From 8af9607d28c6ed31eaee942ea7fbbf8bceb95189 Mon Sep 17 00:00:00 2001
From: Shoyu Vanilla <modulo641@gmail.com>
Date: Tue, 12 Aug 2025 00:24:44 +0900
Subject: [PATCH] fix: Panic while trying to clear old diagnostics while
 there's nothing

---
 crates/rust-analyzer/src/diagnostics.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/crates/rust-analyzer/src/diagnostics.rs b/crates/rust-analyzer/src/diagnostics.rs
index 2711bdba69..30f530100f 100644
--- a/crates/rust-analyzer/src/diagnostics.rs
+++ b/crates/rust-analyzer/src/diagnostics.rs
@@ -105,7 +105,7 @@ impl DiagnosticCollection {
         flycheck_id: usize,
         generation: DiagnosticsGeneration,
     ) {
-        if self.check[flycheck_id].generation < generation {
+        if self.check.get(flycheck_id).is_some_and(|it| it.generation < generation) {
             self.clear_check(flycheck_id);
         }
     }