Created attachment 28154 [details]
output of g++ -v

The following code triggers a segfault.

struct reg {
    template <typename CLS, typename T>
    constexpr reg(T CLS::*) {}
};

struct foo {
};

struct bar {
    foo a;

    // both of these trigger internal error
    static constexpr foo bar::*reg_a = &bar::a;
    static constexpr reg reg_a = &bar::a;
};

g++ --version
g++ (Debian 4.7.1-7) 4.7.1
Copyright (C) 2012 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

4.6 seems to have the same problem.