From 98d97b7323a55fce821bab6606bf216dbb97523a Mon Sep 17 00:00:00 2001
From: Nicholas Nethercote <n.nethercote@gmail.com>
Date: Wed, 20 Sep 2023 07:45:46 +1000
Subject: [PATCH] Use `Layout::new` consistently in `DroplessArena::alloc`.

---
 compiler/rustc_arena/src/lib.rs | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/compiler/rustc_arena/src/lib.rs b/compiler/rustc_arena/src/lib.rs
index 5c183afc087..d793158d85f 100644
--- a/compiler/rustc_arena/src/lib.rs
+++ b/compiler/rustc_arena/src/lib.rs
@@ -501,12 +501,13 @@ pub fn alloc<T>(&self, object: T) -> &mut T {
         assert!(!mem::needs_drop::<T>());
         assert!(mem::size_of::<T>() != 0);
 
-        let mem = if let Some(a) = self.alloc_raw_without_grow(Layout::for_value::<T>(&object)) {
+        let layout = Layout::new::<T>();
+        let mem = if let Some(a) = self.alloc_raw_without_grow(layout) {
             a
         } else {
             // No free space left. Allocate a new chunk to satisfy the request.
             // On failure the grow will panic or abort.
-            self.grow_and_alloc_raw(Layout::new::<T>())
+            self.grow_and_alloc_raw(layout)
         } as *mut T;
 
         unsafe {