From e7b5730d36740035b9cf58b759be87d0d88515a7 Mon Sep 17 00:00:00 2001
From: joboet <jonasboettiger@icloud.com>
Date: Tue, 2 Apr 2024 11:27:34 +0200
Subject: [PATCH] std: reduce code size of `set_current`

---
 library/std/src/thread/mod.rs | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/library/std/src/thread/mod.rs b/library/std/src/thread/mod.rs
index f7eb92bc61e2f..a97122ca12034 100644
--- a/library/std/src/thread/mod.rs
+++ b/library/std/src/thread/mod.rs
@@ -684,9 +684,12 @@ thread_local! {
 
 /// Sets the thread handle for the current thread.
 ///
-/// Panics if the handle has been set already or when called from a TLS destructor.
+/// Aborts if the handle has been set already to reduce code size.
 pub(crate) fn set_current(thread: Thread) {
-    CURRENT.with(|current| current.set(thread).unwrap());
+    CURRENT.with(|current| match current.set(thread) {
+        Ok(()) => {}
+        Err(_) => rtabort!("should only be set once"),
+    });
 }
 
 /// Gets a handle to the thread that invokes it.