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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.
9 lines
206 B
Plaintext
9 lines
206 B
Plaintext
error: attribute value must be a literal
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--> $DIR/key-value-expansion-on-mac.rs:11:17
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LL | #[rustc_dummy = stringify!(b)]
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| ^^^^^^^^^^^^^
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error: aborting due to 1 previous error
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