From d84be7571f13ca31ae38b0de245ef7457147fc6c Mon Sep 17 00:00:00 2001
From: "Ibuki.O" <isan.ethen@gmail.com>
Date: Sun, 5 Jul 2026 11:18:25 +0900
Subject: [PATCH] fix: Always increment active_count in override_at to ensure
 synchronization

---
 redox-rt/src/sys.rs | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/redox-rt/src/sys.rs b/redox-rt/src/sys.rs
index 683b3ccaea..c4abafa8ae 100644
--- a/redox-rt/src/sys.rs
+++ b/redox-rt/src/sys.rs
@@ -1079,7 +1079,7 @@ impl FdTbl {
     }
 
     pub fn override_at(&mut self, fd: usize, new_fd: usize) -> Result<usize> {
-        let existed = self.remove(new_fd).is_ok();
+        let _ = self.remove(new_fd);
 
         if Self::is_upper(new_fd) {
             let handle = Self::strip_tags(new_fd);
@@ -1096,9 +1096,7 @@ impl FdTbl {
             )?;
         }
 
-        if !existed {
-            self.active_count += 1;
-        }
+        self.active_count += 1;
         Ok(new_fd)
     }
     pub fn add_posix(&mut self, entry: usize) -> Result<usize> {