From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugs-return-407775-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 17369 invoked by alias); 26 Nov 2012 19:45:08 -0000
Received: (qmail 17137 invoked by uid 48); 26 Nov 2012 19:44:52 -0000
From: "walker_643 at yahoo dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/55472] New: Linker cannot find lambda symbol
Date: Mon, 26 Nov 2012 19:45:00 -0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: new
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: c++
X-Bugzilla-Keywords:
X-Bugzilla-Severity: normal
X-Bugzilla-Who: walker_643 at yahoo dot com
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-55472-4@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: 2012-11/txt/msg02437.txt.bz2


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55472

             Bug #: 55472
           Summary: Linker cannot find lambda symbol
    Classification: Unclassified
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: walker_643@yahoo.com


Created attachment 28781
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28781
Test Case

gcc -v:

Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu/Linaro
4.7.2-4precise1' --with-bugurl=file:///usr/share/doc/gcc-4.7/README.Bugs
--enable-languages=c,c++,go,fortran,objc,obj-c++ --prefix=/usr
--program-suffix=-4.7 --enable-shared --enable-linker-build-id
--with-system-zlib --libexecdir=/usr/lib --without-included-gettext
--enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.7
--libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu
--enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-gnu-unique-object
--enable-plugin --enable-objc-gc --disable-werror --with-arch-32=i686
--with-tune=generic --enable-checking=release --build=x86_64-linux-gnu
--host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix
gcc version 4.7.2 (Ubuntu/Linaro 4.7.2-4precise1) 


build command:  g++ -Wall -Wextra -std=c++11 -o lambda lambda.cpp


linker output:
/tmp/ccbAcPGU.o: In function `Foo::Foo(std::function<void
()>)::{lambda(Foo*)#1}::operator void (*)(Foo*)() const':
lambda.cpp:(.text._ZZN3FooC1ESt8functionIFvvEEENKUlPS_E_cvPFvS3_EEv[_ZZN3FooC1ESt8functionIFvvEEENKUlPS_E_cvPFvS3_EEv]+0x9):
undefined reference to `Foo::Foo(std::function<void
()>)::{lambda(Foo*)#1}::_FUN(Foo*)'
collect2: error: ld returned 1 exit status