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 9694B3893C2C; Fri,  5 Mar 2021 13:37:56 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 9694B3893C2C
From: "iains at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug gcov-profile/99406] [11 regression] MAP_ANONYMOUS undeclared in
 libgcov.h
Date: Fri, 05 Mar 2021 13:37:56 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: gcov-profile
X-Bugzilla-Version: 11.0
X-Bugzilla-Keywords: 
X-Bugzilla-Severity: normal
X-Bugzilla-Who: iains 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: 11.0
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-99406-4-EudQnn8re4@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-99406-4@http.gcc.gnu.org/bugzilla/>
References: <bug-99406-4@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
X-BeenThere: gcc-bugs@gcc.gnu.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Gcc-bugs mailing list <gcc-bugs.gcc.gnu.org>
List-Unsubscribe: <https://gcc.gnu.org/mailman/options/gcc-bugs>,
 <mailto:gcc-bugs-request@gcc.gnu.org?subject=unsubscribe>
List-Archive: <https://gcc.gnu.org/pipermail/gcc-bugs/>
List-Post: <mailto:gcc-bugs@gcc.gnu.org>
List-Help: <mailto:gcc-bugs-request@gcc.gnu.org?subject=help>
List-Subscribe: <https://gcc.gnu.org/mailman/listinfo/gcc-bugs>,
 <mailto:gcc-bugs-request@gcc.gnu.org?subject=subscribe>
X-List-Received-Date: Fri, 05 Mar 2021 13:37:56 -0000

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D99406

--- Comment #1 from Iain Sandoe <iains at gcc dot gnu.org> ---
(In reply to Rainer Orth from comment #0)
> The unconditional use of MAP_ANONYMOUS in libgcov.h broke Mac OS X
> 10.7/Darwin 11
> bootstrap:
>=20
> In file included from
> /vol/gcc/src/hg/master/darwin/libgcc/libgcov-merge.c:26:
> /vol/gcc/src/hg/master/darwin/libgcc/libgcov.h: In function 'malloc_mmap':
> In file included from
> /vol/gcc/src/hg/master/darwin/libgcc/libgcov-merge.c:26:
> /vol/gcc/src/hg/master/darwin/libgcc/libgcov.h: In function 'malloc_mmap':
> /vol/gcc/src/hg/master/darwin/libgcc/libgcov.h:420:30: error:
> 'MAP_ANONYMOUS' undeclared (first use in this function); did you mean
> 'MAP_ANON'?
>   420 |                MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
>       |                              ^~~~~~~~~~~~~
>       |                              MAP_ANON
> /vol/gcc/src/hg/master/darwin/libgcc/libgcov.h:420:30: note: each undecla=
red
> identifier is reported only once for each function it appears in
>=20
> I haven't checked which macOS version introduced MAP_ANONYMOUS as alias f=
or
> MAP_ANON, but macOS 11/Darwin 20 has it.

I think from darwin15 / macOS 10.11

/opt/iains/SDKs/darwin15/usr/include/sys/mman.h:#define MAP_ANONYMOUS=20=20
MAP_ANON
/opt/iains/SDKs/darwin16/usr/include/sys/mman.h:#define MAP_ANONYMOUS=20=20
MAP_ANON
/opt/iains/SDKs/darwin17/usr/include/sys/mman.h:#define MAP_ANONYMOUS=20=20
MAP_ANON
/opt/iains/SDKs/darwin18/usr/include/sys/mman.h:#define MAP_ANONYMOUS=20=20
MAP_ANON
/opt/iains/SDKs/darwin19/usr/include/sys/mman.h:#define MAP_ANONYMOUS=20=20
MAP_ANON=