From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugzilla@gcc.gnu.org>
Received: by sourceware.org (Postfix, from userid 48)
	id 9F9B73858D32; Tue, 16 Apr 2024 00:09:49 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 9F9B73858D32
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org;
	s=default; t=1713226189;
	bh=jGRFnDwdcEuA2GtnkMRs8Z17Ig9kVJJPLzQqEvkHCMo=;
	h=From:To:Subject:Date:From;
	b=oS1UfjzGO0cWO4uhzPkAPIg8UbrENsD3RAdx5IHS+qO2Qmkv//pOeSDIXLLE2hCyd
	 OZmCdmGLJgpN+/pyy+oOuQq4AlV516oRvEAKCloIbqyqUy996kdjwooAxbWnkFVp8y
	 2XZH3rei0o8Zn8fpDxOAAN4y3xky94APA6SDZbpE=
From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/114730] New: should enum types be vector types?
Date: Tue, 16 Apr 2024 00:09:49 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: new
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: c
X-Bugzilla-Version: 14.0
X-Bugzilla-Keywords: documentation
X-Bugzilla-Severity: normal
X-Bugzilla-Who: pinskia at gcc dot gnu.org
X-Bugzilla-Status: UNCONFIRMED
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P3
X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org
X-Bugzilla-Target-Milestone: ---
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: bug_id short_desc product version bug_status
 keywords bug_severity priority component assigned_to reporter
 target_milestone
Message-ID: <bug-114730-4@http.gcc.gnu.org/bugzilla/>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/
Auto-Submitted: auto-generated
MIME-Version: 1.0
List-Id: <gcc-bugs.sourceware.org>

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D114730

            Bug ID: 114730
           Summary: should enum types be vector types?
           Product: gcc
           Version: 14.0
            Status: UNCONFIRMED
          Keywords: documentation
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: pinskia at gcc dot gnu.org
  Target Milestone: ---

Take this C23 code:
```
#define vect16 __attribute__((vector_size(16)))
enum   tt : long {enumv};
extern vect16 enum tt t;
```

Currently GCC accepts it while clang rejects it.

I can understand why we accept it but then if we change the underlying type=
 to
bool, we still accept it even though vector_size does not apply to bool typ=
es.

I was trying to improve the documentation in this area when I found it.

Note I filed https://github.com/llvm/llvm-project/issues/88817 for clang si=
de
of things.=