From 6072207a1151f212163e3c19d92ff4ea22f291b2 Mon Sep 17 00:00:00 2001
From: Jana Dönszelmann <jana@donsz.nl>
Date: Wed, 12 Feb 2025 13:59:08 +0100
Subject: introduce new lint infra

 lint on duplicates during attribute parsing
To do this we stuff them in the diagnostic context to be emitted after
hir is constructed
---
 compiler/rustc_attr_data_structures/src/lib.rs   |  2 ++
 compiler/rustc_attr_data_structures/src/lints.rs | 14 ++++++++++++++
 2 files changed, 16 insertions(+)
 create mode 100644 compiler/rustc_attr_data_structures/src/lints.rs

(limited to 'compiler/rustc_attr_data_structures')

diff --git a/compiler/rustc_attr_data_structures/src/lib.rs b/compiler/rustc_attr_data_structures/src/lib.rs
index dbfc95b047a..b0fc19d1cd7 100644
--- a/compiler/rustc_attr_data_structures/src/lib.rs
+++ b/compiler/rustc_attr_data_structures/src/lib.rs
@@ -8,6 +8,8 @@ mod attributes;
 mod stability;
 mod version;
 
+pub mod lints;
+
 use std::num::NonZero;
 
 pub use attributes::*;
diff --git a/compiler/rustc_attr_data_structures/src/lints.rs b/compiler/rustc_attr_data_structures/src/lints.rs
new file mode 100644
index 00000000000..7e3664b2263
--- /dev/null
+++ b/compiler/rustc_attr_data_structures/src/lints.rs
@@ -0,0 +1,14 @@
+use rustc_macros::HashStable_Generic;
+use rustc_span::Span;
+
+#[derive(Clone, Debug, HashStable_Generic)]
+pub struct AttributeLint<Id> {
+    pub id: Id,
+    pub span: Span,
+    pub kind: AttributeLintKind,
+}
+
+#[derive(Clone, Debug, HashStable_Generic)]
+pub enum AttributeLintKind {
+    UnusedDuplicate { this: Span, other: Span, warning: bool },
+}
-- 
cgit 1.4.1-3-g733a5