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From: "lts-rudolph at gmx dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/53304] New: use of std::future results to relocation error with symbol _ZTINSt13__future_base19_Async_state_commonE
Date: Thu, 10 May 2012 09:12:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53304

             Bug #: 53304
           Summary: use of std::future results to relocation error with
                    symbol _ZTINSt13__future_base19_Async_state_commonE
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: lts-rudolph@gmx.de


The example did not run if compiled with 4.7.0 but runs as expected with 4.6.3

Error:
krud@x:~/test/c++/c++11/thread_future_promise$ go
go: relocation error: go: symbol _ZTINSt13__future_base19_Async_state_commonE,
version GLIBCXX_3.4.17 not defined in file libstdc++.so.6 with link time
reference

comiled with

---- start makefile --------
all: go

#CXX=/opt/linux-gnu_4.6.3/bin/g++
CXX=/opt/linux-gnu_4.7.0/bin/g++
CXXFLAGS=-pthread -std=c++0x -O2 -g 
LDFLAGS=-pthread -g


go: main.o
    $(CXX) $< $(LDFLAGS) -o go

------- end Makefile --------

------- start main.cpp --------

#include <iostream>

#define _GLIBCXX_USE_NANOSLEEP
#include <thread>
#include <future>

using namespace std;

int main()
{
   future<int> retval= async( [] { this_thread::sleep_for( chrono::seconds(1));
return 42; } );

    cout << "Result " << retval.get() << endl;

    return 0;
}
------ end main.cpp -----------