gcc 3.0 missing __dso_handle in libstdc++

[Artem Khodush]

Andi Kleen wrote:
> 
> I guess it's caused by the following in crtstuff.o:
> 
> /* Declare the __dso_handle variable.  It should have a unique value
>    in every shared-object; in a main program its value is zero.  The
>    object should in any case be protected.  This means the instance
>    in one DSO or the main program is not used in another object.  The
>    dynamic linker takes care of this.  */
> 
> /* XXX Ideally the following should be implemented using
>        __attribute__ ((__visibility__ ("hidden")))
>    but the __attribute__ support is not yet there.  */
> #ifdef HAVE_GAS_HIDDEN
> asm (".hidden\t__dso_handle");
> #endif
> 
> #ifdef CRTSTUFFS_O
> void *__dso_handle = &__dso_handle;
> #else
> void *__dso_handle = 0;
> #endif
> 
> but seems that doesn't work properly in glibc 2.1 and binutils 2.9.5.0 (hj lu versions I think)
> It may be a dynamic linker bug?
> 

FWIW, I vaguely remember this problem was discussed earlier on some of the
gcc mailing lists, the outcome was that there is a bug in some specific versions of
binutils.