[Bug c++/53304] New: use of std::future results to relocation error with symbol _ZTINSt13__future_base19_Async_state_commonE

[Bug c++/53304] New: use of std::future results to relocation error with symbol _ZTINSt13__future_base19_Async_state_commonE

[lts-rudolph at gmx dot de]

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 -----------

[Bug c++/53304] use of std::future results to relocation error with symbol _ZTINSt13__future_base19_Async_state_commonE

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53304

--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-05-10 14:39:15 UTC ---
http://gcc.gnu.org/onlinedocs/libstdc++/faq.html#faq.how_to_set_paths

You need to tell the dynamic linker how to find the 4.7 libs

[Bug c++/53304] use of std::future results to relocation error with symbol _ZTINSt13__future_base19_Async_state_commonE

[lts-rudolph at gmx dot de]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53304

Klaus Rudolph <lts-rudolph at gmx dot de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |INVALID

--- Comment #2 from Klaus Rudolph <lts-rudolph at gmx dot de> 2012-05-10 14:57:07 UTC ---
> You need to tell the dynamic linker how to find the 4.7 libs

You are right. ld.so.config points to older build of pre-release version of gcc
4.7. Status could be changed to invalid.