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Add FIXME.
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@ -908,6 +908,8 @@ impl<'s, P: LintLevelsProvider> LintLevelsBuilder<'s, P> {
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/// Checks if the lint is gated on a feature that is not enabled.
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///
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/// Returns `true` if the lint's feature is enabled.
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// FIXME only emit this once for each attribute, instead of repeating it 4 times for
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// pre-expansion lints, post-expansion lints, `shallow_lint_levels_on` and `lint_expectations`.
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fn check_gated_lint(&self, lint_id: LintId, span: Span) -> bool {
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if let Some(feature) = lint_id.lint.feature_gate {
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if !self.sess.features_untracked().enabled(feature) {
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