[binutils-gdb] [gdb/build, clang] Fix ignored aligned attribute

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=8b752803cf57408cfb7a50bc77a3cbc658f7ad23

commit 8b752803cf57408cfb7a50bc77a3cbc658f7ad23
Author: Tom de Vries <[email protected]>
Date:   Fri Jun 12 12:41:08 2026 +0200

    [gdb/build, clang] Fix ignored aligned attribute
    
    PR build/34279 reports a build failure with clang.
    
    This is a regression since commit 6c85ef111b0 ("[gdb] Use using instead of
    typedef"), which did:
    ...
    -typedef long __attribute__ ((__aligned__ (4))) compat_x32_clock_t;
    +using compat_x32_clock_t = long __attribute__ ((__aligned__ (4)));
    ...
    
    The problem is that clang ignores the attribute.
    
    Fix this by reverting this part of the commit.
    
    Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=34279

Diff:
---
 gdb/nat/amd64-linux-siginfo.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gdb/nat/amd64-linux-siginfo.c b/gdb/nat/amd64-linux-siginfo.c
index 8f1e4acc47e..99faccabf37 100644
--- a/gdb/nat/amd64-linux-siginfo.c
+++ b/gdb/nat/amd64-linux-siginfo.c
@@ -203,7 +203,7 @@ struct compat_siginfo_t
 };
 
 /* For x32, clock_t in _sigchld is 64bit aligned at 4 bytes.  */
-using compat_x32_clock_t = long __attribute__ ((__aligned__ (4)));
+typedef long __attribute__ ((__aligned__ (4))) compat_x32_clock_t;
 
 struct __attribute__ ((__aligned__ (8))) compat_x32_siginfo_t
 {