From 8f4ebfd2f7f120e6f50448509496614d7008aef3 Mon Sep 17 00:00:00 2001
From: Tim Vilgot Mikael Fredenberg <26655508+vilgotf@users.noreply.github.com>
Date: Thu, 1 Jan 2026 22:18:29 +0100
Subject: [PATCH] signal: specialize unix `OsStorage` (#7818)

---
 tokio/src/signal/unix.rs | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/tokio/src/signal/unix.rs b/tokio/src/signal/unix.rs
index e70863b54..56bec97ff 100644
--- a/tokio/src/signal/unix.rs
+++ b/tokio/src/signal/unix.rs
@@ -18,21 +18,25 @@ use std::sync::atomic::{AtomicBool, Ordering};
 use std::sync::Once;
 use std::task::{Context, Poll};
 
+#[cfg(not(any(target_os = "linux", target_os = "illumos")))]
+pub(crate) type OsStorage = [SignalInfo; 34];
+
+#[cfg(any(target_os = "linux", target_os = "illumos"))]
 pub(crate) type OsStorage = Box<[SignalInfo]>;
 
 impl Init for OsStorage {
     fn init() -> Self {
         // There are reliable signals ranging from 1 to 33 available on every Unix platform.
         #[cfg(not(any(target_os = "linux", target_os = "illumos")))]
-        let possible = 0..=33;
+        return std::array::from_fn(|_| SignalInfo::default());
 
         // On Linux and illumos, there are additional real-time signals
         // available. (This is also likely true on Solaris, but this should be
         // verified before being enabled.)
         #[cfg(any(target_os = "linux", target_os = "illumos"))]
-        let possible = 0..=libc::SIGRTMAX();
-
-        possible.map(|_| SignalInfo::default()).collect()
+        return std::iter::repeat_with(SignalInfo::default)
+            .take(libc::SIGRTMAX() as usize + 1)
+            .collect();
     }
 }