protect __dso_handle

[Mark Mitchell]

>>>>> "Ulrich" == Ulrich Drepper <drepper@redhat.com> writes:

    Ulrich> This works mostly for C functions but can easily go wrong
    Ulrich> for these pseudo ops.  If you take a look at all the
    Ulrich> different assemblers you'll see a multitude of pseudo ops
    Ulrich> and I will almost bet there is a .hidden somewhere.  With
    Ulrich> C tests you have prototypes etc to make sure you get the
    Ulrich> right function, with pseudo ops you can go wrong easily.

I thought that maybe this was what you were getting at.

    >> But, I think the chances of another assembler accepting this
    >> syntax, but having different semantics for it, are slim.

    Ulrich> I don't think so.  

OK, I'll trust your judgement.

    Ulrich> The syntax used is so common since
    Ulrich> there is not so much room for variation.  Besides, if you
    Ulrich> take a look at the configure.in file you'll see that the
    Ulrich> tests are currently only run for gas.

I did look -- but I didn't see that.  All I saw is that the test is
run if gcc_cv_as is set, and that appeared to be set if (for example)
`$AS' is set in the environment.  But, if you say the tests are only
run for `gas' I'll believe you.  I would appreciate it if you would
confirm this -- you don't need to convince me, but I would like to
that know you're sure.

Given that you've checked that, the patch is fine.

Thanks,

--
Mark Mitchell                   mark@codesourcery.com
CodeSourcery, LLC               http://www.codesourcery.com