[Bug c++/33161] New: Undefined symbols at link for referenced static const data member

["sylvain dot pion at sophia dot inria dot fr" <gcc-bugzilla at gcc dot gnu dot org>]

Compiling the following program, with "g++ A.cpp" fails to link
with the following error message :
/tmp/ccehheUK.o:(.rodata+0x0): undefined reference to `A::x'
collect2: ld returned 1 exit status

------------------------ 
struct A {
  static const int x = 0;
};

const int & i = A::x;

int main() {}
------------------------

It can be reproduced with g++ versions ranging from 3.2 to 4.3,
on Linux and Darwin.

Note that changing one "int" to "unsigned" makes it pass.

Is this really expected to fail ?


-- 
           Summary: Undefined symbols at link for referenced static const
                    data member
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: sylvain dot pion at sophia dot inria dot fr
  GCC host triplet: i386-redhat-linux


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33161