Merge ref 'a1dbb443527b' from rust-lang/rust

Pull recent changes from https://github.com/rust-lang/rust via Josh.

Upstream ref: a1dbb443527bd126452875eb5d5860c1d001d761
Filtered ref: c2339048a82c55166f9b9ee83fd618be252a6e23

This merge was created using https://github.com/rust-lang/josh-sync.

1 files changed, 8 insertions, 6 deletions

diff --git a/library/std/src/thread/mod.rs b/library/std/src/thread/mod.rs
index 292323d0118..b6059c28cec 100644
--- a/library/std/src/thread/mod.rs
+++ b/library/std/src/thread/mod.rs
@@ -1212,8 +1212,8 @@ impl ThreadId {
             panic!("failed to generate unique thread ID: bitspace exhausted")
         }
 
-        cfg_if::cfg_if! {
-            if #[cfg(target_has_atomic = "64")] {
+        cfg_select! {
+            target_has_atomic = "64" => {
                 use crate::sync::atomic::{Atomic, AtomicU64};
 
                 static COUNTER: Atomic<u64> = AtomicU64::new(0);
@@ -1229,7 +1229,8 @@ impl ThreadId {
                         Err(id) => last = id,
                     }
                 }
-            } else {
+            }
+            _ => {
                 use crate::sync::{Mutex, PoisonError};
 
                 static COUNTER: Mutex<u64> = Mutex::new(0);
@@ -1318,8 +1319,8 @@ use thread_name_string::ThreadNameString;
 /// Note however that this also means that the name reported in pre-main functions
 /// will be incorrect, but that's just something we have to live with.
 pub(crate) mod main_thread {
-    cfg_if::cfg_if! {
-        if #[cfg(target_has_atomic = "64")] {
+    cfg_select! {
+        target_has_atomic = "64" => {
             use super::ThreadId;
             use crate::sync::atomic::{Atomic, AtomicU64};
             use crate::sync::atomic::Ordering::Relaxed;
@@ -1335,7 +1336,8 @@ pub(crate) mod main_thread {
             pub(crate) unsafe fn set(id: ThreadId) {
                 MAIN.store(id.as_u64().get(), Relaxed)
             }
-        } else {
+        }
+        _ => {
             use super::ThreadId;
             use crate::mem::MaybeUninit;
             use crate::sync::atomic::{Atomic, AtomicBool};