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 918C73858CDA; Wed, 15 Nov 2023 00:57:25 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 918C73858CDA
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org;
	s=default; t=1700009845;
	bh=Z9nNK9APodEwk/S1zp6Dj7oow8Rxh3Nyv13ebtN+Xzs=;
	h=From:To:Subject:Date:In-Reply-To:References:From;
	b=VLn6wksL6MyEY4Ga8QTWSHrPKqzK/q5/el62T3cFAgG3bDRtECBEBlVkHlKwLLbwA
	 oMFAEluPTl/s73qSHjrOSlm+/htmDd7ruz+gUVxfeKrF3xrFK/bUtXgCx1msllnTEc
	 DUf0gUKFwJq6M8O9b0JOClTdCBZyIS1dIt3ZP+vc=
From: "bruno at clisp dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug bootstrap/112534] [14 regression] build failure after
 r14-5424-gdb50aea6259545 using gcc 4.8.5
Date: Wed, 15 Nov 2023 00:57:24 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: bootstrap
X-Bugzilla-Version: 14.0
X-Bugzilla-Keywords: 
X-Bugzilla-Severity: normal
X-Bugzilla-Who: bruno at clisp dot 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: cc
Message-ID: <bug-112534-4-Re9pLB8XCf@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-112534-4@http.gcc.gnu.org/bugzilla/>
References: <bug-112534-4@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=3D112534

Bruno Haible <bruno at clisp dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |bruno at clisp dot org

--- Comment #2 from Bruno Haible <bruno at clisp dot org> ---
> gcc version 4.8.5 20150623 (Red Hat 4.8.5-44) (GCC)=20
> gcc -std=3Dgnu99 ...
> error: unknown type name 'max_align_t'

The type 'max_align_t' exists in C11, but not in C99, as can be seen from t=
hese
uses of gcc 4.8.5:
$ cat foo.c
#include <stddef.h>
max_align_t x;
$ gcc -std=3Dc11 -c foo.c
$ gcc -std=3Dgnu11 -c foo.c
$ gcc -std=3Dc99 -c foo.c
foo.c:2:1: error: unknown type name =E2=80=98max_align_t=E2=80=99
 max_align_t x;
 ^
$ gcc -std=3Dgnu99 -c foo.c
foo.c:2:1: error: unknown type name =E2=80=98max_align_t=E2=80=99
 max_align_t x;
 ^

But this occurs in the build tree of gettext-runtime, and this package uses
AC_PROG_CC, which adds option -std=3Dgnu11 if supported (this is in GNU Aut=
oconf
since version 2.70).

Maybe some configure file was built with Autoconf 2.69 and older and thus d=
oes
not add -std=3Dgnu11 ?

Or some other configure in the build tree has determined CC=3D"gcc -std=3Dg=
nu99",
and this setting has been propagated into gettext-runtime, overriding the
findings from gettext-runtime/configure ?=