[Bug c++/64954] New: GCC incorrectly rejects constexpr variable initialization.

[ytj000 at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64954

            Bug ID: 64954
           Summary: GCC incorrectly rejects constexpr variable
                    initialization.
           Product: gcc
           Version: 5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: ytj000 at gmail dot com

struct A {};
int main() {
    A a;
    constexpr A b = a;
}

Compiles with clang++ 3.7.0 (trunk 228104). FYI
http://llvm.org/bugs/show_bug.cgi?id=22474