From 377f9f8de923cc79144bcd2d02ad3959ce0c7ee4 Mon Sep 17 00:00:00 2001
From: Alexandre Julliard <julliard@winehq.org>
Date: Mon, 15 Apr 2024 16:15:33 +0200
Subject: [PATCH] widl: Only pass power of 2 structures by value on x86-64.

---
 tools/widl/typegen.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/widl/typegen.c b/tools/widl/typegen.c
index 52874b717fe..86d4354573e 100644
--- a/tools/widl/typegen.c
+++ b/tools/widl/typegen.c
@@ -434,7 +434,7 @@ static unsigned int get_stack_size( const var_t *var, int *by_value )
         switch (target.cpu)
         {
         case CPU_x86_64:
-            by_val = (stack_size <= pointer_size);
+            by_val = (stack_size == 1 || stack_size == 2 || stack_size == 4 || stack_size == 8);
             break;
         case CPU_ARM64:
             by_val = (stack_size <= 2 * pointer_size);