From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugs-return-382619-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 14431 invoked by alias); 6 Feb 2012 00:07:44 -0000
Received: (qmail 14420 invoked by uid 22791); 6 Feb 2012 00:07:42 -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; Mon, 06 Feb 2012 00:07:30 +0000
From: "mikpe at it dot uu.se" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/52128] New: [4.7 regression] r183788 caused massive libstdc++ testsuite regression on i686-linux
Date: Mon, 06 Feb 2012 00:07:00 -0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: new
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: libstdc++
X-Bugzilla-Keywords:
X-Bugzilla-Severity: normal
X-Bugzilla-Who: mikpe at it dot uu.se
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-52128-4@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: 2012-02/txt/msg00553.txt.bz2

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52128

             Bug #: 52128
           Summary: [4.7 regression] r183788 caused massive libstdc++
                    testsuite regression on i686-linux
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: libstdc++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: mikpe@it.uu.se


When bootstrapping gcc-4.7-20120203 on i686-linux I got massive regressions in
the C++ and libstd++ test suites, gcc-4.7-20120128 was OK:

                === g++ Summary ===

-# of expected passes           45969
-# of expected failures         284
-# of unsupported tests         350
+# of expected passes           37467
+# of unexpected failures       4114
+# of expected failures         277
+# of unresolved testcases      111
+# of unsupported tests         419

                === libgomp Summary ===

-# of expected passes           2948
+# of expected passes           289
+# of unexpected failures       477

                === libstdc++ Summary ===

-# of expected passes           8826
-# of unexpected failures       6
-# of expected failures         44
-# of unsupported tests         143
+# of expected passes           2269
+# of unexpected failures       2668
+# of expected failures         5
+# of unsupported tests         561

Bisection identified r183788 as the cause:

Author: redi
Date: Wed Feb  1 00:20:08 2012
New Revision: 183788

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=183788
Log:
    PR libstdc++/49204
        ...

Looking in the logs all new failures appear to be:

/mnt/work/objdir47/i686-pc-linux-gnu/./libstdc++-v3/src/.libs/libstdc++.so:
undefined reference to `std::_Bind_simple_helper<void
(std::thread::*)()<std::reference_wrapper<std::thread> > >::__type
std::__bind_simple<void (std::thread::*)(), std::reference_wrapper<std::thread>
>(void (std::thread::*&&)(), std::reference_wrapper<std::thread>&&)'
collect2: error: ld returned 1 exit status
compiler exited with status 1