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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.
11 lines
386 B
Rust
11 lines
386 B
Rust
#![l=|x|[b;x ]] //~ ERROR attribute value must be a literal
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//~^ ERROR cannot find attribute `l` in this scope
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// notice the space at the start,
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// we can't attach any attributes to this file because it needs to be at the start
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// this example has been slightly modified (adding ]] at the end), so that it actually works here
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// it still produces the same issue though
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fn main() {}
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