compiler/rustc_infer/src/errors.rs


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use rustc_macros::Diagnostic;
use rustc_span::Span;

#[derive(Diagnostic)]
#[diag(infer_opaque_hidden_type)]
pub(crate) struct OpaqueHiddenTypeDiag {
    #[primary_span]
    #[label]
    pub span: Span,
    #[note(infer_opaque_type)]
    pub opaque_type: Span,
    #[note(infer_hidden_type)]
    pub hidden_type: Span,
}