bjoernager/rust
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Various diagnostics clean ups/tweaks

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* Always point at macros, including derive macros
* Point at non-local items that introduce a trait requirement
* On private associated item, point at definition
This commit is contained in:
Esteban Küber 2021-07-17 11:13:50 -07:00
parent c78ebb7bdc
commit ba052bd8de
163 changed files with 1474 additions and 398 deletions
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5
compiler/rustc_builtin_macros/src/derive.rs
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@ -84,8 +84,10 @@ fn report_bad_target(sess: &Session, item: &Annotatable, span: Span) -> bool {
sess,
span,
E0774,
"`derive` may only be applied to structs, enums and unions",
"`derive` may only be applied to `struct`s, `enum`s and `union`s",
)
.span_label(span, "not applicable here")
.span_label(item.span(), "not a `struct`, `enum` or `union`")
.emit();
}
bad_target
@ -99,6 +101,7 @@ fn report_unexpected_literal(sess: &Session, lit: &ast::Lit) {
_ => "for example, write `#[derive(Debug)]` for `Debug`".to_string(),
};
struct_span_err!(sess, lit.span, E0777, "expected path to a trait, found literal",)
.span_label(lit.span, "not a trait")
.help(&help_msg)
.emit();
}