[Bug c++/19664] New: -fvisibility-inlines-hidden fails with gcc's extern template extension on amd64

["andreas dot pokorny at gmx dot de" <gcc-bugzilla at gcc dot gnu dot org>]

Failing code:
template<typename CharT>
struct VisTest
{
  inline VisTest ();
};
template<typename CharT>
inline VisTest<CharT>::VisTest()
{}
extern template class VisTest<char>;  // It works if we drop that line
int some_function( int do_something ) __attribute__ ((visibility("default")));
int some_function( int do_something )
{
  VisTest<char> a;
  return 0;
}

g++ -fPIC -fvisibility=hidden -fvisibility-inlines-hidden lib.cpp -c
g++ -shared -fPIC  -fvisibility=hidden -fvisibility-inlines-hidden lib.o -o
liblib.so

/usr/lib/gcc/x86_64-pc-linux-gnu/4.0.0/../../../../x86_64-pc-linux-gnu/bin/ld:
lib.o: relocation R_X86_64_PC32 against `VisTest<char>::VisTest()' can not be
used when making a shared object; recompile with -fPIC
/usr/lib/gcc/x86_64-pc-linux-gnu/4.0.0/../../../../x86_64-pc-linux-gnu/bin/ld:
final link failed: Bad value
collect2: ld returned 1 exit status

This happens with nearly all cases in which libstdc++ headers are involved:
http://bugs.gentoo.org/show_bug.cgi?id=78720
http://groups.google.de/groups?q=relocation+R_X86_64_PC32+against+making+a+shared+object&hl=de&lr=&selm=ct12kj%242njo%241%40FreeBSD.csie.NCTU.edu.tw&rnum=2

-- 
           Summary: -fvisibility-inlines-hidden fails with gcc's extern
                    template extension on amd64
           Product: gcc
           Version: 4.0.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: andreas dot pokorny at gmx dot de
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: x86_64-pc-linux-gnu
  GCC host triplet: x86_64-pc-linux-gnu
GCC target triplet: x86_64-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19664