal" case. Which means invalid literals now get the specific error at the literal level, rather than at the attribute level. 2023-12-11 22:55:50 +00:00			`error: attribute value must be a literal`
Remove useless filter in unused extern crate check. 2022-12-03 09:23:03 +00:00			`--> $DIR/unused-item-in-attr.rs:1:7`
			`\|`
			`LL \| #[w = { extern crate alloc; }]`
			`\| ^^^^^^^^^^^^^^^^^^^^^^^`

			error: cannot find attribute `w` in this scope
			`--> $DIR/unused-item-in-attr.rs:1:3`
			`\|`
			`LL \| #[w = { extern crate alloc; }]`
			`\| ^`

			`error: aborting due to 2 previous errors`