From 20431706a863f92cb37dc512fef6e48d192aaf2c Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 17 Apr 2024 14:11:38 +0200
Subject: Merging upstream version 1.66.0+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 vendor/rowan/src/cursor.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'vendor/rowan/src/cursor.rs')

diff --git a/vendor/rowan/src/cursor.rs b/vendor/rowan/src/cursor.rs
index 39b0c9624..671be2348 100644
--- a/vendor/rowan/src/cursor.rs
+++ b/vendor/rowan/src/cursor.rs
@@ -390,7 +390,7 @@ impl NodeData {
     }
     fn prev_sibling(&self) -> Option<SyntaxNode> {
         let mut rev_siblings = self.green_siblings().enumerate().rev();
-        let index = rev_siblings.len() - (self.index() as usize);
+        let index = rev_siblings.len().checked_sub(self.index() as usize + 1)?;
 
         rev_siblings.nth(index);
         rev_siblings.find_map(|(index, child)| {
-- 
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