Merge pull request #21048 from A4-Tacks/no-mangle-static-no-incorrect-case

Fix hit incorrect_case on no_mangle static items

Author: ChayimFriedman2

crates/hir-ty/src/diagnostics/decl_check.rs

@@ -563,6 +563,10 @@ impl<'a> DeclValidator<'a> {
             cov_mark::hit!(extern_static_incorrect_case_ignored);
             return;
         }
+        if self.db.attrs(static_id.into()).by_key(sym::no_mangle).exists() {
+            cov_mark::hit!(no_mangle_static_incorrect_case_ignored);
+            return;
+        }
 
         self.create_incorrect_case_diagnostic_for_item_name(
             static_id,

crates/ide-diagnostics/src/handlers/incorrect_case.rs

@@ -439,10 +439,27 @@ fn f((_O): u8) {}
     #[test]
     fn ignores_no_mangle_items() {
         cov_mark::check!(extern_func_no_mangle_ignored);
+        cov_mark::check!(no_mangle_static_incorrect_case_ignored);
         check_diagnostics(
             r#"
 #[no_mangle]
 extern "C" fn NonSnakeCaseName(some_var: u8) -> u8;
+#[no_mangle]
+static lower_case: () = ();
+            "#,
+        );
+    }
+
+    #[test]
+    fn ignores_unsafe_no_mangle_items() {
+        cov_mark::check!(extern_func_no_mangle_ignored);
+        cov_mark::check!(no_mangle_static_incorrect_case_ignored);
+        check_diagnostics(
+            r#"
+#[unsafe(no_mangle)]
+extern "C" fn NonSnakeCaseName(some_var: u8) -> u8;
+#[unsafe(no_mangle)]
+static lower_case: () = ();
             "#,
         );
     }