From f41fa64f97d91f3256b6c69b998705a737cf7edd Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Eduardo=20S=C3=A1nchez=20Mu=C3=B1oz?= <eduardosm-dev@e64.io>
Date: Fri, 2 Jan 2026 21:18:51 +0100
Subject: [PATCH] Change `repr(packed)` struct to `repr(C, packed)`

`repr(packed)` structs do not have a well-defined layout
---
 library/stdarch/crates/core_arch/src/x86_64/amx.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/library/stdarch/crates/core_arch/src/x86_64/amx.rs b/library/stdarch/crates/core_arch/src/x86_64/amx.rs
index 3e0ac8f47cea..f372f7066d51 100644
--- a/library/stdarch/crates/core_arch/src/x86_64/amx.rs
+++ b/library/stdarch/crates/core_arch/src/x86_64/amx.rs
@@ -510,7 +510,7 @@ mod tests {
     use syscalls::{Sysno, syscall};
 
     #[allow(non_camel_case_types)]
-    #[repr(packed)]
+    #[repr(C, packed)]
     #[derive(Copy, Clone, Default, Debug, PartialEq)]
     struct __tilecfg {
         /// 0 `or` 1