[glibc] Update BAD_TYPECHECK to work on x86_64

[glibc] Update BAD_TYPECHECK to work on x86_64

[Samuel Thibault]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=5dd3bda59c2d9da138f0d98808d087cdb95cdc17

commit 5dd3bda59c2d9da138f0d98808d087cdb95cdc17
Author: Flavio Cruz <flaviocruz@gmail.com>
Date:   Sun Nov 5 23:13:32 2023 -0500

    Update BAD_TYPECHECK to work on x86_64
    
    Message-ID: <ZUhn7LOcgLOJjKZr@jupiter.tail36e24.ts.net>

Diff:
---
 sysdeps/mach/mach_rpc.h | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/sysdeps/mach/mach_rpc.h b/sysdeps/mach/mach_rpc.h
index 152f057ca7..ed81403be6 100644
--- a/sysdeps/mach/mach_rpc.h
+++ b/sysdeps/mach/mach_rpc.h
@@ -20,11 +20,8 @@
 
 /* Macro used by MIG to cleanly check the type.  */
 #define BAD_TYPECHECK(type, check) __glibc_unlikely (({	\
-  union { mach_msg_type_t t; uint32_t w; } _t, _c;	\
+  union { mach_msg_type_t t; uintptr_t w; } _t, _c;	\
   _t.t = *(type); _c.t = *(check);_t.w != _c.w; }))
 
-/* TODO: add this assertion for x86_64.  */
-#ifndef __x86_64__
-_Static_assert (sizeof (uint32_t) == sizeof (mach_msg_type_t),
-                "mach_msg_type_t needs to be the same size as uint32_t");
-#endif
+_Static_assert (sizeof (uintptr_t) == sizeof (mach_msg_type_t),
+                "mach_msg_type_t needs to be the same size as uintptr_t");