From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugs-return-381638-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 3708 invoked by alias); 28 Jan 2012 16:52:55 -0000
Received: (qmail 3620 invoked by uid 22791); 28 Jan 2012 16:52:54 -0000
X-SWARE-Spam-Status: No, hits=-2.9 required=5.0	tests=ALL_TRUSTED,AWL,BAYES_00
X-Spam-Check-By: sourceware.org
Received: from localhost (HELO gcc.gnu.org) (127.0.0.1)    by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Sat, 28 Jan 2012 16:52:41 +0000
From: "howarth at nitro dot med.uc.edu" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/51906] thread lock test failures on darwin11 under Xcode 4.2
Date: Sat, 28 Jan 2012 17:40:00 -0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: libstdc++
X-Bugzilla-Keywords:
X-Bugzilla-Severity: normal
X-Bugzilla-Who: howarth at nitro dot med.uc.edu
X-Bugzilla-Status: UNCONFIRMED
X-Bugzilla-Priority: P3
X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org
X-Bugzilla-Target-Milestone: ---
X-Bugzilla-Changed-Fields:
Message-ID: <bug-51906-4-3inrpRf0E3@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-51906-4@http.gcc.gnu.org/bugzilla/>
References: <bug-51906-4@http.gcc.gnu.org/bugzilla/>
X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/
Auto-Submitted: auto-generated
Content-Type: text/plain; charset="UTF-8"
MIME-Version: 1.0
Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm
Precedence: bulk
List-Id: <gcc-bugs.gcc.gnu.org>
List-Archive: <http://gcc.gnu.org/ml/gcc-bugs/>
List-Post: <mailto:gcc-bugs@gcc.gnu.org>
List-Help: <mailto:gcc-bugs-help@gcc.gnu.org>
Sender: gcc-bugs-owner@gcc.gnu.org
X-SW-Source: 2012-01/txt/msg03313.txt.bz2

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51906

--- Comment #12 from Jack Howarth <howarth at nitro dot med.uc.edu> 2012-01-28 16:52:24 UTC ---
The contents of 3.ii.diff seems to suggest that the problem is the fact that
Lion always defines _GTHREAD_RECURSIVE_MUTEX_INIT and this support is either
buggy on Lion or is exposing a libstdc++ mutex bug. This usage can be seen in
libstdc++-v3/include/mutex as....

#ifdef __GTHREAD_RECURSIVE_MUTEX_INIT
    __native_type  _M_mutex = __GTHREAD_RECURSIVE_MUTEX_INIT;

    __recursive_mutex_base() = default;
#else
    __native_type  _M_mutex;

    __recursive_mutex_base()
    {
      // XXX EAGAIN, ENOMEM, EPERM, EBUSY(may), EINVAL(may)
      __GTHREAD_RECURSIVE_MUTEX_INIT_FUNCTION(&_M_mutex);
    }

    ~__recursive_mutex_base()
    { _S_destroy(&_M_mutex); }

Note that if you compile 3.ii.lion_10.6 on SL, the same execution failure is
seen there.