From faf55f7020dbfdef6d29e0d29eadee9d60a522f5 Mon Sep 17 00:00:00 2001
From: Saran Tunyasuvunakool <stunya@google.com>
Date: Fri, 13 Feb 2026 11:42:57 -0800
Subject: [PATCH] Fix header_test.cc.

C++ standard says the argument to alignof must be a type. Clang and GCC are permissive but MSVC isn't.

PiperOrigin-RevId: 869823902
Change-Id: I7e113ce62a60cc9be499e8580846a5258deea001
---
 test/header_test.cc | 20 ++++++++++++--------
 1 file changed, 12 insertions(+), 8 deletions(-)

diff --git a/test/header_test.cc b/test/header_test.cc
index 0c6ba253..98cae8ca 100644
--- a/test/header_test.cc
+++ b/test/header_test.cc
@@ -344,25 +344,29 @@ TEST_F(HeaderTest, MjVisualFields) {
   static_assert(alignof(mjVisual) == alignof(ExpectedMjVisual));
 
   static_assert(sizeof(mjVisual::global) == sizeof(ExpectedMjVisual::global));
-  static_assert(alignof(mjVisual::global) == alignof(ExpectedMjVisual::global));
+  static_assert(alignof(decltype(mjVisual::global)) ==
+                alignof(decltype(ExpectedMjVisual::global)));
 
   static_assert(sizeof(mjVisual::quality) == sizeof(ExpectedMjVisual::quality));
-  static_assert(alignof(mjVisual::quality) ==
-                alignof(ExpectedMjVisual::quality));
+  static_assert(alignof(decltype(mjVisual::quality)) ==
+                alignof(decltype(ExpectedMjVisual::quality)));
 
   static_assert(sizeof(mjVisual::headlight) ==
                 sizeof(ExpectedMjVisual::headlight));
-  static_assert(alignof(mjVisual::headlight) ==
-                alignof(ExpectedMjVisual::headlight));
+  static_assert(alignof(decltype(mjVisual::headlight)) ==
+                alignof(decltype(ExpectedMjVisual::headlight)));
 
   static_assert(sizeof(mjVisual::map) == sizeof(ExpectedMjVisual::map));
-  static_assert(alignof(mjVisual::map) == alignof(ExpectedMjVisual::map));
+  static_assert(alignof(decltype(mjVisual::map)) ==
+                alignof(decltype(ExpectedMjVisual::map)));
 
   static_assert(sizeof(mjVisual::scale) == sizeof(ExpectedMjVisual::scale));
-  static_assert(alignof(mjVisual::scale) == alignof(ExpectedMjVisual::scale));
+  static_assert(alignof(decltype(mjVisual::scale)) ==
+                alignof(decltype(ExpectedMjVisual::scale)));
 
   static_assert(sizeof(mjVisual::rgba) == sizeof(ExpectedMjVisual::rgba));
-  static_assert(alignof(mjVisual::rgba) == alignof(ExpectedMjVisual::rgba));
+  static_assert(alignof(decltype(mjVisual::rgba)) ==
+                alignof(decltype(ExpectedMjVisual::rgba)));
 }
 
 TEST_F(HeaderTest, MjModelIntsOrdered) {