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From: "vries at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug testsuite/29240] [gcc 4.8, m32] FAIL: gdb.base/align-c.exp:
 print _Alignof(long long)
Date: Sat, 11 Jun 2022 15:25:43 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D29240

--- Comment #1 from Tom de Vries <vries at gcc dot gnu.org> ---
(In reply to Tom de Vries from comment #0)
> This looks like https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D69560 , wh=
ich
> was fixed in gcc 8.1.0.  Curious that I don't run into it with system gcc
> 7.5.0, but perhaps it was backported in the package.

A standalone reproducer:
...
$ cat align.c
#include <stdio.h>

unsigned a_long_long
  =3D _Alignof (long long);

int
main ()
{
  printf ("%d\n", a_long_long);
  return 0;
}
...

Fails with gcc 4.8 (prints 8):
...
$ gcc-4.8 align.c -m32 && ./a.out
8
...

Passes with system gcc 7.5.0 (prints 4):
...
$ gcc align.c -m32 && ./a.out
4
...


Also passes (prints 4) with a regular gcc 7.5.0 build:
...
$ ./install/bin/gcc /home/vries/gdb_versions/devel/align.c -m32
$ ./a.out=20
4
....
so this is not related to the package.

--=20
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