From 892f176d899dd218285d82489603fa700a1ed6f6 Mon Sep 17 00:00:00 2001
From: Daria Sukhonina <dariasukhonina@gmail.com>
Date: Thu, 23 Apr 2026 16:06:24 +0300
Subject: [PATCH] Const initialize `LOCK_LATCH` thread local

---
 compiler/rustc_thread_pool/src/latch.rs    | 2 +-
 compiler/rustc_thread_pool/src/registry.rs | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/compiler/rustc_thread_pool/src/latch.rs b/compiler/rustc_thread_pool/src/latch.rs
index 29c85146e4f17..da3937a5ff415 100644
--- a/compiler/rustc_thread_pool/src/latch.rs
+++ b/compiler/rustc_thread_pool/src/latch.rs
@@ -220,7 +220,7 @@ pub(super) struct LockLatch {
 
 impl LockLatch {
     #[inline]
-    pub(super) fn new() -> LockLatch {
+    pub(super) const fn new() -> LockLatch {
         LockLatch { m: Mutex::new(false), v: Condvar::new() }
     }
 
diff --git a/compiler/rustc_thread_pool/src/registry.rs b/compiler/rustc_thread_pool/src/registry.rs
index 92bb8961e7dfc..9510c1842f86a 100644
--- a/compiler/rustc_thread_pool/src/registry.rs
+++ b/compiler/rustc_thread_pool/src/registry.rs
@@ -524,7 +524,7 @@ impl Registry {
         OP: FnOnce(&WorkerThread, bool) -> R + Send,
         R: Send,
     {
-        thread_local!(static LOCK_LATCH: LockLatch = LockLatch::new());
+        thread_local!(static LOCK_LATCH: LockLatch = const { LockLatch::new() });
 
         LOCK_LATCH.with(|l| {
             // This thread isn't a member of *any* thread pool, so just block.