From 273b54d6ac8deb304b337b00483ad06193c1146a Mon Sep 17 00:00:00 2001
From: Camille GILLOT <gillot.camille@gmail.com>
Date: Sat, 10 Sep 2022 10:16:27 +0200
Subject: [PATCH] Add FIXME.

---
 compiler/rustc_lint/src/levels.rs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/compiler/rustc_lint/src/levels.rs b/compiler/rustc_lint/src/levels.rs
index 99c92567344..cfec4b23f38 100644
--- a/compiler/rustc_lint/src/levels.rs
+++ b/compiler/rustc_lint/src/levels.rs
@@ -911,6 +911,8 @@ impl<'s, P: LintLevelsProvider> LintLevelsBuilder<'s, P> {
     /// Checks if the lint is gated on a feature that is not enabled.
     ///
     /// Returns `true` if the lint's feature is enabled.
+    // FIXME only emit this once for each attribute, instead of repeating it 4 times for
+    // pre-expansion lints, post-expansion lints, `shallow_lint_levels_on` and `lint_expectations`.
     fn check_gated_lint(&self, lint_id: LintId, span: Span) -> bool {
         if let Some(feature) = lint_id.lint.feature_gate {
             if !self.sess.features_untracked().enabled(feature) {