initializer_list and GCC 4.9.2 vs GCC trunk

The following is a stripped-down version of the problem:

#include <initializer_list>
#include <iostream>

enum objects { zero, one, two, three, four, five, six, seven };

std::initializer_list<objects> objects_list()
{
    return { zero, one, two, three, four, five, six, seven };
}

int main()
{
    for (auto a : objects_list())
    {
        std::cout << a << ' ';
    }
    std::cout << '\n';
}

My expectation is that the programs outputs:

0 1 2 3 4 5 6 7

which is comfirmed by GCC 4.9.2, but a GCC fresh from its git repository yields:

0 0 -85997960 32712 -1076836160 32765 0 32

which seem basically random numbers.

Is there a problem with my program or with GCC?