[Bug c++/56835] New: std::promise seems broken on 10.8 lion

["verdagon at gmail dot com" <gcc-bugzilla@gcc.gnu.org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56835

             Bug #: 56835
           Summary: std::promise seems broken on 10.8 lion
    Classification: Unclassified
           Product: gcc
           Version: 4.8.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: verdagon@gmail.com


Hi all, the following code crashes on 10.8 lion.

#include <future>
#include <iostream>

int main() {
   std::cout << "doing the test" << std::endl;
   std::promise<bool> mypromise;
   std::future<bool> myfuture = mypromise.get_future();
   mypromise.set_value(true);
   bool result = myfuture.get();
   std::cout << "success, result is " << result << std::endl;
   return 0;
}

with this output:

$ g++-mp-4.8 -std=c++11 test.cpp
$ ./a.out
doing the test
Segmentation fault: 11
$ 

more info:
gcc version 4.8.0 20130310 (experimental) (MacPorts gcc48 4.8-20130310_0) 
I'm on a Mac OS 10.8 (mountain lion)
compiled with: g++-mp-4.8 -std=c++11 test.cpp
(though I've tried with -lpthread and -pthread and they also crashed)
No compiler output, compiled just fine.

(see
http://stackoverflow.com/questions/15778085/is-stdpromise-broken-on-my-machine-using-g-mp?noredirect=1#comment22437010_15778085
for some runs on other machines)